Chem Catalysis最新文献

Carbene-mediated photocatalytic ethanol synthesis by frustrated Lewis pairs 受阻路易斯对催化卡宾介导的光催化乙醇合成

IF 9.4

Chem Catalysis Pub Date : 2025-05-15 DOI: 10.1016/j.checat.2025.101385

Linqun Yu, Song Li, Zhenyi Zhang

引用次数: 0

Boosting hole mobility in oxides via metal vacancies 通过金属空位提高氧化物的空穴迁移率

IF 9.4

Chem Catalysis Pub Date : 2025-05-15 DOI: 10.1016/j.checat.2025.101391

Fatwa F. Abdi

引用次数: 0

Viologen-COF enables near-infrared photocatalysis via linker-to-linker charge transfer Viologen-COF通过连接体之间的电荷转移实现近红外光催化

IF 9.4

Chem Catalysis Pub Date : 2025-05-15 DOI: 10.1016/j.checat.2025.101395

Yuting Liu, Xiaokun Shi, Xin Chen, Ya Du

引用次数: 0

Nitrite to amine in one pot 亚硝酸盐到胺在一个锅里

IF 9.4

Chem Catalysis Pub Date : 2025-05-15 DOI: 10.1016/j.checat.2025.101384

Chen Chen, Ning Yan

引用次数: 0

Challenges of characterizing degradation in hydrogen polymer electrolyte fuel cells 表征氢聚合物电解质燃料电池降解的挑战

IF 9.4

Chem Catalysis Pub Date : 2025-05-15 DOI: 10.1016/j.checat.2025.101387

Andrea Baricci, Elena Colombo, Andrea Mattera

引用次数: 0

Waste oxidation as a pathway to energy-efficient electrochemical processes 废物氧化是实现节能电化学过程的途径

IF 9.4

Chem Catalysis Pub Date : 2025-05-14 DOI: 10.1016/j.checat.2025.101392

Emilly Cristine de Brito Dorneles, Kirsten Van Fossen, Anna Li, Magda Helena Barecka

引用次数: 0

Polyaniline-supported copper nanocrystals for electrochemical CO2 reduction to methane 聚苯胺负载的铜纳米晶电化学CO2还原为甲烷

IF 9.4

Chem Catalysis Pub Date : 2025-05-12 DOI: 10.1016/j.checat.2025.101389

Rong Chen, Jing Gao, Shuangte Zhao, Hongguang Wang, Guilin Zhuang, Peter A. van Aken, Michael Grätzel, Jingshan Luo

{"title":"Polyaniline-supported copper nanocrystals for electrochemical CO2 reduction to methane","authors":"Rong Chen, Jing Gao, Shuangte Zhao, Hongguang Wang, Guilin Zhuang, Peter A. van Aken, Michael Grätzel, Jingshan Luo","doi":"10.1016/j.checat.2025.101389","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101389","url":null,"abstract":"Achieving industrial electrochemical CO2 reduction necessitates the strategic design of electrocatalysts with high activity, superior selectivity, and excellent stability. Herein, we developed spatially dispersed copper nanocrystals supported by polyaniline (PANI-CuNCs) for electrochemical CO2 reduction, achieving a faradaic efficiency of 68.6% ± 2.2% toward methane at −300 mA cm−2. The chelation of the Cu precursor within the oxidized emeraldine base (EB) is crucial for forming isolated CuNCs. The PANI substrate facilitates proton shuttling to Cu(111) sites, enhancing methane production by promoting protonation and reducing ∗CO coverage. In situ Raman and theoretical calculations show that PANI improves CO2 adsorption and activation by creating a hydrophilic environment, highlighting its potential for industrial CO2 reduction electrocatalysis. Our work introduced a promising strategy that utilizes polymers as substrates to prepare well-dispersed NCs for electrocatalysis, highlighting the potential of such systems in advancing the field of industrial electrochemical CO2 reduction.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"28 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933520","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}

引用次数: 0

Modular silver catalysts to elucidate the role of non-covalent interactions in asymmetric C‒H amidation reactions 模块银催化剂阐明非共价相互作用在不对称C-H酰胺化反应中的作用

IF 9.4

Chem Catalysis Pub Date : 2025-05-12 DOI: 10.1016/j.checat.2025.101388

Emily Z. Schroeder, Jed H. Kim, Yue Fu, Wentan Liu, Peng Liu, Jennifer M. Schomaker

{"title":"Modular silver catalysts to elucidate the role of non-covalent interactions in asymmetric C‒H amidation reactions","authors":"Emily Z. Schroeder, Jed H. Kim, Yue Fu, Wentan Liu, Peng Liu, Jennifer M. Schomaker","doi":"10.1016/j.checat.2025.101388","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101388","url":null,"abstract":"Chiral, non-racemic amines and aminoalcohols are common structural motifs in bioactive molecules. Asymmetric nitrene transfer offers a powerful approach to prepare enantioenriched amines directly from abundant C–H bonds; however, the development of general, cost-effective catalysts supported by easily tunable ligands remains a significant challenge. Herein, we report that Ag salts coordinated with unique bis(oxazoline) ligands catalyze site- and enantioselective nitrene transfer into benzylic, allylic, and unactivated C–H bonds of carbamate esters. This method provides 1,3-aminoalcohols in high yields with enantiomeric excess (ee) of up to 98%. Computations were used to rationalize key features influencing the observed stereochemical outcomes. Analysis of the enantiodetermining transition states revealed that high ee arises from a preferred square-planar geometry at the silver nitrene and stabilizing C–H/π interactions between the ligand and substrate. These features enable broad substrate scope and high chemo-, site-, and enantioselectivity in Ag-catalyzed C–H bond amidations via nitrene transfer.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"31 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933457","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}

引用次数: 0

Efficient photosynthesis of H2O2 over β-ZrNBr nitrohalide nanosheets H2O2在β-ZrNBr氮化卤化物纳米片上的高效光合作用

IF 9.4

Chem Catalysis Pub Date : 2025-05-12 DOI: 10.1016/j.checat.2025.101386

Yunfeng Bao, Jingzhen Zhang, Shiwen Du, Sanlue Hu, Yejun Xiao, Zhaochi Feng, Fuxiang Zhang

{"title":"Efficient photosynthesis of H2O2 over β-ZrNBr nitrohalide nanosheets","authors":"Yunfeng Bao, Jingzhen Zhang, Shiwen Du, Sanlue Hu, Yejun Xiao, Zhaochi Feng, Fuxiang Zhang","doi":"10.1016/j.checat.2025.101386","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101386","url":null,"abstract":"Inorganic mixed-anion semiconductor photocatalysts are promising for water splitting due to their broad visible light absorption and structural stability. However, efficient photocatalytic production of hydrogen peroxide (H2O2) remains challenging. This study reports a one-step photocatalytic method for H2O2 production using the synthesized β-ZrNBr inorganic nanosheet photocatalyst, achieving an apparent quantum efficiency of 11.7% at 420 ± 10 nm and a solar-to-H2O2 efficiency of 0.5%. This superior H2O2 synthesis performance is attributed to efficient carrier mobility, high bulk charge carrier separation efficiency exceeding 70%, and the ability to directly promote water oxidation into H2O2. Additionally, 600 μmol L−1 gcat−1 of H2O2 can be continuously generated over the β-ZrNBr film without significant decay under visible light in a homemade flow cell. Our work offers a scalable alternative for H2O2 production using robust inorganic semiconductors under ambient conditions.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"2 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933521","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}

引用次数: 0

Amine modification enables selective CO2 electroreduction to ethanol via coupling of carbon-containing intermediates 胺改性使选择性二氧化碳电还原乙醇通过偶联的含碳中间体

IF 9.4

Chem Catalysis Pub Date : 2025-05-05 DOI: 10.1016/j.checat.2025.101383

Sheng Chang, Jing Gao, Yimin Xuan, Di Li, Kui Wang

{"title":"Amine modification enables selective CO2 electroreduction to ethanol via coupling of carbon-containing intermediates","authors":"Sheng Chang, Jing Gao, Yimin Xuan, Di Li, Kui Wang","doi":"10.1016/j.checat.2025.101383","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101383","url":null,"abstract":"Electrochemical CO2-to-ethanol conversion faces challenges due to competing ethylene formation. We demonstrate a strategy steering selectivity toward ethanol by modifying copper nanowires with N,N,N′,N′-tetramethylethylenediamine (TMe). The TMe-Cu catalyst achieved a remarkable ethanol faradaic efficiency of ∼58.8 at −0.97 V vs. RHE in H cells. Implementation in an alkaline flow electrolyzer yielded an ethanol partial current density of −216.2 mA cm−2. Combined experimental and computational analyses revealed that TMe modification creates an aerophilic-hydrophobic interface boosting CO2 adsorption and increasing ∗CO intermediate coverage on Cu active sites. In situ spectroscopic studies and controlled experiments identify an ethanol formation pathway involving asymmetric ∗CO–∗CHx coupling followed by ∗OCH2CH3 reduction, while completely suppressing ethylene generation. This work provides mechanistic insights into steering C–C coupling pathways through microenvironment engineering, offering a promising approach for sustainable multi-carbon alcohol synthesis from CO2.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"68 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143910782","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}

引用次数: 0