Orange-red KLa(WO4)2 phosphors co-doped with Sm3+-Gd3+ were synthesized via high-temperature solid-state reaction. Phase purity and crystal structure were confirmed by XRD, while SEM revealed non-uniform particle distribution. XPS verified elemental composition and suggested the chemical states of dopants. Under 403 nm excitation, KLa(WO4)2: Sm3+ exhibited intense orange–red emissions, dominated by the 4G5/2 - 6Hᵢ (i = 5/2, 7/2, 9/2, 11/2) transition from 500 to 750 nm. Substitution by Gd3+ lowers the local symmetry, as evidenced by the increased asymmetry ratio, resulting in a 1.88-fold increase in emission intensity. Notably, the optimized phosphor, KLa0.8Gd0.15(WO4)2:0.05Sm3+, exhibits a high color purity (CP) of 99 % and excellent thermal stability retaining 85 % of its room-temperature emission intensity at 423K. When combined with a 405 nm InGaN chip, the fabricated LED displayed strong spectral overlap with chlorophyll and phytochrome absorption peaks, confirming its potential for plant-growth illumination.
{"title":"Sm3+ -activated KLa(WO4)2 phosphors with Gd3+ Co-doping: Orange-Red emission and thermal stability toward potential plant lighting applications","authors":"Lanwei Qiu , Haochang Ye , Guangting Xiong , Wei Zhang , Yirong Huang , Qiuzhi Liang , Canhui Pan , Jinquan Chen , Zuyong Feng","doi":"10.1016/j.jssc.2025.125784","DOIUrl":"10.1016/j.jssc.2025.125784","url":null,"abstract":"<div><div>Orange-red KLa(WO<sub>4</sub>)<sub>2</sub> phosphors co-doped with Sm<sup>3+</sup>-Gd<sup>3+</sup> were synthesized via high-temperature solid-state reaction. Phase purity and crystal structure were confirmed by XRD, while SEM revealed non-uniform particle distribution. XPS verified elemental composition and suggested the chemical states of dopants. Under 403 nm excitation, KLa(WO<sub>4</sub>)<sub>2</sub>: Sm<sup>3+</sup> exhibited intense orange–red emissions, dominated by the <sup>4</sup>G<sub>5/2</sub> - <sup>6</sup>Hᵢ (i = 5/2, 7/2, 9/2, 11/2) transition from 500 to 750 nm. Substitution by Gd<sup>3+</sup> lowers the local symmetry, as evidenced by the increased asymmetry ratio, resulting in a 1.88-fold increase in emission intensity. Notably, the optimized phosphor, KLa<sub>0.8</sub>Gd<sub>0.15</sub>(WO<sub>4</sub>)<sub>2</sub>:0.05Sm<sup>3+</sup>, exhibits a high color purity (CP) of 99 % and excellent thermal stability retaining 85 % of its room-temperature emission intensity at 423K. When combined with a 405 nm InGaN chip, the fabricated LED displayed strong spectral overlap with chlorophyll and phytochrome absorption peaks, confirming its potential for plant-growth illumination.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125784"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-22DOI: 10.1016/j.jssc.2025.125789
Fadhil F. Sead , Rafid Kamal Jameel , Ahmed Aldulaimi , Rekha M M , Subhashree Ray , Kattela Chennakesavulu , Renu Sharma , Aashna Sinha , Rafid Jihad Albadr , Mariem Alwan , Aseel Smerat
The rational design of multi-component heterostructures is an effective route to overcome the limitations of pristine metal–organic frameworks (MOFs) in photocatalytic hydrogen evolution. In this work, a naphthalene-functionalized UiO-67 MOF was integrated with graphene oxide (GO) through a one-pot solvothermal method to obtain a UiO-67-naph/GO hybrid photocatalyst. This study introduces a dual-modification strategy that simultaneously tunes the electronic structure of UiO-67 at the molecular level via π-extended naphthalene linkers and enhances interfacial charge transport through conductive GO sheets—representing the first synergistic design of its kind for UiO-based hydrogen evolution systems. Structural analyses confirmed that GO incorporation preserved MOF crystallinity while enhancing conductivity and interfacial charge transport. Optical and photoelectrochemical studies demonstrated extended visible-light absorption, reduced photoluminescence, lower charge-transfer resistance, and stronger photocurrent compared to pristine UiO-67-naph. Under visible-light irradiation (λ > 420 nm), UiO-67-naph/GO achieved a hydrogen evolution rate of 2897.6 μmol g−1 h−1 and the total hydrogen produced (347.7 μmol) over 4 h, far exceeding UiO-67-naph, UiO-67-NH2, and GO alone. Operational studies revealed maximum performance near neutral pH, at an optimal catalyst dosage of ∼30 mg, and temperatures of 25–30 °C. The composite also exhibited excellent stability and reusability. Mechanistic investigations supported a direct Z-scheme heterojunction, where recombination of intermediate carriers preserved highly reducing electrons on GO (−0.9 V) and oxidizing holes on UiO-67-naph (+1.8 V), ensuring strong redox potentials and efficient charge separation. This work highlights the synergistic role of π-conjugated linkers and GO in tailoring MOF-based photocatalysts for sustainable solar hydrogen production.
{"title":"Dual modification of UiO-67 by graphene oxide and naphthalene: A synergistic strategy toward efficient photocatalytic hydrogen evolution","authors":"Fadhil F. Sead , Rafid Kamal Jameel , Ahmed Aldulaimi , Rekha M M , Subhashree Ray , Kattela Chennakesavulu , Renu Sharma , Aashna Sinha , Rafid Jihad Albadr , Mariem Alwan , Aseel Smerat","doi":"10.1016/j.jssc.2025.125789","DOIUrl":"10.1016/j.jssc.2025.125789","url":null,"abstract":"<div><div>The rational design of multi-component heterostructures is an effective route to overcome the limitations of pristine metal–organic frameworks (MOFs) in photocatalytic hydrogen evolution. In this work, a naphthalene-functionalized UiO-67 MOF was integrated with graphene oxide (GO) through a one-pot solvothermal method to obtain a UiO-67-naph/GO hybrid photocatalyst. This study introduces a dual-modification strategy that simultaneously tunes the electronic structure of UiO-67 at the molecular level via π-extended naphthalene linkers and enhances interfacial charge transport through conductive GO sheets—representing the first synergistic design of its kind for UiO-based hydrogen evolution systems. Structural analyses confirmed that GO incorporation preserved MOF crystallinity while enhancing conductivity and interfacial charge transport. Optical and photoelectrochemical studies demonstrated extended visible-light absorption, reduced photoluminescence, lower charge-transfer resistance, and stronger photocurrent compared to pristine UiO-67-naph. Under visible-light irradiation (λ > 420 nm), UiO-67-naph/GO achieved a hydrogen evolution rate of 2897.6 μmol g<sup>−1</sup> h<sup>−1</sup> and the total hydrogen produced (347.7 μmol) over 4 h, far exceeding UiO-67-naph, UiO-67-NH<sub>2</sub>, and GO alone. Operational studies revealed maximum performance near neutral pH, at an optimal catalyst dosage of ∼30 mg, and temperatures of 25–30 °C. The composite also exhibited excellent stability and reusability. Mechanistic investigations supported a direct Z-scheme heterojunction, where recombination of intermediate carriers preserved highly reducing electrons on GO (−0.9 V) and oxidizing holes on UiO-67-naph (+1.8 V), ensuring strong redox potentials and efficient charge separation. This work highlights the synergistic role of π-conjugated linkers and GO in tailoring MOF-based photocatalysts for sustainable solar hydrogen production.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125789"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Enhancing the gas barrier performance of polyurethane (PU) via functional additives has garnered growing interest to expand its application scope. Herein, we synthesized a series of micron-sized Mg2Al-layered double hydroxides (LDHs) via hydrothermal method by varying Mg2+ concentrations (denoted as 0.1-, 0.4-, 0.6-, 0.8-, and 1.0-LDH). Subsequently, LDH/PU composite films were fabricated by dispersing Mg2Al-LDH into the PU matrix using a solvent mixing approach. Comprehensive characterization of crystalline structure, morphology, gas barrier performance, thermal stability, and mechanical properties was conducted. Results revealed high dispersion of LDH fillers within the PU matrix without adverse effects on PU crystallization. Among them, notably, 0.2-LDH/PU composites exhibited significantly enhanced gas barrier properties compared to neat PU, with a 5 wt% loading of 0.2-LDH identified as optimal for superior barrier performance. The improved gas barrier performance stems from hydrogen bonding interactions between LDH hydroxyl groups and PU amino groups, which enhance filler-polymer compatibility and suppress PU hard segment mobility. Additionally, LDH incorporation effectively reinforced the thermal stability and mechanical properties of the composites. These findings highlight micron-sized LDHs as promising functional additives, paving the way for future development of high-performance PU with tailored gas barrier capabilities.
{"title":"Layered double hydroxide/polyurethane composites: Influence of micron-sized LDH on the gas barrier properties of polyurethane","authors":"Menghua Zhao , Qian Zhang , Yinghan Guo , Yalin Shi , Weiliang Tian , Yongjun Feng","doi":"10.1016/j.jssc.2025.125801","DOIUrl":"10.1016/j.jssc.2025.125801","url":null,"abstract":"<div><div>Enhancing the gas barrier performance of polyurethane (PU) via functional additives has garnered growing interest to expand its application scope. Herein, we synthesized a series of micron-sized Mg<sub>2</sub>Al-layered double hydroxides (LDHs) via hydrothermal method by varying Mg<sup>2+</sup> concentrations (denoted as 0.1-, 0.4-, 0.6-, 0.8-, and 1.0-LDH). Subsequently, LDH/PU composite films were fabricated by dispersing Mg<sub>2</sub>Al-LDH into the PU matrix using a solvent mixing approach. Comprehensive characterization of crystalline structure, morphology, gas barrier performance, thermal stability, and mechanical properties was conducted. Results revealed high dispersion of LDH fillers within the PU matrix without adverse effects on PU crystallization. Among them, notably, 0.2-LDH/PU composites exhibited significantly enhanced gas barrier properties compared to neat PU, with a 5 wt% loading of 0.2-LDH identified as optimal for superior barrier performance. The improved gas barrier performance stems from hydrogen bonding interactions between LDH hydroxyl groups and PU amino groups, which enhance filler-polymer compatibility and suppress PU hard segment mobility. Additionally, LDH incorporation effectively reinforced the thermal stability and mechanical properties of the composites. These findings highlight micron-sized LDHs as promising functional additives, paving the way for future development of high-performance PU with tailored gas barrier capabilities.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125801"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-29DOI: 10.1016/j.jssc.2025.125803
Tian-Jiao Jiang , Yu-Nan Cui , Li Liu , Shibao Tang , Peng-Fei Wang , Yu-Hang Zhang , Gang Yang , Fa-Nian Shi
Metal-organic framework materials (MOFs) are an emerging coordination polymer in recent years, and metal ions can form a three-dimensional porous structure by self-assembly with organic ligands, so MOFs usually have a large specific surface area and good structural controllability. The simple synthesis method makes the preparation of TMOs anode materials by MOF a feasible and promising material development route. In this study, three Fe–Cu-MOF precursors were prepared by solvothermal method, and the nanocomposites of 3Fe2O3/CuO, 5Fe2O3/CuO and 10Fe2O3/CuO were synthesized by calcination of the as-prepared Fe–Cu-MOFs. The CuO layer with incomplete surface encapsulation provides a fast electron/ion transport channel. The experimental results showed that under the optimal doping ratio, the 5Fe2O3/CuO composites showed excellent electrochemical properties, with a reversible capacity at 0.1A/g up to 1417.06 mAh g-1 (after 145 cycles), which was much higher than those of 3Fe2O3/CuO(602.38 mAh g-1)and 10Fe2O3/CuO (987.43 mAh g-1), respectively. Importantly, at a high current density of 1A/g, it can remain at 551.16 mAh g-1 after 800 cycles, effectively alleviating the volume expansion problem of Fe2O3 materials during the charging and discharging process. Fe–Cu-MOF-derived 5Fe2O3/CuO nanocomposites are expected to become ideal for high-performance lithium-ion battery anode materials due to their excellent electrochemical properties and broad application prospects.
金属-有机框架材料（MOFs）是近年来新兴的配位聚合物，金属离子与有机配体自组装形成三维多孔结构，因此MOFs通常具有较大的比表面积和良好的结构可控性。简单的合成方法使MOF制备TMOs负极材料成为一条可行且有前景的材料发展路线。本研究采用溶剂热法制备了3种Fe-Cu-MOF前驱体，并对制备的Fe-Cu-MOF进行煅烧，合成了3Fe2O3/CuO、5Fe2O3/CuO和10Fe2O3/CuO纳米复合材料。表面不完全封装的CuO层提供了一个快速的电子/离子传输通道。实验结果表明，在最佳掺杂比例下，5Fe2O3/CuO复合材料表现出优异的电化学性能，在0.1A/g下可逆容量高达1417.06 mAh g-1（循环145次），远高于3Fe2O3/CuO（602.38 mAh g-1）和10Fe2O3/CuO （987.43 mAh g-1）。重要的是，在1A/g的高电流密度下，800次循环后仍能保持在551.16 mAh g-1，有效缓解了Fe2O3材料在充放电过程中的体积膨胀问题。fe - cu - mof衍生的5Fe2O3/CuO纳米复合材料具有优异的电化学性能和广阔的应用前景，有望成为高性能锂离子电池负极材料的理想选择。
{"title":"MOF-derived Fe2O3/CuO nanocomposites as anode materials for high-performance lithium-ion batteries","authors":"Tian-Jiao Jiang , Yu-Nan Cui , Li Liu , Shibao Tang , Peng-Fei Wang , Yu-Hang Zhang , Gang Yang , Fa-Nian Shi","doi":"10.1016/j.jssc.2025.125803","DOIUrl":"10.1016/j.jssc.2025.125803","url":null,"abstract":"<div><div>Metal-organic framework materials (MOFs) are an emerging coordination polymer in recent years, and metal ions can form a three-dimensional porous structure by self-assembly with organic ligands, so MOFs usually have a large specific surface area and good structural controllability. The simple synthesis method makes the preparation of TMOs anode materials by MOF a feasible and promising material development route. In this study, three Fe–Cu-MOF precursors were prepared by solvothermal method, and the nanocomposites of 3Fe<sub>2</sub>O<sub>3</sub>/CuO, 5Fe<sub>2</sub>O<sub>3</sub>/CuO and 10Fe<sub>2</sub>O<sub>3</sub>/CuO were synthesized by calcination of the as-prepared Fe–Cu-MOFs. The CuO layer with incomplete surface encapsulation provides a fast electron/ion transport channel. The experimental results showed that under the optimal doping ratio, the 5Fe<sub>2</sub>O<sub>3</sub>/CuO composites showed excellent electrochemical properties, with a reversible capacity at 0.1A/g up to 1417.06 mAh g<sup>-1</sup> (after 145 cycles), which was much higher than those of 3Fe<sub>2</sub>O<sub>3</sub>/CuO(602.38 mAh g<sup>-1</sup>)and 10Fe<sub>2</sub>O<sub>3</sub>/CuO (987.43 mAh g<sup>-1</sup>), respectively. Importantly, at a high current density of 1A/g, it can remain at 551.16 mAh g<sup>-1</sup> after 800 cycles, effectively alleviating the volume expansion problem of Fe<sub>2</sub>O<sub>3</sub> materials during the charging and discharging process. Fe–Cu-MOF-derived 5Fe<sub>2</sub>O<sub>3</sub>/CuO nanocomposites are expected to become ideal for high-performance lithium-ion battery anode materials due to their excellent electrochemical properties and broad application prospects.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125803"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-27DOI: 10.1016/j.jssc.2025.125800
Xiaoxuan Min , Ru Xiao , Bo Zhang , Bingyan Shi , Jingyu Gao , Xinyu Sun , Zitong Wu , Aiman Li , Yishan Wang , Ying Deng
The construction of highly efficient pH-universal hydrogen evolution reaction (HER) electrocatalysts remains a significant challenge in hydrogen production via water electrolysis. Herein, we report a self-supported CoRu alloy@nitrogen-doped porous carbon/carbon cloth (Co10Ru@CN/CC) electrode fabricated through a two-step protocol combining room-temperature active ions trapping and in-situ calcination. The in-situ carbonthermal reduction can effectively supress the aggregation of CoRu alloy nanoparticles and produce abundant lattice defects for highly active reaction sites, as well as the involved N element can enhance the coupled effect between metal speices and carbon matrix for promoted durability and charge transfer. Notably, CoRu@CN/CC achieves exceptional HER performance with overpotentials of only 175 and 426 mV in acidic and alkaline media at 200 mA cm−2, respectively. More importantly, it maintains stable operation for 100 h in acidic solution at 100 mA cm−2 with negligible activity decay. This work presents a scalable strategy for designing pH-universal self-supported HER platinum-like electrode, advancing the feasibility of green hydrogen economy.
高效的ph -通用析氢反应（HER）电催化剂的构建仍然是水电解制氢领域的一个重大挑战。在此，我们报告了一种自支撑CoRu alloy@nitrogen-doped多孔碳/碳布（Co10Ru@CN/CC）电极，通过结合室温活性离子捕获和原位煅烧的两步工艺制备。原位碳热还原可以有效抑制CoRu合金纳米颗粒的聚集，在高活性反应位点产生丰富的晶格缺陷，并且所涉及的N元素可以增强金属种与碳基体之间的耦合效应，从而提高耐久性和电荷转移。值得注意的是，CoRu@CN/CC在200 mA cm - 2的酸性和碱性介质中分别获得了175和426 mV的过电位，具有优异的HER性能。更重要的是，它在100 mA cm−2的酸性溶液中保持100小时的稳定运行，活性衰减可以忽略不计。本文提出了一种可扩展的设计ph通用型自支撑HER类铂电极的策略，提高了绿色氢经济的可行性。
{"title":"Nitrogen-doped carbon-supported CoRu nanoalloys for enhanced pH-universal hydrogen evolution","authors":"Xiaoxuan Min , Ru Xiao , Bo Zhang , Bingyan Shi , Jingyu Gao , Xinyu Sun , Zitong Wu , Aiman Li , Yishan Wang , Ying Deng","doi":"10.1016/j.jssc.2025.125800","DOIUrl":"10.1016/j.jssc.2025.125800","url":null,"abstract":"<div><div>The construction of highly efficient pH-universal hydrogen evolution reaction (HER) electrocatalysts remains a significant challenge in hydrogen production <em>via</em> water electrolysis. Herein, we report a self-supported CoRu alloy@nitrogen-doped porous carbon/carbon cloth (Co<sub>10</sub>Ru@CN/CC) electrode fabricated through a two-step protocol combining room-temperature active ions trapping and <em>in-situ</em> calcination. The <em>in-situ</em> carbonthermal reduction can effectively supress the aggregation of CoRu alloy nanoparticles and produce abundant lattice defects for highly active reaction sites, as well as the involved N element can enhance the coupled effect between metal speices and carbon matrix for promoted durability and charge transfer. Notably, CoRu@CN/CC achieves exceptional HER performance with overpotentials of only 175 and 426 mV in acidic and alkaline media at 200 mA cm<sup>−2</sup>, respectively. More importantly, it maintains stable operation for 100 h in acidic solution at 100 mA cm<sup>−2</sup> with negligible activity decay. This work presents a scalable strategy for designing pH-universal self-supported HER platinum-like electrode, advancing the feasibility of green hydrogen economy.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125800"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-22DOI: 10.1016/j.jssc.2025.125793
Le Chen , Wen-Qing Zhang , Lin Nie , Jian-Jun Yin , Qun Chen , Pengxiang Qiu , Ming-Yang He , Zhi-Hui Zhang
Metal-organic aerogels derived from ZIF-8 frameworks were developed for xylene isomer separation, demonstrating unique structural and adsorptive properties. The incorporation of ZIF-8 transformed non-porous agar (AG) aerogel into a hierarchically porous composite, albeit with a reduced surface area compared to pure MOFs. Vapor-phase adsorption and breakthrough experiments revealed exceptional p-xylene selectivity (pX/oX = 19) in ZIF-8/AG composites, though with diminished adsorption capacity relative to pristine ZIF-8. While exhibiting substantial liquid-phase adsorption, the composite showed limited gas-phase selectivity, indicating hydrogen-bonding-mediated adsorption mechanisms. This work highlights the correlation between selectivity and capacity in MOF-based aerogel adsorbents for the separation of aromatics.
{"title":"Hierarchically porous ZIF-8 aerogel composites for selective adsorption and separation of xylene isomers","authors":"Le Chen , Wen-Qing Zhang , Lin Nie , Jian-Jun Yin , Qun Chen , Pengxiang Qiu , Ming-Yang He , Zhi-Hui Zhang","doi":"10.1016/j.jssc.2025.125793","DOIUrl":"10.1016/j.jssc.2025.125793","url":null,"abstract":"<div><div>Metal-organic aerogels derived from ZIF-8 frameworks were developed for xylene isomer separation, demonstrating unique structural and adsorptive properties. The incorporation of ZIF-8 transformed non-porous agar (AG) aerogel into a hierarchically porous composite, albeit with a reduced surface area compared to pure MOFs. Vapor-phase adsorption and breakthrough experiments revealed exceptional <em>p</em>-xylene selectivity (<em>p</em>X/<em>o</em>X = 19) in ZIF-8/AG composites, though with diminished adsorption capacity relative to pristine ZIF-8. While exhibiting substantial liquid-phase adsorption, the composite showed limited gas-phase selectivity, indicating hydrogen-bonding-mediated adsorption mechanisms. This work highlights the correlation between selectivity and capacity in MOF-based aerogel adsorbents for the separation of aromatics.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125793"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-11-29DOI: 10.1016/j.jssc.2025.125758
Wangchao Su , Yuhang Gao , Lijun Nie , Yueyu Ma , Xiaobei Han , Lirong Ren , Jianhui Shi
Bismuth iodide oxide/boron-doped graphitic carbon nitride (BiOI/BCN) with a type II heterojunction structure was rationally designed and controllably synthesized using calcination and hydrothermal methods. The loading of BCN can be adjusted to effectively regulate both the electronic band structure and photocatalytic performance of the BiOI/BCN heterojunction. Under simulated sunlight irradiation and without adding an additional sacrificial agent, the BiOI/BCN-1 composite with the optimal doping ratio demonstrated exceptional photocatalytic performance. It completely reduced Cr(VI) within 40 min, with a reaction rate constant of 0.1283 min−1, which was 5.7 times that of pristine BCN and 1.27 times that of BiOI. The superior photocatalytic performance of BiOI/BCN-1 is attributed to its enhanced visible-light absorption, larger specific surface area, increased active sites, and efficient separation of photogenerated carriers, all of which are facilitated by the Type II heterojunction. Recycling tests confirmed that BiOI/BCN-1 maintains high activity even after five cycles. Furthermore, radical trapping experiments confirmed that and are the dominant active species responsible for the photocatalytic reduction of Cr(VI). This study establishes a strategic method for designing and synthesizing highly efficient Type II heterojunction photocatalysts, providing an effective approach for the photocatalytic reduction of heavy metal ions in wastewater.
{"title":"Synergistic strategy and mechanistic elucidation of efficient Cr(VI) photoreduction by heterojunction BiOI/B-g-C3N4 hybrids","authors":"Wangchao Su , Yuhang Gao , Lijun Nie , Yueyu Ma , Xiaobei Han , Lirong Ren , Jianhui Shi","doi":"10.1016/j.jssc.2025.125758","DOIUrl":"10.1016/j.jssc.2025.125758","url":null,"abstract":"<div><div>Bismuth iodide oxide/boron-doped graphitic carbon nitride (BiOI/BCN) with a type II heterojunction structure was rationally designed and controllably synthesized using calcination and hydrothermal methods. The loading of BCN can be adjusted to effectively regulate both the electronic band structure and photocatalytic performance of the BiOI/BCN heterojunction. Under simulated sunlight irradiation and without adding an additional sacrificial agent, the BiOI/BCN-1 composite with the optimal doping ratio demonstrated exceptional photocatalytic performance. It completely reduced Cr(VI) within 40 min, with a reaction rate constant of 0.1283 min<sup>−1</sup>, which was 5.7 times that of pristine BCN and 1.27 times that of BiOI. The superior photocatalytic performance of BiOI/BCN-1 is attributed to its enhanced visible-light absorption, larger specific surface area, increased active sites, and efficient separation of photogenerated carriers, all of which are facilitated by the Type II heterojunction. Recycling tests confirmed that BiOI/BCN-1 maintains high activity even after five cycles. Furthermore, radical trapping experiments confirmed that <span><math><mrow><msup><mi>e</mi><mo>−</mo></msup></mrow></math></span> and <span><math><mrow><mo>·</mo><msubsup><mi>O</mi><mn>2</mn><mo>−</mo></msubsup></mrow></math></span> are the dominant active species responsible for the photocatalytic reduction of Cr(VI). This study establishes a strategic method for designing and synthesizing highly efficient Type II heterojunction photocatalysts, providing an effective approach for the photocatalytic reduction of heavy metal ions in wastewater.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125758"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145645633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-11DOI: 10.1016/j.jssc.2025.125776
Jhao-Wei Su , Shunsuke Oka , Hiroya Sakurai , Takashi Mochiku , Yoshihiko Takano , Jiunn-Yuan Lin
SrFeOCl is a member of the Ruddlesden–Popper (RP) phase compounds with tetragonal symmetry, whereas BaFeOCl has a different crystal structure with cubic symmetry. To elucidate the phase relation between these compounds, we systematically investigated the solid-solution system (BaSr)FeOCl at various temperatures. The RP phase appears only above , and the phase boundary is almost independent of temperature. Below at 800 , the cubic phase exists as a single phase, whereas a mixed phase of RP and cubic structures appears between the two single-phase regions. The compositional range of the mixed phase narrows as the temperature increases. By contrast, the RP phase becomes significantly more stable over a wider composition range under high pressure; even for , the cubic structure transforms into the RP-type structure under 6 GPa. The RP-type BaFeOCl represents a new polymorph. We analyzed its crystal structure and discuss it in the context of the recently proposed criterion for the stability of the RP phase.
{"title":"Phase stability of Ruddlesden–Popper-type Sr3Fe2O5Cl2 with Ba substitution and discovery of a new high-pressure polymorph of Ba3Fe2O5Cl2","authors":"Jhao-Wei Su , Shunsuke Oka , Hiroya Sakurai , Takashi Mochiku , Yoshihiko Takano , Jiunn-Yuan Lin","doi":"10.1016/j.jssc.2025.125776","DOIUrl":"10.1016/j.jssc.2025.125776","url":null,"abstract":"<div><div>Sr<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>Fe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O<span><math><msub><mrow></mrow><mrow><mn>5</mn></mrow></msub></math></span>Cl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> is a member of the Ruddlesden–Popper (RP) phase compounds with tetragonal <span><math><mrow><mi>I</mi><mn>4</mn><mo>/</mo><mi>m</mi><mi>m</mi><mi>m</mi></mrow></math></span> symmetry, whereas Ba<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>Fe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O<span><math><msub><mrow></mrow><mrow><mn>5</mn></mrow></msub></math></span>Cl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> has a different crystal structure with cubic <span><math><mrow><mi>I</mi><msub><mrow><mn>2</mn></mrow><mrow><mn>1</mn></mrow></msub><mn>3</mn></mrow></math></span> symmetry. To elucidate the phase relation between these compounds, we systematically investigated the solid-solution system (Ba<span><math><msub><mrow></mrow><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub></math></span>Sr<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span>)<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>Fe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O<span><math><msub><mrow></mrow><mrow><mn>5</mn></mrow></msub></math></span>Cl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> at various temperatures. The RP phase appears only above <span><math><mrow><mi>x</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>9</mn></mrow></math></span>, and the phase boundary is almost independent of temperature. Below <span><math><mrow><mi>x</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>5</mn></mrow></math></span> at 800 <span><math><mrow><mo>°</mo><mi>C</mi></mrow></math></span>, the cubic phase exists as a single phase, whereas a mixed phase of RP and cubic structures appears between the two single-phase regions. The compositional range of the mixed phase narrows as the temperature increases. By contrast, the RP phase becomes significantly more stable over a wider composition range under high pressure; even for <span><math><mrow><mi>x</mi><mo>=</mo><mn>0</mn></mrow></math></span>, the cubic structure transforms into the RP-type structure under 6 GPa. The RP-type Ba<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>Fe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O<span><math><msub><mrow></mrow><mrow><mn>5</mn></mrow></msub></math></span>Cl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> represents a new polymorph. We analyzed its crystal structure and discuss it in the context of the recently proposed criterion for the stability of the RP phase.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125776"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-03DOI: 10.1016/j.jssc.2025.125759
Qingyun Yan, Zhongxiang Shi, Yingnan Dong, Jing Wang
Motivated by the need to exhance the versatility of rare-earth-doped phosphors for solid-state lighting, a series of Eu2+-doped BaAl12O19 (BAO: Eu) materials exhibiting narrow-band blue emission were synthesized via a high-temperature solid-state reaction. X-ray diffraction analysis confirmed that the synthesized phosphors crystallize in a pure hexagonal BaAl12O19 phase. Microscopic analysis revealed that the powder consists of uniformly sized microparticles with a hexagonal prism morphology. The BAO: Eu2+ phosphors exhibit strong absorption in the 325–410 nm, making them suitable for excitation by near-ultraviolet (NUV) LED chips. Upon excitation at 365 nm, these phosphors emit a narrow-band blue light centered at 445 nm. The emission intensity increases with Eu2+ ratio until a quenching threshold is reached at x > 0.28. Notably, the highly symmetric crystal structure of the BaAl12O19 host lattice imparts remarkable luminous thermal stability to the BAO: xEu2+ phosphors. Over the temperature range of 298–498 K, the emission intensity at 150 °C retains 91.1 % of its initial value at room temperature. Furthermore, this series of phosphors exhibits high color purity, reaching an optimal value of 99.69 % at a doping ratio of x = 0.28. To demonstrate a practical application beyond lighting, an advanced anti-counterfeiting ink was formulated by dispersing the phosphors into commercial ink. This ink produces a sharp imaging effect under UV light, enabling rapid information decryption and significantly enhancing anti-counterfeiting security. Finally, a prototype blue LED device was fabricated by combining the Ba0·72Al12O19: 0.28Eu2+ phosphor with a 365 nm near-UV chip. The device demonstrates a high color rendering index, excellent color consistency, and superior color reproduction, underscoring its significant potential in solid-state lighting applications. In conclusion, the BAO: xEu2+ phosphors, characterized by their narrow-band emission, exceptional luminous thermal stability, and high color purity, represent a highly promising blue-emitting material for near-UV-pumped white LEDs.
{"title":"Investigation of the luminescent properties of a narrow-band blue-emitting phosphor BaAl12O19: Eu2+/EuAl12O19 for WLED backlight displays","authors":"Qingyun Yan, Zhongxiang Shi, Yingnan Dong, Jing Wang","doi":"10.1016/j.jssc.2025.125759","DOIUrl":"10.1016/j.jssc.2025.125759","url":null,"abstract":"<div><div>Motivated by the need to exhance the versatility of rare-earth-doped phosphors for solid-state lighting, a series of Eu<sup>2+</sup>-doped BaAl<sub>12</sub>O<sub>19</sub> (BAO: Eu) materials exhibiting narrow-band blue emission were synthesized via a high-temperature solid-state reaction. X-ray diffraction analysis confirmed that the synthesized phosphors crystallize in a pure hexagonal BaAl<sub>12</sub>O<sub>19</sub> phase. Microscopic analysis revealed that the powder consists of uniformly sized microparticles with a hexagonal prism morphology. The BAO: Eu<sup>2+</sup> phosphors exhibit strong absorption in the 325–410 nm, making them suitable for excitation by near-ultraviolet (NUV) LED chips. Upon excitation at 365 nm, these phosphors emit a narrow-band blue light centered at 445 nm. The emission intensity increases with Eu<sup>2+</sup> ratio until a quenching threshold is reached at <em>x</em> > 0.28. Notably, the highly symmetric crystal structure of the BaAl<sub>12</sub>O<sub>19</sub> host lattice imparts remarkable luminous thermal stability to the BAO: <em>x</em>Eu<sup>2+</sup> phosphors. Over the temperature range of 298–498 K, the emission intensity at 150 °C retains 91.1 % of its initial value at room temperature. Furthermore, this series of phosphors exhibits high color purity, reaching an optimal value of 99.69 % at a doping ratio of <em>x</em> = 0.28. To demonstrate a practical application beyond lighting, an advanced anti-counterfeiting ink was formulated by dispersing the phosphors into commercial ink. This ink produces a sharp imaging effect under UV light, enabling rapid information decryption and significantly enhancing anti-counterfeiting security. Finally, a prototype blue LED device was fabricated by combining the Ba<sub>0</sub><sub>·</sub><sub>72</sub>Al<sub>12</sub>O<sub>19</sub>: 0.28Eu<sup>2+</sup> phosphor with a 365 nm near-UV chip. The device demonstrates a high color rendering index, excellent color consistency, and superior color reproduction, underscoring its significant potential in solid-state lighting applications. In conclusion, the BAO: <em>x</em>Eu<sup>2+</sup> phosphors, characterized by their narrow-band emission, exceptional luminous thermal stability, and high color purity, represent a highly promising blue-emitting material for near-UV-pumped white LEDs.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125759"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study presents a multifunctional MIL-125/Ti3C2Tx@SrTiO3 hybrid device, which was strategically designed to simultaneously boost effectiveness in energy storage systems and the hydrogen evolution reaction (HER). The strategic configuration of the titanium-based metal organic framework (MOF) MIL-125, due to its huge amount of electron donor configuration, the high electrical conductivity nature of 2D titanium carbide MXene (Ti3C2Tx) as electron transfer mediator, and perovskite strontium titanate (SrTiO3) enables a unique nanocomposite to provide multi-organic active sites, high electrical conductivity, and high electrochemically active surface area. The composite material demonstrated a specific capacity (Qs) of 260 C/g, an energy density (Ed) of 65.76 Wh/kg, and a power density (Pd) of 1250 W/kg, while retaining cycling stability over 1000 charge-discharge cycles. The electrochemical impedance spectroscopy (EIS) results also demonstrate a low charge transfer resistance of 42 Ω, indicating efficient ion and electron transport. The MIL-125/Ti3C2Tx@SrTiO3 exhibited significant HER overpotential and Tafel slope, indicating rapid hydrogen evolution kinetics and catalytic stability. MIL-125/Ti3C2Tx@SrTiO3 underscores bifunctional electrochemical performance, which confirms it as an advanced material platform for next-generation integrated energy storage and hydrogen generation technologies.
{"title":"Rational design of a metal–organic framework-based hybrid with titanium carbide and strontium titanate for high-performance energy storage","authors":"Muhammad Ashraf , M.W. Iqbal , Soumaya Gouadria , Manoj Kumar , Abhinav Kumar","doi":"10.1016/j.jssc.2025.125777","DOIUrl":"10.1016/j.jssc.2025.125777","url":null,"abstract":"<div><div>This study presents a multifunctional MIL-125/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>@SrTiO<sub>3</sub> hybrid device, which was strategically designed to simultaneously boost <strong>effectiveness</strong> in energy storage systems and the hydrogen evolution reaction (HER). The strategic configuration of the titanium-based metal organic framework (MOF) MIL-125, due to its huge amount of electron donor configuration, the high electrical conductivity nature of 2D titanium carbide MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>) as electron transfer mediator, and perovskite strontium titanate (SrTiO<sub>3</sub>) enables a unique nanocomposite to provide multi-organic active sites, high electrical conductivity, and high electrochemically active surface area. The composite material demonstrated a specific capacity (<em>Qs</em>) of 260 C/g, an energy density (<em>E</em><sub><em>d</em></sub>) of 65.76 Wh/kg, and a power density (<em>P</em><sub><em>d</em></sub>) of 1250 W/kg, while retaining cycling stability over 1000 charge-discharge cycles. The electrochemical impedance spectroscopy (EIS) results also demonstrate a low charge transfer resistance of 42 Ω, indicating efficient ion and electron transport. The MIL-125/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>@SrTiO<sub>3</sub> exhibited significant HER overpotential and Tafel slope, indicating rapid hydrogen evolution kinetics and catalytic stability. MIL-125/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>@SrTiO<sub>3</sub> underscores bifunctional electrochemical performance, which confirms it as an advanced material platform for next-generation integrated energy storage and hydrogen generation technologies.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"355 ","pages":"Article 125777"},"PeriodicalIF":3.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号