Pub Date : 2026-01-01Epub Date: 2026-02-23DOI: 10.1016/j.crgsc.2026.100513
Nahid M. Chehade , Marwa Faraj , Rami Mhanna , Mohamed Bouaziz , Ghassan O. Younes , Mohammad H. El-Dakdouki
Green silver nanoparticles (AgNPs) were prepared as green and sustainable anticorrosion agents using kiwi peels aqueous extract (KPAE) as a natural reductant, providing a feasible route for biowaste valorization. Structural and morphological analysis of the biosynthesized KPAE-AgNPs validated the successful formation of spherical crystalline AgNPs with an average core size of 53 nm and high colloidal stability, with silver being the principal element of the nanocomposite. Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) assessed the anticorrosion properties of the green nanoparticles on mild steel in 0.5 M HCl. The nanoparticles demonstrated a mixed-type inhibition with cathodic predominance, and achieved maximum corrosion inhibition of 60% at 1250 ppm. At the same concentration, the plant extract achieved a modest 40% inhibition efficiency. Thermodynamic analyses revealed that adsorption process was primarily physisorption-driven, and the corrosion inhibition was endothermic. Overall, the superior corrosion inhibition performance of the nanoparticles underscored their promise as effective, low-cost green anticorrosion agents for the protection of mild steel in acidic environment, and their applicability in environmentally benign surface protection strategies, as well as industrial acid cleaning and pickling.
以猕猴桃果皮水提物（KPAE）为天然还原剂制备绿色纳米银（AgNPs），为生物废弃物的再生利用提供了一条可行的途径。生物合成的KPAE-AgNPs的结构和形态分析证实了AgNPs的成功形成，平均核尺寸为53 nm，胶体稳定性高，银是纳米复合材料的主要元素。用动电位极化（PDP）和电化学阻抗谱（EIS）评价了绿色纳米颗粒在0.5 M HCl中对低碳钢的防腐性能。纳米颗粒表现出具有阴极优势的混合型缓蚀，在1250 ppm时达到了60%的最大缓蚀效果。在相同浓度下，植物提取物的抑制率为40%。热力学分析表明，吸附过程主要是物理吸附驱动的，而腐蚀抑制是吸热的。总的来说，纳米颗粒优异的缓蚀性能凸显了它们作为酸性环境中保护低碳钢的有效、低成本的绿色防腐蚀剂的前景，以及它们在环境友好的表面保护策略以及工业酸洗和酸洗中的适用性。
{"title":"Green silver-based nanomaterials derived from kiwi peel biowaste for sustainable protection of mild steel in acidic media","authors":"Nahid M. Chehade , Marwa Faraj , Rami Mhanna , Mohamed Bouaziz , Ghassan O. Younes , Mohammad H. El-Dakdouki","doi":"10.1016/j.crgsc.2026.100513","DOIUrl":"10.1016/j.crgsc.2026.100513","url":null,"abstract":"<div><div>Green silver nanoparticles (AgNPs) were prepared as green and sustainable anticorrosion agents using kiwi peels aqueous extract (KPAE) as a natural reductant, providing a feasible route for biowaste valorization. Structural and morphological analysis of the biosynthesized KPAE-AgNPs validated the successful formation of spherical crystalline AgNPs with an average core size of 53 nm and high colloidal stability, with silver being the principal element of the nanocomposite. Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) assessed the anticorrosion properties of the green nanoparticles on mild steel in 0.5 M HCl. The nanoparticles demonstrated a mixed-type inhibition with cathodic predominance, and achieved maximum corrosion inhibition of 60% at 1250 ppm. At the same concentration, the plant extract achieved a modest 40% inhibition efficiency. Thermodynamic analyses revealed that adsorption process was primarily physisorption-driven, and the corrosion inhibition was endothermic. Overall, the superior corrosion inhibition performance of the nanoparticles underscored their promise as effective, low-cost green anticorrosion agents for the protection of mild steel in acidic environment, and their applicability in environmentally benign surface protection strategies, as well as industrial acid cleaning and pickling.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"12 ","pages":"Article 100513"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147421023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study presents an integrated hydrometallurgical approach for valorizing strontium ferrite sludge generated from the magnet manufacturing industry by selectively recovering iron (Fe) and strontium (Sr) into high-purity products. The process employed sulfuric acid leaching under optimized conditions (4.0 mol L−1 H2SO4, 90 °C, solid-to-liquid ratio of 40 g L−1), achieving near-complete Fe dissolution while simultaneously precipitating Sr as strontium sulfate (SrSO4). The Fe-rich leachate underwent pH-controlled precipitation followed by thermal treatment to yield phase-pure hematite (α-Fe2O3). In parallel, the SrSO4 precipitate was converted to strontium carbonate (SrCO3) via a double-ion replacement reaction with aqueous Na2CO3, which proceeded to completion within 1.5 h and yielded a high-purity product with platelet-like morphology. This integrated process offers a sustainable, economically viable pathway to transform industrial waste into two valuable materials, thereby advancing circular-economy principles and sustainable waste-management strategies in the magnet manufacturing sector.
本研究提出了一种综合湿法冶金方法，通过选择性地回收铁（Fe）和锶（Sr）获得高纯度产品，对磁铁制造业产生的锶铁氧体污泥进行增值。该工艺采用硫酸浸出，在优化条件下（4.0 mol L−1 H2SO4, 90℃，固液比40 g L−1），实现了铁的近乎完全溶解，同时以硫酸锶（SrSO4）的形式析出锶。富铁渗滤液经ph控制沉淀后热处理得到相纯赤铁矿（α-Fe2O3）。同时，SrSO4沉淀物通过与Na2CO3水溶液的双离子置换反应转化为碳酸锶（SrCO3），该反应在1.5小时内完成，并产生了具有血小板样形态的高纯度产品。这一综合过程提供了一条可持续的、经济上可行的途径，将工业废物转化为两种有价值的材料，从而推进了磁铁制造部门的循环经济原则和可持续废物管理战略。
{"title":"Hydrometallurgical valorization of strontium ferrite magnet sludge for the selective production of high-purity hematite (α-Fe2O3) and strontium carbonate (SrCO3)","authors":"Chaiyasit Longbutsri , Tanongsak Yingnakorn , Thanapon Chandakhiaw , Chatisa Kansomket , Sirunya Somla , Natthicha Ma-Ud , Muwafaq A. Rabeea , Tapany Patcharawit , Sakhob Khumkoa","doi":"10.1016/j.crgsc.2026.100507","DOIUrl":"10.1016/j.crgsc.2026.100507","url":null,"abstract":"<div><div>This study presents an integrated hydrometallurgical approach for valorizing strontium ferrite sludge generated from the magnet manufacturing industry by selectively recovering iron (Fe) and strontium (Sr) into high-purity products. The process employed sulfuric acid leaching under optimized conditions (4.0 mol L<sup>−1</sup> H<sub>2</sub>SO<sub>4</sub>, 90 °C, solid-to-liquid ratio of 40 g L<sup>−1</sup>), achieving near-complete Fe dissolution while simultaneously precipitating Sr as strontium sulfate (SrSO<sub>4</sub>). The Fe-rich leachate underwent pH-controlled precipitation followed by thermal treatment to yield phase-pure hematite (α-Fe<sub>2</sub>O<sub>3</sub>). In parallel, the SrSO<sub>4</sub> precipitate was converted to strontium carbonate (SrCO<sub>3</sub>) via a double-ion replacement reaction with aqueous Na<sub>2</sub>CO<sub>3</sub>, which proceeded to completion within 1.5 h and yielded a high-purity product with platelet-like morphology. This integrated process offers a sustainable, economically viable pathway to transform industrial waste into two valuable materials, thereby advancing circular-economy principles and sustainable waste-management strategies in the magnet manufacturing sector.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"12 ","pages":"Article 100507"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-01Epub Date: 2026-09-03DOI: 10.1016/j.crgsc.2026.100531
Sushmita, Nithya Sri G, Deepa Prabhu
Marine corrosion is a long-term durability challenge for ships, offshore platforms, pipelines, ports, and coastal infrastructure. Seawater, dissolved oxygen, humidity, wet-dry cycling, salt deposition, and mechanical degradation act synergistically to degrade metallic structures and shorten their service life. Because protective coatings are affordable, scalable, and appropriate for big marine structures, they continue to be the most suitable method for controlling corrosion. However, once water, oxygen, and chloride ions penetrate through pores, cracks, or damaged areas, traditional coatings frequently fail to provide long-term protection.
This review uses an integrated evolutionary framework connecting passive barriers, nanostructured coatings, active inhibitor systems, green inhibitors, carrier-based smart coatings, and multifunctional responsive architectures. The protection mechanisms, benefits, and failure modes of traditional passive barrier coatings—such as polymeric, metallic, ceramic, and sol-gel systems—under maritime exposure are discussed. The review then shifts to nanostructured barrier-enhanced coatings, wherein materials based on graphene, carbon nanotubes, metal oxide nanoparticles, nano clays, and related fillers. Active inhibitor-loaded coatings are further investigated, with their drawbacks, including rapid inhibitor depletion, poor compatibility, and uncontrolled leaching.
This review focuses on the transition to responsive and sustainable coating technologies. Carrier-based smart coating systems, including microcapsules, nanotubes, mesoporous particles, metal–organic frameworks, and hybrid multifunctional architectures, are assessed for controlled, localized, and stimulus-responsive protection to overcome these restrictions. The review concludes that the scientific and translational challenges for next-generation marine corrosion-protective coatings are long-term marine durability, controlled inhibitor release, coating–carrier compatibility, scalable fabrication, environmental safety, reproducibility, and standardized validation.
{"title":"Beyond passive barriers: Evolution toward sustainable and responsive coatings for marine corrosion protection","authors":"Sushmita, Nithya Sri G, Deepa Prabhu","doi":"10.1016/j.crgsc.2026.100531","DOIUrl":"10.1016/j.crgsc.2026.100531","url":null,"abstract":"<div><div>Marine corrosion is a long-term durability challenge for ships, offshore platforms, pipelines, ports, and coastal infrastructure. Seawater, dissolved oxygen, humidity, wet-dry cycling, salt deposition, and mechanical degradation act synergistically to degrade metallic structures and shorten their service life. Because protective coatings are affordable, scalable, and appropriate for big marine structures, they continue to be the most suitable method for controlling corrosion. However, once water, oxygen, and chloride ions penetrate through pores, cracks, or damaged areas, traditional coatings frequently fail to provide long-term protection.</div><div>This review uses an integrated evolutionary framework connecting passive barriers, nanostructured coatings, active inhibitor systems, green inhibitors, carrier-based smart coatings, and multifunctional responsive architectures. The protection mechanisms, benefits, and failure modes of traditional passive barrier coatings—such as polymeric, metallic, ceramic, and sol-gel systems—under maritime exposure are discussed. The review then shifts to nanostructured barrier-enhanced coatings, wherein materials based on graphene, carbon nanotubes, metal oxide nanoparticles, nano clays, and related fillers. Active inhibitor-loaded coatings are further investigated, with their drawbacks, including rapid inhibitor depletion, poor compatibility, and uncontrolled leaching.</div><div>This review focuses on the transition to responsive and sustainable coating technologies. Carrier-based smart coating systems, including microcapsules, nanotubes, mesoporous particles, metal–organic frameworks, and hybrid multifunctional architectures, are assessed for controlled, localized, and stimulus-responsive protection to overcome these restrictions. The review concludes that the scientific and translational challenges for next-generation marine corrosion-protective coatings are long-term marine durability, controlled inhibitor release, coating–carrier compatibility, scalable fabrication, environmental safety, reproducibility, and standardized validation.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"13 ","pages":"Article 100531"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148958129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-01Epub Date: 2026-05-13DOI: 10.1016/j.crgsc.2026.100521
Lam Ba Nguyen , Yoshimasa Yamamoto , Nghia Trung Phan , Thuong Thi Nghiem , Seiichi Kawahara
Uniformly vulcanized stereoregular natural rubber was prepared by accelerated sulfur vulcanization of deproteinized natural rubber (DPNR) with an optimal amount of octadecylamine (ODA) to open DPNR research field as a green, sustainable chemistry. The DPNR prepared from natural rubber latex of the Para rubber tree (Hevea brasiliensis), was vulcanized using standard recipe containing stearic acid, ZnO, vulcanization accelerator, and sulfur, together with various amounts of ODA (0.2–6.0 phr). The cure characteristics measured with a rheometer depended on the amount of ODA. The resulting vulcanized DPNR was characterized by swelling measurements and rubber-state NMR spectroscopy. The crosslink density estimated from the swelling ratio was highest at 2.6 phr ODA, corresponding to a concentration of approximately 0.10 mol/kg-rubber, although the intensity ratios of signals assigned to C–S linkages as crosslinking junctions were the lowest. The tensile strength of the vulcanized DPNR was also markedly improved at 2.6 phr ODA. From the results, 0.10 mol/kg-rubber (2.6 phr) was a critical ODA concentration for preparing the uniformly vulcanized stereoregular natural rubber with the highest crosslink density and the smallest amount of C–S linkage. The resulting uniformly vulcanized stereoregular natural rubber exhibited superior mechanical properties with effective strain-induced crystallization.
{"title":"Preparation of uniformly vulcanized stereoregular natural rubber through critical concentration determination of nitrogen-containing compounds","authors":"Lam Ba Nguyen , Yoshimasa Yamamoto , Nghia Trung Phan , Thuong Thi Nghiem , Seiichi Kawahara","doi":"10.1016/j.crgsc.2026.100521","DOIUrl":"10.1016/j.crgsc.2026.100521","url":null,"abstract":"<div><div>Uniformly vulcanized stereoregular natural rubber was prepared by accelerated sulfur vulcanization of deproteinized natural rubber (DPNR) with an optimal amount of octadecylamine (ODA) to open DPNR research field as a green, sustainable chemistry. The DPNR prepared from natural rubber latex of the Para rubber tree (<em>Hevea brasiliensis</em>), was vulcanized using standard recipe containing stearic acid, ZnO, vulcanization accelerator, and sulfur, together with various amounts of ODA (0.2–6.0 phr). The cure characteristics measured with a rheometer depended on the amount of ODA. The resulting vulcanized DPNR was characterized by swelling measurements and rubber-state NMR spectroscopy. The crosslink density estimated from the swelling ratio was highest at 2.6 phr ODA, corresponding to a concentration of approximately 0.10 mol/kg-rubber, although the intensity ratios of signals assigned to C–S linkages as crosslinking junctions were the lowest. The tensile strength of the vulcanized DPNR was also markedly improved at 2.6 phr ODA. From the results, 0.10 mol/kg-rubber (2.6 phr) was a critical ODA concentration for preparing the uniformly vulcanized stereoregular natural rubber with the highest crosslink density and the smallest amount of C–S linkage. The resulting uniformly vulcanized stereoregular natural rubber exhibited superior mechanical properties with effective strain-induced crystallization.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"12 ","pages":"Article 100521"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-01Epub Date: 2026-01-19DOI: 10.1016/j.crgsc.2026.100506
P. Satishkumar , Arun M. Isloor , Somasekhara Rao Todeti , Ramin Farnood
This study presents the successful synthesis of two-dimensional titanium MXene Ti3C2Tx and its incorporation into polyphenylsulfone membranes for enhanced water purification. The titanium MXene-embedded polyphenylsulfone exhibited a significant increase in water permeation, achieving a flux of 244 L m−2 h−1 compared to 93 L m−2 h−1 in polyphenylsulfone membrane without the MXene additive. The modified membrane also demonstrated improved hydrophilicity, as evidenced by a decrease in water contact angle from 82.8° to 69°, facilitating greater water affinity and transport. In dye filtration tests, the optimal membrane achieved high removal efficiencies of 95.83 % for reactive black 5 dye and 81.7 % for reactive orange 16 dye, along with a remarkable 98.2 % removal of humic acid. Fabricated membrane is successful in rejecting 78.4 % of antibiotic named tetracycline. These results highlight the potential of titanium MXene as an additive to enhance the performance of polyphenylsulfone membranes, providing an effective solution for high-flux, selective water purification applications.
本研究成功合成了二维钛MXene Ti3C2Tx，并将其掺入聚苯砜膜中，以增强水的净化效果。钛MXene包埋的聚苯砜膜的水渗透通量显著增加，达到244 L m−2 h−1，而未添加MXene的聚苯砜膜的水渗透通量为93 L m−2 h−1。改性膜的亲水性也得到了改善，水接触角从82.8°降低到69°，有利于提高亲水性和运输能力。在染料过滤试验中，最优膜对活性黑色5染料的去除率为95.83%，对活性橙色16染料的去除率为81.7%，对腐植酸的去除率为98.2%。合成膜对四环素类抗生素的排异率为78.4%。这些结果突出了钛MXene作为添加剂增强聚苯砜膜性能的潜力，为高通量、选择性水净化应用提供了有效的解决方案。
{"title":"Engineering high flux 2D titanium MXene incorporated membranes for broad spectrum pollutant rejection","authors":"P. Satishkumar , Arun M. Isloor , Somasekhara Rao Todeti , Ramin Farnood","doi":"10.1016/j.crgsc.2026.100506","DOIUrl":"10.1016/j.crgsc.2026.100506","url":null,"abstract":"<div><div>This study presents the successful synthesis of two-dimensional titanium MXene Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> and its incorporation into polyphenylsulfone membranes for enhanced water purification. The titanium MXene-embedded polyphenylsulfone exhibited a significant increase in water permeation, achieving a flux of 244 L m<sup>−2</sup> h<sup>−1</sup> compared to 93 L m<sup>−2</sup> h<sup>−1</sup> in polyphenylsulfone membrane without the MXene additive. The modified membrane also demonstrated improved hydrophilicity, as evidenced by a decrease in water contact angle from 82.8° to 69°, facilitating greater water affinity and transport. In dye filtration tests, the optimal membrane achieved high removal efficiencies of 95.83 % for reactive black 5 dye and 81.7 % for reactive orange 16 dye, along with a remarkable 98.2 % removal of humic acid. Fabricated membrane is successful in rejecting 78.4 % of antibiotic named tetracycline. These results highlight the potential of titanium MXene as an additive to enhance the performance of polyphenylsulfone membranes, providing an effective solution for high-flux, selective water purification applications.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"12 ","pages":"Article 100506"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-01Epub Date: 2026-06-16DOI: 10.1016/j.crgsc.2026.100527
Luis Diego Mora-Araya , Juan Miguel Zúñiga-Umaña , José Roberto Vega-Baudrit
Malpighia emarginata (acerola) is a tropical fruit widely recognized for its exceptionally high content of ascorbic acid, carotenoids, polyphenols, and other bioactive compounds with antioxidant, anti-inflammatory, and antimicrobial properties. This review summarizes recent advances on the phytochemical characterization of different parts of acerola—including fruit, leaves, and agro-industrial by-products—and discusses their biological relevance. Emphasis is placed on the emerging field of green synthesis of metallic nanoparticles using plant-derived extracts as reducing and stabilizing agents. While numerous plant species have been extensively explored for nanoparticle biosynthesis, acerola remains remarkably underreported despite its rich redox-active composition. Current evidence suggests that acerola-derived extracts could enable the eco-friendly production of stable metallic nanoparticles with potential biomedical, antimicrobial, and catalytic applications. This review highlights existing gaps, summarizes reported acerola-mediated nanoparticle systems, and proposes future research directions to fully exploit the synergistic potential of acerola phytochemicals in sustainable nanotechnology.
{"title":"On the potential of Acerola: Current state of properties, availability, and green synthesis of metallic nanoparticles","authors":"Luis Diego Mora-Araya , Juan Miguel Zúñiga-Umaña , José Roberto Vega-Baudrit","doi":"10.1016/j.crgsc.2026.100527","DOIUrl":"10.1016/j.crgsc.2026.100527","url":null,"abstract":"<div><div><em>Malpighia emarginata</em> (acerola) is a tropical fruit widely recognized for its exceptionally high content of ascorbic acid, carotenoids, polyphenols, and other bioactive compounds with antioxidant, anti-inflammatory, and antimicrobial properties. This review summarizes recent advances on the phytochemical characterization of different parts of acerola—including fruit, leaves, and agro-industrial by-products—and discusses their biological relevance. Emphasis is placed on the emerging field of green synthesis of metallic nanoparticles using plant-derived extracts as reducing and stabilizing agents. While numerous plant species have been extensively explored for nanoparticle biosynthesis, acerola remains remarkably underreported despite its rich redox-active composition. Current evidence suggests that acerola-derived extracts could enable the eco-friendly production of stable metallic nanoparticles with potential biomedical, antimicrobial, and catalytic applications. This review highlights existing gaps, summarizes reported acerola-mediated nanoparticle systems, and proposes future research directions to fully exploit the synergistic potential of acerola phytochemicals in sustainable nanotechnology.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"13 ","pages":"Article 100527"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148336521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To date, inhibitions of drug resistant microorganisms are a key feature of metal nanomaterial. In this study, ZnO NPs were synthesized using Juticia Schimperiana leaf extract, and zinc acetate (Zn(CH3COO)2) solution. The biosynthesized ZnO NPs were characterized via PXRD, UV-Vis, FT-IR, TGA/DTA and SEM spectroscopic methods. UV-Vis spectra showed absorption peak in visible region at 440 nm for ZnO NPs, this confirms the formations of ZnO NPs. In the FT-IR analysis, band observed at 487 cm−1 corresponding to Zn-O stretching. SEM images showed a flake-like structure, and agglomerated morphology and TGA/DTA analysis indicated the total weight loss of 6.24% for the biosynthesized ZnO NPs, this indicates the high thermal stability the synthesized nanoparticles. The average crystal size in PXRD of the synthesized ZnO NPs was found to be 31 nm. Moreover, BET results shows higher pore volume (0.194 cc/g), pore size(8.812 Å), and specific surface area(680 m2/g) of ZnONPs. The in vitro antibacterial activities of the synthesized ZnO NPs showed a good activities for against S. pyogenes (19.00 ± 0.2 mm), S. aureus (20.00 ± 0.3 mm), E. coli (18.00 ± 0.5 mm), and K. pneumonia (18.00 ± 0.5 mm) at 75 μg/mL using disc diffusion method. The finding of the synthesized ZnO NPs has a potential activity and it has an effective potential for the developments of a new antibacterial drug agent, and further in vivo studies are needed for validation of this drug.
{"title":"Sustainable synthesis of zinc oxide nanoparticles using Justicia schimperiana leaf Extract: Characterization and antibacterial activities investigation","authors":"Tadesse Bizuayehu, Getachew Kibret, Ketemaw Salelign, Berie Kumie","doi":"10.1016/j.crgsc.2026.100534","DOIUrl":"10.1016/j.crgsc.2026.100534","url":null,"abstract":"<div><div>To date, inhibitions of drug resistant microorganisms are a key feature of metal nanomaterial. In this study, ZnO NPs were synthesized using <em>Juticia Schimperiana</em> leaf extract, and zinc acetate (Zn(CH<sub>3</sub>COO)<sub>2</sub>) solution. The biosynthesized ZnO NPs were characterized via PXRD, UV-Vis, FT-IR, TGA/DTA and SEM spectroscopic methods. UV-Vis spectra showed absorption peak in visible region at 440 nm for ZnO NPs, this confirms the formations of ZnO NPs. In the FT-IR analysis, band observed at 487 cm<sup>−1</sup> corresponding to Zn-O stretching. SEM images showed a flake-like structure, and agglomerated morphology and TGA/DTA analysis indicated the total weight loss of 6.24% for the biosynthesized ZnO NPs, this indicates the high thermal stability the synthesized nanoparticles. The average crystal size in PXRD of the synthesized ZnO NPs was found to be 31 nm. Moreover, BET results shows higher pore volume (0.194 cc/g), pore size(8.812 Å), and specific surface area(680 m<sup>2</sup>/g) of ZnONPs. The in vitro antibacterial activities of the synthesized ZnO NPs showed a good activities for against <em>S. pyogenes (</em>19.00 ± 0.2 mm)<em>, S. aureus (</em>20.00 ± 0.3 mm<em>)</em>, <em>E. coli (</em>18.00 ± 0.5 mm<em>)</em>, and <em>K. pneumonia (</em>18.00 ± 0.5 mm<em>)</em> at 75 μg/mL using disc diffusion method. The finding of the synthesized ZnO NPs has a potential activity and it has an effective potential for the developments of a new antibacterial drug agent, and further in vivo studies are needed for validation of this drug.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"13 ","pages":"Article 100534"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148958130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-01Epub Date: 2026-01-27DOI: 10.1016/j.crgsc.2026.100509
Varinrumpai Seithtanabutara, Apichart Artnaseaw
This study investigated the liquefaction of pine woodchips using water and tetralin as solvents to evaluate their effects on product yield and composition. Experiments were conducted at 350 °C and 400 °C with varying solvent/biomass ratios (1–3 mL/g), followed by analysis of the resulting solid, liquid, and gas products. Results show that both conversion and liquid yield increase with temperature and solvent volume. Water achieved slightly higher conversion, while tetralin significantly enhanced liquid yield, reaching 64.72 %, about 3.5 times higher than water. Solid residues from both processes were carbon-rich with lower H/C and O/C ratios than the feedstock, with slight differences between water and tetralin derived residues. Gas analysis revealed that water promoted higher CO2 production (up to 39.7 %), whereas tetralin favored the formation of C1–C4 hydrocarbons (up to 9.6 %). Methane was the dominant gaseous product, with moderate variation in gas yields based on solvent type, volume, and temperature. Tetralin liquefaction at 400 °C with 3 mL/g solvent produced the highest maltenes and hydrocarbon-rich fractions, more than water. Tetralin facilitated the generation of both aliphatic and aromatic hydrocarbons while minimizing the formation of polycyclic aromatic hydrocarbons (PAHs). In contrast, water yielded fewer hydrocarbons and PAHs. Increasing tetralin volume also promoted heavier aromatic compounds.
{"title":"Comparative liquefaction investigation of pine woodchips using water and tetralin as deoxygenation and hydrogenolysis agents","authors":"Varinrumpai Seithtanabutara, Apichart Artnaseaw","doi":"10.1016/j.crgsc.2026.100509","DOIUrl":"10.1016/j.crgsc.2026.100509","url":null,"abstract":"<div><div>This study investigated the liquefaction of pine woodchips using water and tetralin as solvents to evaluate their effects on product yield and composition. Experiments were conducted at 350 °C and 400 °C with varying solvent/biomass ratios (1–3 mL/g), followed by analysis of the resulting solid, liquid, and gas products. Results show that both conversion and liquid yield increase with temperature and solvent volume. Water achieved slightly higher conversion, while tetralin significantly enhanced liquid yield, reaching 64.72 %, about 3.5 times higher than water. Solid residues from both processes were carbon-rich with lower H/C and O/C ratios than the feedstock, with slight differences between water and tetralin derived residues. Gas analysis revealed that water promoted higher CO<sub>2</sub> production (up to 39.7 %), whereas tetralin favored the formation of C1–C4 hydrocarbons (up to 9.6 %). Methane was the dominant gaseous product, with moderate variation in gas yields based on solvent type, volume, and temperature. Tetralin liquefaction at 400 °C with 3 mL/g solvent produced the highest maltenes and hydrocarbon-rich fractions, more than water. Tetralin facilitated the generation of both aliphatic and aromatic hydrocarbons while minimizing the formation of polycyclic aromatic hydrocarbons (PAHs). In contrast, water yielded fewer hydrocarbons and PAHs. Increasing tetralin volume also promoted heavier aromatic compounds.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"12 ","pages":"Article 100509"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147421010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study investigated the synthesis of cellulose nanofibrils (CNFs) from Caulerpa lentillifera, also known as green caviar or sea grapes, and used as a reinforcing agent in poly(butylene succinate) (PBS) composite films. Inadequate quality sea grapes, generally discarded in aquaculture, were chemical treated using alkaline and bleaching processes, followed by mechanical defibrillation. The synthesized CNFs with fiber diameters between 3.50 and 4.97 nm were produced. Characterizations of structural, thermal, and morphological properties confirmed the successful removal of lignin and hemicellulose, creating the production of high-purity CNFs. The as-synthesized CNFs were added into PBS as reinforcement at different concentrations (0.1-0.5 wt%) and their effects on the properties of the composite were evaluated. FTIR analysis indicated significant interfacial interactions between PBS and nanocellulose, while the presence of hydroxyl groups in CNFs led to a slight decrease in thermal stability. The DSC analysis showed minimal alterations in crystallization behavior. Increasing nanocellulose content reduced optical transparency due to light scattering. The effect arose from nanoscale fiber dispersion within the PBS matrix. The films remained semi-transparent and suitable for packaging requiring controlled light transmission. The research results verified that upcycling of seaweed waste into CNFs reinforced PBS high-performance biocomposites provided an environmentally sustainable material for packaging applications.
{"title":"Upcycling seaweed wastes into high-performance PBS nanocomposites for sustainable packaging applications","authors":"Weraporn Pivsa-Art , Nichanan Phansroy , Sumonman Niamlang , Sommai Pivsa-Art","doi":"10.1016/j.crgsc.2026.100520","DOIUrl":"10.1016/j.crgsc.2026.100520","url":null,"abstract":"<div><div>This study investigated the synthesis of cellulose nanofibrils (CNFs) from Caulerpa lentillifera, also known as green caviar or sea grapes, and used as a reinforcing agent in poly(butylene succinate) (PBS) composite films. Inadequate quality sea grapes, generally discarded in aquaculture, were chemical treated using alkaline and bleaching processes, followed by mechanical defibrillation. The synthesized CNFs with fiber diameters between 3.50 and 4.97 nm were produced. Characterizations of structural, thermal, and morphological properties confirmed the successful removal of lignin and hemicellulose, creating the production of high-purity CNFs. The as-synthesized CNFs were added into PBS as reinforcement at different concentrations (0.1-0.5 wt%) and their effects on the properties of the composite were evaluated. FTIR analysis indicated significant interfacial interactions between PBS and nanocellulose, while the presence of hydroxyl groups in CNFs led to a slight decrease in thermal stability. The DSC analysis showed minimal alterations in crystallization behavior. Increasing nanocellulose content reduced optical transparency due to light scattering. The effect arose from nanoscale fiber dispersion within the PBS matrix. The films remained semi-transparent and suitable for packaging requiring controlled light transmission. The research results verified that upcycling of seaweed waste into CNFs reinforced PBS high-performance biocomposites provided an environmentally sustainable material for packaging applications.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"12 ","pages":"Article 100520"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147858091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-01Epub Date: 2026-05-01DOI: 10.1016/j.crgsc.2026.100519
Mahmiah Mahmiah , Mardi Santoso , Arif Fadlan
Sonneratia alba is an understudied mangrove species with considerable potential as a sustainable source of antioxidant bioactive metabolites. This work aimed to compare traditional extraction methods (maceration (ME); and Soxhlet extraction (SE)) with green technologies such as ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) to evaluate the effect of these methods on the yields, total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity of stem bark extracts from S. alba. Antioxidant potential was determined using DPPH and ABTS assays and the chemical diversity of extract was described by liquid chromatography-high-resolution mass spectrometry (LC–HRMS) profile, attenuated total reflectance-Fourier transform infrared spectroscopy (ATR–FTIR), and multivariate chemometric analyses. There were significant differences between extraction methods (p < 0.05). Among all, MAE had the maximum extraction yield (25.95% w/w), however in case of phenolic-rich extracts UAE showed the greatest TPC (338.54 mg GAE/g) and significant flavonoid content was found in UAE extract (11.63 mg QE/g). UAE also showed the highest antioxidant activities with the lowest IC50 values in both DPPH and ABTS assays. Chemometric studies successfully discriminated the extracts according to chemical profiles and highlighted high correlations between antioxidant activity, TPC, TFC and extraction yield. According to the LC–HRMS data, the primary antioxidant metabolites are alkaloids, triterpenoids, flavonoids, and phenolic acids. Overall, UAE at 40 °C for 30 min is recognized as an effective and environmentally friendly method for recovering antioxidant metabolites from S. alba, emphasizing the importance of mangrove bioresources for potential pharmaceutical and nutraceutical uses.
{"title":"Green-assisted extraction strategies for antioxidant metabolites from Indonesian mangrove Sonneratia alba stem bark supported by LC–HRMS and chemometric analysis","authors":"Mahmiah Mahmiah , Mardi Santoso , Arif Fadlan","doi":"10.1016/j.crgsc.2026.100519","DOIUrl":"10.1016/j.crgsc.2026.100519","url":null,"abstract":"<div><div><em>Sonneratia alba</em> is an understudied mangrove species with considerable potential as a sustainable source of antioxidant bioactive metabolites. This work aimed to compare traditional extraction methods (maceration (ME); and Soxhlet extraction (SE)) with green technologies such as ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) to evaluate the effect of these methods on the yields, total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity of stem bark extracts from <em>S. alba</em>. Antioxidant potential was determined using DPPH and ABTS assays and the chemical diversity of extract was described by liquid chromatography-high-resolution mass spectrometry (LC–HRMS) profile, attenuated total reflectance-Fourier transform infrared spectroscopy (ATR–FTIR), and multivariate chemometric analyses. There were significant differences between extraction methods (p < 0.05). Among all, MAE had the maximum extraction yield (25.95% w/w), however in case of phenolic-rich extracts UAE showed the greatest TPC (338.54 mg GAE/g) and significant flavonoid content was found in UAE extract (11.63 mg QE/g). UAE also showed the highest antioxidant activities with the lowest IC<sub>50</sub> values in both DPPH and ABTS assays. Chemometric studies successfully discriminated the extracts according to chemical profiles and highlighted high correlations between antioxidant activity, TPC, TFC and extraction yield. According to the LC–HRMS data, the primary antioxidant metabolites are alkaloids, triterpenoids, flavonoids, and phenolic acids. Overall, UAE at 40 °C for 30 min is recognized as an effective and environmentally friendly method for recovering antioxidant metabolites from <em>S. alba</em>, emphasizing the importance of mangrove bioresources for potential pharmaceutical and nutraceutical uses.</div></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"12 ","pages":"Article 100519"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147858092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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