ChemCatChem最新文献_第2页

Particle Size Influence on the Photocatalytic Water Oxidation Using Hydrothermal Synthesized BiVO4 粒径对水热合成BiVO4光催化水氧化的影响

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-31 DOI: 10.1002/cctc.71135

Yideng Shen, Mahmoud Adel Hamza, Zuhur H. Alotaibi, Thomas D. Small, Gunther G. Andersson, Cameron J. Shearer, Gregory F. Metha

{"title":"Particle Size Influence on the Photocatalytic Water Oxidation Using Hydrothermal Synthesized BiVO4","authors":"Yideng Shen, Mahmoud Adel Hamza, Zuhur H. Alotaibi, Thomas D. Small, Gunther G. Andersson, Cameron J. Shearer, Gregory F. Metha","doi":"10.1002/cctc.71135","DOIUrl":"https://doi.org/10.1002/cctc.71135","url":null,"abstract":"Bismuth vanadate (BiVO4) is a promising photocatalyst for water oxidation owing to its visible-light active bandgap and band structure. However, its performance is often hindered by inefficient charge separation and transport. Herein, a hydrothermal synthesis strategy that systematically engineers BiVO4 particle size without altering facet composition is presented, enabling detailed analysis of size-dependent photocatalytic activity. By controlling the reaction time prior to the heating stage, the particle size can be tuned while preserving a consistent (110)/(010) facet ratio. A pronounced enhancement in the apparent quantum yield (AQY) for water oxidation (using Ag+ as a sacrificial reagent) was observed as particle size decreased, with a maximum AQY of 19.4% achieved by the sample with a mode particle size of 365 nm. This enhancement is attributed to increased active surface area and suppressed bulk recombination due to shortened carrier diffusion distance. These findings highlight particle size optimization as a key strategy for enhancing BiVO4 photocatalytic efficiency.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 21","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Why Should Spinel Formation be Controlled in Promoted Ni–Mg–Al Mixed Oxide Catalyst for Ambient Pressure CO2 Hydrogenation? 促进镍镁铝混合氧化物催化剂常压CO2加氢为什么要控制尖晶石的形成？

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-31 DOI: 10.1002/cctc.71137

Paulina Summa, Neha Choudhary, Patrick Da Costa

{"title":"Why Should Spinel Formation be Controlled in Promoted Ni–Mg–Al Mixed Oxide Catalyst for Ambient Pressure CO2 Hydrogenation?","authors":"Paulina Summa, Neha Choudhary, Patrick Da Costa","doi":"10.1002/cctc.71137","DOIUrl":"https://doi.org/10.1002/cctc.71137","url":null,"abstract":"Ni–Mg–Al catalysts promoted with Fe, Co, or Y were synthesized via thermal and microwave-assisted solution combustion synthesis (SCS) to investigate the influence of synthesis routes and promoter chemistry on structural properties and CO2 methanation performance. Thermal SCS produced catalysts with higher surface area, well-developed mesoporosity, greater basicity, and improved Ni reducibility. In contrast, microwave SCS resulted in lower surface area, limited basicity, and increased formation of MgAl2O4 and NiAl2O4 spinel phases. Promoter chemistry significantly influenced Ni reducibility and its local coordination environment. Notably, yttrium incorporation suppressed excessive spinel formation, enabling MW_NiY to retain a higher fraction of readily reducible Ni species and a metallic-like local structure comparable to thermally synthesized catalysts. Post-reaction characterization revealed Ni lattice contraction and reduced crystallite size across all catalysts, suggesting promoter migration and Ni redistribution under methanation conditions. Catalytic evaluation demonstrated consistently high activity and selectivity for thermal SCS catalysts, whereas MW_NiY substantially outperformed MW_NiFe and MW_NiCo despite its less favorable textural properties. These findings establish the critical interplay between synthesis methodology, promoter chemistry, and structural evolution, highlighting yttrium promotion as an effective strategy to overcome microwave SCS limitations and enhance CO2 methanation performance in multicomponent catalytic systems.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 21","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71137","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable Ruthenium Catalytic System for the Hydrogenation of Urea Derivatives 尿素衍生物加氢的可调钌催化体系

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-30 DOI: 10.1002/cctc.71134

Chaojie Zhang, Jun Zhu, Zeyu Wen, Yongtao Wang, Jia Yao, Haoran Li

引用次数: 0

P-Doped NiS for Low-Potential Electrooxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid p掺杂NiS低电位电氧化5-羟甲基糠醛为2,5-呋喃二羧酸

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-29 DOI: 10.1002/cctc.71138

Ting Sang, Liya Ma, Dongfang Ji, Jingcheng Hao, Zhonghao Li

引用次数: 0

Highly Ordered Flexible Fibrous Membrane Electrode With Pt Nanoparticles Supported on Fe-Containing N-Doped Carbon for Oxygen Reduction Reaction 含铁n掺杂碳负载Pt纳米粒子的高有序柔性纤维膜电极用于氧还原反应

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-29 DOI: 10.1002/cctc.71133

Lijuan He, Jujia Zhang, Siwen Zhou, Wentuan Bi

{"title":"Highly Ordered Flexible Fibrous Membrane Electrode With Pt Nanoparticles Supported on Fe-Containing N-Doped Carbon for Oxygen Reduction Reaction","authors":"Lijuan He, Jujia Zhang, Siwen Zhou, Wentuan Bi","doi":"10.1002/cctc.71133","DOIUrl":"https://doi.org/10.1002/cctc.71133","url":null,"abstract":"<div>\u0000 \u0000 Pt nanoparticles supported on porous carbon supports are widely used as electrocatalysts in proton exchange membrane fuel cells (PEMFCs), but conventional carbon supports suffer from corrosion and Pt agglomeration, which limit performance and durability. Herein, we address these issues by anchoring Pt nanoparticles on highly ordered Fe-containing N-doped carbon nanofibers (Pt-FeNC). Owing to the flexible, ordered fibrous-membrane architecture and an interfacial electronic interaction between Pt and the Fe─N─C support, charge transport and improves catalyst durability. As a result, Pt-FeNC exhibits high oxygen reduction reaction (ORR) activity, with a half-wave potential of 0.9 V. A membrane electrode assembly (MEA) employing the ordered fibrous membrane as a freestanding cathode delivers an approximately 33% higher peak power density than commercial Pt/C and only a 7.2% performance loss after 30,000 accelerated stress test cycles. The enhanced performance is attributed to the improved durability of the Fe-containing N-doped carbon support and the continuous electron- and mass-transport pathways provided by the interconnected fibrous network.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 21","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312325","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}

引用次数: 0

Pd Nanoparticles Supported on CeVO4 Bimetallic Oxide for Highly Efficient Solvent-Free Selective Oxidation of Benzyl Alcohol by Ambient Oxygen CeVO4双金属氧化物负载的Pd纳米颗粒用于环境氧对苯甲醇的高效无溶剂选择性氧化

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-29 DOI: 10.1002/cctc.71136

Ru-Meng Yu, Lan Zhang, Jie Xu, Bing Xue

{"title":"Pd Nanoparticles Supported on CeVO4 Bimetallic Oxide for Highly Efficient Solvent-Free Selective Oxidation of Benzyl Alcohol by Ambient Oxygen","authors":"Ru-Meng Yu, Lan Zhang, Jie Xu, Bing Xue","doi":"10.1002/cctc.71136","DOIUrl":"https://doi.org/10.1002/cctc.71136","url":null,"abstract":"<div>\u0000 \u0000 Selective oxidation of benzyl alcohol (BZA) using molecular oxygen as the oxidant under solvent-free and atmospheric pressure conditions was a green and promising method for the synthesis of benzaldehyde (BZL). In this study, CeVO4 material was prepared by a coprecipitation method, and Pd/CeVO4 catalysts were then fabricated by an impregnation-reduction method using CeVO4 as a catalyst support and reduction by H2. The characterization results showed that Pd nanoparticles were uniformly dispersed on the surface of the CeVO4 support. The reduction temperature could influence the distributions of two chemical valences of Ce and V cations. In the solvent-free selective oxidation of (BZA), the 2Pd/CeVO4-550 catalyst exhibited excellent catalytic performance, with a (BZA) conversion of 75.5% and a BZL selectivity of 96.2%. Based on the characterization results, the superior activity largely depended on the percentages of Ce3+ and V4+ species, as well as the small size of Pd nanoparticles. Furthermore, the catalyst could be reused five times without a significant decrease in activity, and no leaching of the active component was observed, demonstrating good stability.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 21","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312326","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}

引用次数: 0

Ferrocene and Nitrogen-Rich Triazine Linked Porous Organic Polymers for Efficient and Durable Oxygen Evolution Electrocatalysis 二茂铁和富氮三嗪连接多孔有机聚合物用于高效和持久的析氧电催化

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-26 DOI: 10.1002/cctc.71126

Ahmed F. Saber, Mohamed Gamal Mohamed, Tapomay Mondal, Yang-Chin Kao, Syeda Najaf Zahra, Shiao-Wei Kuo, Mahmoud Abdelnaby

{"title":"Ferrocene and Nitrogen-Rich Triazine Linked Porous Organic Polymers for Efficient and Durable Oxygen Evolution Electrocatalysis","authors":"Ahmed F. Saber, Mohamed Gamal Mohamed, Tapomay Mondal, Yang-Chin Kao, Syeda Najaf Zahra, Shiao-Wei Kuo, Mahmoud Abdelnaby","doi":"10.1002/cctc.71126","DOIUrl":"https://doi.org/10.1002/cctc.71126","url":null,"abstract":"As the rate-determining step in water splitting and related energy systems, the oxygen evolution reaction (OER) demonstrates a main challenge due to its sluggish intrinsic kinetics. Herein, we report, for the first time, the application of ferrocene-integrated porous organic polymers (POPs) supported on nickel foam (NF) as a high-performance electrocatalyst for the OER, exhibiting catalytic activity and efficiency. The Fer-TPT-Ph POP electrocatalyst demonstrates outstanding OER performance under alkaline conditions, requiring a low overpotential of 276 mV to achieve 10 mA cm−2 and 380 mV at 50 mA cm−2, with a Tafel slope of 78 mV dec−1, indicating faster OER kinetics than Fer-TPT POP. Furthermore, the Fer-TPT-Ph POP maintained a nearly constant potential during 48 h of chronoamperometry operation at 10 mA cm−2, thereby confirming its durability under extended OER operation. Electrochemical results show that the improved OER performance of Fer-TPT-Ph POP was accompanied by a lower charge-transfer resistance of 81 Ω, compared with 177 Ω for Fer-TPT POP. The outlined work shows a pioneering effort in the development and exploration of Fer-based POPs in electrocatalysis, marking a significant advance in the field of energy-related catalysis.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 20","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of Alcohol Solvents in Glucose Isomerization and Etherification in Modulated UiO-66 醇类溶剂在UiO-66中葡萄糖异构和醚化反应中的作用

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-26 DOI: 10.1002/cctc.71124

Roshan Patel, Matheus Dorneles de Mello, Tyler R. Josephson, Michael Tsapatsis, J. Ilja Siepmann, Matthew Neurock

{"title":"Role of Alcohol Solvents in Glucose Isomerization and Etherification in Modulated UiO-66","authors":"Roshan Patel, Matheus Dorneles de Mello, Tyler R. Josephson, Michael Tsapatsis, J. Ilja Siepmann, Matthew Neurock","doi":"10.1002/cctc.71124","DOIUrl":"https://doi.org/10.1002/cctc.71124","url":null,"abstract":"Solvent choice significantly affects the rates of glucose isomerization and its selectivity to fructose. Glucose isomerization was examined over modulated UiO-66(Zr) in methanol and 1-propanol solvents. Reactions in 1-propanol favor glucose isomerization to fructose, whereas reactions in methanol favor glucose etherification side reactions to glucosides, which reduces fructose selectivity. The fructose that forms subsequently reacts with both propanol and methanol solvents to form fructosides. Density functional theory calculations examine the key reactions and the important role of solvation in affecting fructose selectivity. The higher hydrogen-bonding acidity provided by the methanol solvation environment, as compared to 1-propanol, stabilizes transition states involving the alkoxide attack on glucose in the etherification pathway. Methanol molecules form a more intimate hydrogen-bonding network thus stabilizing anionic intermediates during reaction. As such, methanol, which is more acidic than propanol, enhances alkoxide-mediated etherification relative to Lewis-acid-catalyzed isomerization. Experiments carried out in mixtures of these alcohols show that methanol-rich environments favor glucose etherification (over isomerization), in contrast to 1-propanol-rich environments favor isomerization. Notably, the calculated free energy differences between isomerization and etherification (+1.0 kcal/mol in methanol and –3.9 kcal/mol in 1-propanol) are consistent with those from kinetic experiments (0.3 kcal/mol in methanol and −2.2 kcal/mol in propanol).","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 20","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71124","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphite Formation From CO2 Electroreduction in a Synergistic Ionic Liquid–Liquid Metal System 协同离子液-液态金属体系中CO2电还原生成石墨

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-23 DOI: 10.1002/cctc.71117

Nasim Afzali, Maedeh Yahyanezhad Gele, William Varroy, Frédéric-Georges Fontaine, Jesse Greener

{"title":"Graphite Formation From CO2 Electroreduction in a Synergistic Ionic Liquid–Liquid Metal System","authors":"Nasim Afzali, Maedeh Yahyanezhad Gele, William Varroy, Frédéric-Georges Fontaine, Jesse Greener","doi":"10.1002/cctc.71117","DOIUrl":"https://doi.org/10.1002/cctc.71117","url":null,"abstract":"Electrochemical CO2 reduction at catalytic liquid metal (LM) surfaces offers a promising route for sustainable carbon conversion, yet suboptimal electrolyte formulations limit its practical implementation. We demonstrate CO2 reduction at a cerium-containing liquid metal (LM-Ce) using, for the first time, an ionic liquid-based electrolyte that combines high CO2 solubility, electrochemical stability, and high solution conductivity. Using 1 M 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMIM-TfO) with 2 M H2O in N,N-dimethylformamide (DMF), and under an applied potential of –1.44 V versus standard hydrogen electrode (SHE), the system achieves a high current density while CO2 reduction to graphite proceeds with an overall faradaic efficiency of 73.2 ± 3.3% and a high degree of graphitization (IG/ID ≈ 5). These results demonstrate that ionic liquids (ILs) function not only as excellent supporting media but may also serve as active and potentially tunable components to improve CO2 reduction rates at LM-Ce interfaces.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 20","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71117","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single Atoms–Metal Clusters/Nanoparticles Synergistic Dual-Site Electrocatalysts for Alkaline Hydrogen Evolution 单原子-金属团簇/纳米颗粒协同双位点电催化剂的碱氢析氢研究

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-10-22 DOI: 10.1002/cctc.71092

Yuhang Peng, Junlin Cai, Hongpu Huang, Xiaohong Wang, Shuifen Xie, Zhaoxiong Xie

{"title":"Single Atoms–Metal Clusters/Nanoparticles Synergistic Dual-Site Electrocatalysts for Alkaline Hydrogen Evolution","authors":"Yuhang Peng, Junlin Cai, Hongpu Huang, Xiaohong Wang, Shuifen Xie, Zhaoxiong Xie","doi":"10.1002/cctc.71092","DOIUrl":"https://doi.org/10.1002/cctc.71092","url":null,"abstract":"<div>\u0000 \u0000 Now a new generation of electrocatalysts featuring the coexistence of single atoms (SAs) and metal clusters/nanoparticles (CLs/NPs) are exhibiting remarkable synergistic effects for alkaline hydrogen evolution reaction (HER). The distinct chemical environments of SAs and CLs/NPs allow for the spatial separation of different reaction steps, boosting alkaline HER synergistically. This review provides a comprehensive account of the advanced SAs-CLs/NPs synergistic electrocatalysts for alkaline HER and anion exchange membrane water electrolysis (AEMWE). We classify these catalysts into four types based on the elemental composition of the active sites and discuss their respective synthetic approaches, with an emphasis on strategies to control the relative loading and spatial proximity of SAs and CLs/NPs. We then present a detailed mechanistic discussion of how synergistic interactions between SAs and CLs/NPs accelerate alkaline HER kinetics, drawing on insights from in situ/operando spectral characterization techniques and density functional theory (DFT) calculations. The performance of these catalysts in AEMWE devices is also evaluated, highlighting the most promising systems for practical application. Finally, we outline the key challenges that must be overcome to realize the full potential of SAs-CLs/NPs synergistic catalysts.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 20","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258258","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}

引用次数: 0