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Redox-associated phase transition of a marginally stable synthetic polymer 一种微稳定合成聚合物的氧化还原相关相变
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-10 DOI: 10.1039/d5cc02924d
Takafumi Enomoto, Keita Terui, Shunsuke Yagi, Aya M. Akimoto, Ryo Yoshida
We elucidated the stimuli-responsive phase transition in a synthetic model of marginally stable proteins composed of poly(N-isopropylacrylamide) with incorporated redox-responsive sites. Redox-state changes in a single redox-responsive site were efficiently converted to hydration and dehydration of multiple monomer units within the polymer chain synchronized with electron transfer.
我们在一个合成模型中阐明了刺激反应的相变,该模型是由含有氧化还原反应位点的聚n -异丙基丙烯酰胺组成的边缘稳定蛋白质。单个氧化还原反应位点的氧化还原状态变化有效地转化为聚合物链内多个单体单元的水合和脱水,同时伴有电子转移。
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引用次数: 0
A sulfonic acid-functionalized donor-acceptor conjugated organic polymer for enhanced photocatalytic hydrogen peroxide production. 一种用于增强光催化过氧化氢生产的磺酸功能化给受体共轭有机聚合物。
IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-10 DOI: 10.1039/d5cc02942b
Qingxia Zhu, Haoxi Wang, Xiaobo Luo, Wuzi Zhao, Danfeng Wang, Shiyuan Zhou, Lingyun Xu, Guangfeng Liu, Peiyang Gu

A sulfonic acid-functionalized conjugated organic polymer named BMS was synthesized to boost H2O2 photosynthesis. Sulfonic acid groups enhanced hydrophilicity, O2 adsorption, and charge transfer, enabling a H2O2 production rate of 2.59 mmol g-1 h-1 in air and pure water, and a rate of 3.08 mmol g-1 h-1 under O2-saturated conditions.

合成了一种磺酸功能化共轭有机聚合物BMS,以促进H2O2的光合作用。磺酸基团增强了亲水性、O2吸附和电荷转移,在空气和纯水条件下H2O2的产率为2.59 mmol g-1 h-1,在O2饱和条件下的产率为3.08 mmol g-1 h-1。
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引用次数: 0
Esterification of carboxylic acids using carbon disulfide (CS2) as a coupling agent 以二硫化碳(CS2)为偶联剂的羧酸酯化反应
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-10 DOI: 10.1039/d5cc02553b
A. Ziyaei Halimehjani, Z. Marjani
A novel and efficient method for the esterification of carboxylic acids with alcohols has been developed, utilizing carbon disulfide as a coupling agent. A wide range of aliphatic and aromatic carboxylic acids, including dicarboxylic acids, protected amino acids, and fatty acids, are well-tolerated under this protocol, delivering excellent yields. The key advantages of this method include low alcohol loading, excellent to quantitative yields, metal- and acid-free conditions, neutral reaction conditions, as well as a straightforward work-up and purification process.
以二硫化碳为偶联剂,开发了一种新的、高效的羧酸与醇酯化反应方法。广泛的脂肪族和芳香族羧酸,包括二羧酸,受保护的氨基酸和脂肪酸,在该方案下具有良好的耐受性,提供优异的产量。该方法的主要优点包括低酒精负荷,极好的定量产率,无金属和酸的条件,中性反应条件,以及简单的处理和纯化过程。
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引用次数: 0
A Lewis basic CeO2 cocatalyst expedites two-electron air electroreduction at the theoretical limit 刘易斯碱CeO2助催化剂在理论极限下加速双电子空气电还原
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-10 DOI: 10.1039/d5cc00909j
Lili Jiang, Shan Ding, Haiyun Li, Jingjing Duan, Minmin Yan, Sheng Chen
Two-electron air electroreduction has shown low efficiency at the theoretical limit. Here, a Lewis basic CeO2 cocatalyst was used to expedite the reaction, achieving >90% Faradaic efficiency at the theoretical limit. Theoretical and experimental analyses demonstrate that the incorporation of CeO2 alters the electronic structure of ZnO, thereby enhancing selective oxygen adsorption.
双电子空气电还原在理论极限下效率较低。在这里,使用路易斯碱CeO2助催化剂来加速反应,在理论极限下达到了90%的法拉第效率。理论和实验分析表明,CeO2的加入改变了ZnO的电子结构,从而增强了ZnO的选择性氧吸附。
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引用次数: 0
Evaluating CO2-to-formic acid electrocatalysts in different device configurations. 评价不同装置配置下co2 -甲酸电催化剂的性能。
IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-10 DOI: 10.1039/d5cc02655e
Thuy-Duong Nguyen-Phan, James E Ellis, Bret H Howard, Douglas R Kauffman

We evaluated CO2 electroreduction differences of three materials in aqueous H-cell, gas diffusion electrode (GDE) half-cell, and full-cell electrolyzer devices. Mass-transport limited catalyst differences in H-cells become more apparent in gas-fed GDE half-cells; however, voltage contributions from device components can mask cathode differences in full-cell devices until high current density.

我们评估了三种材料在水氢电池、气体扩散电极(GDE)半电池和全电池电解槽装置中CO2电还原的差异。在气体供气的GDE半电池中,h电池中质量输运受限的催化剂差异变得更加明显;然而,来自器件组件的电压贡献可以掩盖全电池器件的阴极差异,直到高电流密度。
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引用次数: 0
Lanthanoid-doped BiVO4 microswimmers with built-in photon upconversion and light-driven motion 内置光子上转换和光驱动运动的类镧掺杂BiVO4微游泳器
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-08 DOI: 10.1039/d5cc02091c
João Marcos Gonçalves, Luisa Natalia Córdoba Urresti, Yufen Chen, Katherine Villa
We report a one-step synthesis of lanthanoid-doped BiVO4 microswimmers that integrate photon upconversion and light-driven propulsion within a single particle. Yb3+/Er3+ doping enables near-infrared-to-visible upconversion, while BiVO4 provides photocatalytic propulsion. This straightforward strategy avoids multi-component assembly and opens up new opportunities for designing multifunctional photoactive microswimmers with intrinsic luminescence for potential use in environmental and biomedical applications.
我们报道了一种一步合成的类镧掺杂BiVO4微游泳体,它在单个粒子中集成了光子上转换和光驱动推进。Yb3+/Er3+掺杂实现近红外到可见光的上转换,而BiVO4提供光催化推进。这种直接的策略避免了多组分组装,并为设计具有内在发光的多功能光活性微游泳体开辟了新的机会,这些微游泳体在环境和生物医学应用中具有潜在的用途。
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引用次数: 0
Advances in oxychalcogenide materials for hydrogen evolution photocatalysis in aqueous media 氧硫系材料在水介质中析氢光催化的研究进展
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-08 DOI: 10.1039/d5cc01448d
Sandy Al Bacha, Emma E. McCabe, Houria Kabbour
The growing demand for sustainable energy solutions has led to significant research in photocatalytic water splitting, a promising approach for clean hydrogen production. Oxychalcogenide materials have emerged as a compelling class of photocatalysts due to their tunable electronic structures, various architectures, and favorable band edge positions for solar water splitting. This review provides a comprehensive analysis of recent advances in oxychalcogenide photocatalysts, emphasizing their structural diversity, composition–property relationships, and key design strategies. We highlight the impact of anion selection, cation contributions, charge carrier dynamics, and material stability on photocatalytic performance. Furthermore, we discuss innovative experimental approaches, such as surface modifications that have been employed to enhance activity. By consolidating existing knowledge and identifying critical parameters for optimization, this review aims to shed light on this class of photocatalysts and help guide the rational design of next-generation oxychalcogenide photocatalysts for efficient and scalable solar hydrogen production.
对可持续能源解决方案日益增长的需求导致了对光催化水分解的重要研究,这是一种有前途的清洁制氢方法。氧硫族化合物由于其可调谐的电子结构、多样的结构和有利的光带边缘位置而成为一种引人注目的光催化剂。本文综述了氧硫族光催化剂的研究进展,重点介绍了氧硫族光催化剂的结构多样性、组成-性能关系和关键设计策略。我们强调阴离子选择、阳离子贡献、载流子动力学和材料稳定性对光催化性能的影响。此外,我们还讨论了创新的实验方法,例如用于增强活性的表面修饰。通过巩固现有知识和确定优化的关键参数,本文旨在揭示这类光催化剂,并帮助指导合理设计下一代硫族氧光催化剂,以实现高效和可扩展的太阳能制氢。
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引用次数: 0
Architecture engineering and lattice modulation on exposed Cu (100)/(111) surfaces for efficient electrochemical CO2 reduction 暴露Cu(100)/(111)表面的结构工程和晶格调制用于有效的电化学CO2还原
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-08 DOI: 10.1039/d5cc02854j
Zhen He, Hanwen Cheng, Hao Liu, Tengfei Xiong, Chengming Wang, Xiaobin Liao, Lingwen Liao
Core-shell and hierarchical Pd-Cu nanowires, exposing strained Cu(100) and Cu (100)/Cu(111) surfaces, respectively, were constructed. The hierarchical Pd-Cu demonstrated superior overall activity, ethylene selectivity, and reaction kinetics toward electrochemical CO2 reduction reaction. Theoretical calculations indicate the lattice-expanded Cu (100)/(111) interface effectively reduce the energy barrier for C2 production.
构建了分别暴露应变Cu(100)和Cu(100) /Cu(111)表面的核-壳纳米线和分层Pd-Cu纳米线。层次化钯铜在电化学CO2还原反应中表现出优异的总活性、乙烯选择性和反应动力学。理论计算表明,晶格扩展的Cu(100)/(111)界面有效地降低了生成C2的能垒。
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引用次数: 0
Hydrophobized metal-organic framework as protection shell to stabilize CdS quantum dots for sunlight-driven aerobic oxidation 疏水金属-有机骨架作为保护壳稳定CdS量子点用于光照驱动的好氧氧化
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-08 DOI: 10.1039/d5cc01882j
Zewei Liu, Zepeng Yu, Shu Li, Jun Pang, Yuzhu Wang, Zhiqiang Wu, Sijie Liu, Rong Tan
Hydrophobized metal-organic framework (MOF) of MIL-101(Cr) (M101) was elaborately constructed to encapsulate CdS quantum dots (QDs). The customized hydrophobic MOF shell shielded CdS QDs from exposure to moisture, and simultaneously quenched the holes of CdS through Z-scheme charge transfer, thus inhibiting CdS photocorrosion for efficient sunlight-driven aerobic oxidation.
精心构建了MIL-101(Cr) (M101)的疏水金属有机骨架(MOF)来封装CdS量子点(QDs)。定制的疏水MOF壳屏蔽了CdS量子点的水分暴露,同时通过Z-scheme电荷转移淬灭CdS的空穴,从而抑制CdS的光腐蚀,实现高效的阳光驱动的好氧氧化。
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引用次数: 0
Heterostructure CuSe/MnSe2 with Se Vacancies of Rapid Ion Kinetics for Low-temperature Sodium-ion Batteries 低温钠离子电池中具有Se空位的异质结构CuSe/MnSe2的快速离子动力学
IF 4.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-07-08 DOI: 10.1039/d5cc01589h
Qinghua Deng, Kai Yang, Zhiqian Li, Xiaodong Geng, Zhangyu Wang, Quanli Liu, Jiahe Li, Nan Zhu
Herein, a CuSe/MnSe2 heterostructure with Se vacancies is fabricaed as an ultrafast anode for low-temperature sodium-ion batteries. It achieves 380.3 mAh g-1 after 1500 cycles (3.0 A g-1) and 403.6 mAh g-1 at -30°C (0.5 A g-1), highlighting exceptional cyclability and low-temperature adaptability.
本文制备了一种具有Se空位的CuSe/MnSe2异质结构作为低温钠离子电池的超快阳极。在1500次循环(3.0 A g-1)后达到380.3 mAh g-1,在-30°C (0.5 A g-1)时达到403.6 mAh g-1,突出了卓越的可循环性和低温适应性。
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