ChemCatChem最新文献_第10页

Core-Shell Structured V-Doped CoPx@FeOOH for Efficient Seawater Electrolysis 核壳结构v掺杂CoPx@FeOOH用于高效海水电解

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-17 DOI: 10.1002/cctc.202500850

Gai Li, Yanhui Yu, Chongtai Wang, Daoxiong Wu, Yingjie Hua, Peng Rao, Xinlong Tian, Jing Li

{"title":"Core-Shell Structured V-Doped CoPx@FeOOH for Efficient Seawater Electrolysis","authors":"Gai Li, Yanhui Yu, Chongtai Wang, Daoxiong Wu, Yingjie Hua, Peng Rao, Xinlong Tian, Jing Li","doi":"10.1002/cctc.202500850","DOIUrl":"10.1002/cctc.202500850","url":null,"abstract":"As a renewable energy conversion method, the hydrogen from seawater electrolysis needs to overcome problems such as chlorination reaction and corrosion resistance. Considering these questions, it is vital to design a highly efficient and corrosion-resistant catalyst. Here, we developed a vanadium-doped cobalt phosphide encapsulated within an iron oxyhydroxide shell (V-CoPx@FeOOH) as an efficient core-shell electrocatalyst for the oxygen evolution reaction (OER) in seawater electrolytes. In particular, the OER overpotential of the V-CoPx@FeOOH catalyst at 100 mA cm−2 was 270 mV. Notably, V-CoPx||V-CoPx@FeOOH was able to operate in alkaline seawater at 500 mA cm−2 for more than 1000 h, showing excellent stability. Density functional theory (DFT) calculations indicate that the enhanced HER activity is attributed to the introduction of V, which strengthens the bonding between Co sites and H atoms, and the optimized OER activity results from the presence of both V and Fe, which together optimize the bonding strength between Co sites and OOH intermediates. The highly efficient catalyst of the core-shell structure has great prospects for overall water/seawater electrolysis.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 18","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101662","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

Donor–Acceptor Covalent Organic Frameworks for Photocatalytic Water Oxidation and Oxygen Reduction Reactions 光催化水氧化和氧还原反应的供体-受体共价有机框架

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-17 DOI: 10.1002/cctc.202501000

Akhtar Alam, Pekham Chakrabortty, Avanti Chakraborty, Samrat Ghosh, Pradip Pachfule

{"title":"Donor–Acceptor Covalent Organic Frameworks for Photocatalytic Water Oxidation and Oxygen Reduction Reactions","authors":"Akhtar Alam, Pekham Chakrabortty, Avanti Chakraborty, Samrat Ghosh, Pradip Pachfule","doi":"10.1002/cctc.202501000","DOIUrl":"10.1002/cctc.202501000","url":null,"abstract":"Covalent organic frameworks (COFs) are considered as the next generation of organic photocatalysts for the conversion of solar energy into fuels or chemicals. Compared to the traditional heterogeneous photocatalysts, COFs have emerged as organic photocatalysts and have been tested for various photocatalytic transformations such as hydrogen evolution, hydrogen peroxide generation, carbon dioxide reduction and organic transformations. In particular, donor–acceptor (D–A) COFs showed enhanced photocatalytic activity, where electron-rich donor (D) and electron-deficient acceptor (A) are alternately arranged in the framework. The high photocatalytic activity of D–A COFs is attributed to the tunable band gap, efficient charge separation and charge transport through the bicontinuous heterojunction. In recent years, several D–A COFs have been reported for photocatalytic reactions, especially tested for photocatalytic generation of hydrogen and hydrogen peroxide involving water oxidation and oxygen reduction reactions. In this review, we have summarized these reports and presented a critical perspective with the fundamental understanding of D–A COFs. In addition, this review discusses the different design principles adopted and the synthesis of crystalline D–A COFs with different linkages and their effect on the photocatalytic efficiency. Finally, this review will provide an overview of the design of D–A COFs for photocatalysis, addressing the challenges and opportunities involved.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 16","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905326","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

Expedient, Directed Ir-Catalyzed Diborylation of (Hetero)Biaryls via a Tridentate Ligand 利用三齿配体催化的（杂）双芳基二硼化反应

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-17 DOI: 10.1002/cctc.202500915

Paul Stehrer, Marko Hapke

引用次数: 0

Thioxanthone: A Benchmark Photocatalyst for Organic Synthesis 硫氧蒽酮：有机合成的基准光催化剂

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-15 DOI: 10.1002/cctc.202500760

Dr. Vera P. Demertzidou, Elpida Skolia, Prof. Christoforos G. Kokotos

引用次数: 0

Iridium-Doped Monoclinic Zirconia as a Catalyst for the Oxygen Evolution Reaction 掺铱单斜氧化锆作为析氧反应的催化剂

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-15 DOI: 10.1002/cctc.202500769

Mathias Stokkebye Nissen, Heine Anton Hansen

{"title":"Iridium-Doped Monoclinic Zirconia as a Catalyst for the Oxygen Evolution Reaction","authors":"Mathias Stokkebye Nissen, Heine Anton Hansen","doi":"10.1002/cctc.202500769","DOIUrl":"10.1002/cctc.202500769","url":null,"abstract":"New acid-stable catalysts that reduce reliance on iridium (Ir) for the oxygen evolution reaction (OER) could pave the way for efficient energy conversion and storage. Using DFT this work investigates Ir-dopings of the monoclinic <math></math> (<math></math>) surface as an Ir-lean OER catalyst. It is found that these Ir-doped surfaces are likely to segregate into their constituent oxide phases, <math></math> and <math></math>. The OER activity is limited due to under binding of the OER intermediates on pure <math></math> and overbinding on the Ir-doped surface, both leading to high overpotentials. Water adsorption on the surface layer stabilizes all surfaces, with a more pronounced stabilization observed for the Ir-doped systems. This adsorption significantly impacts the activity for the nondoped surface, as leaving a surface site unoccupied creates a high energy state in the band gap, making the surface highly reactive. A similar situation is found for an Ir-doped surface, contrasted by the formation of lower energy states.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 18","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202500769","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101282","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

Highly Acyclic Selective Cobalt Catalysts for Butadiene Dimerization 丁二烯二聚的高无环选择性钴催化剂

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-15 DOI: 10.1002/cctc.202500788

Joseph H. P. Cockcroft, Gary S. Nichol, Jarle Holt, Joost Smit, Jennifer A. Garden, Stephen P. Thomas

引用次数: 0

Pd(0)-Catalyzed (3 + 3) Annulation of Vinylcyclopropanes and Boronic Acid Derivatives: A Route to Vinyltetralones Pd(0)催化的乙烯基环丙烷和硼酸衍生物的（3 + 3）环化：乙烯基四酮的一条途径

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-15 DOI: 10.1002/cctc.202500775

Krishna Biswas, Dr. Sourav Mondal, Dr. Venkataraman Ganesh

引用次数: 0

Multiple Adsorption of CO Molecules on Transition Metal Substitutional Impurities in Copper Surfaces 铜表面过渡金属取代杂质对CO分子的多重吸附

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-15 DOI: 10.1002/cctc.202500765

Magnus A. H. Christiansen, Wei Wang, Elvar Ö. Jónsson, Giancarlo Cicero, Hannes Jónsson

{"title":"Multiple Adsorption of CO Molecules on Transition Metal Substitutional Impurities in Copper Surfaces","authors":"Magnus A. H. Christiansen, Wei Wang, Elvar Ö. Jónsson, Giancarlo Cicero, Hannes Jónsson","doi":"10.1002/cctc.202500765","DOIUrl":"10.1002/cctc.202500765","url":null,"abstract":"Copper-based catalysts are of particular interest for electrochemical reduction of <math></math> (CO2RR) as products beyond CO can form. To improve activity and selectivity, several studies have focused on the addition of other elements as substitutional impurities. Although the adsorption of a single CO molecule has often been used as a descriptor for CO2RR activity, our recent calculations using the RPBE functional showed that multiple CO molecules can bind to first-row transition metal impurities. Here, we extend the study to second-row transition metals and also to a functional that explicitly includes dispersion interaction, BEEF-vdW. The binding energy of the first CO molecule on the impurity atom is found to be significantly larger than on the clean Cu(111) and Cu(100) surfaces, but the differential binding energy generally drops as more CO molecules adsorb. The dispersion interaction is found to make a significant contribution to the binding energy, in particular for the last and weakest bound CO molecule, the one that is most likely to participate in CO2RR. In some cases, four CO admolecules can bind more strongly on the impurity atom than on the clean copper surface. The adsorption of CO causes the position of the impurity atom to shift outwards and in some cases, even escape from the surface layer. The C─O stretch frequencies are calculated in order to identify possible experimental signatures of multiple CO adsorption.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 18","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101298","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

Electrocatalytic Urea Synthesis via C─N Coupling: Catalyst Design and Mechanistic Insights 通过C─N偶联的电催化尿素合成：催化剂设计和机理的见解

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-15 DOI: 10.1002/cctc.202500779

Jinjie Zhuang, Jing Song, Wei Shi, Jiaying Tian, Xinxin Kong, Lu Lu, Peiyong Qin

{"title":"Electrocatalytic Urea Synthesis via C─N Coupling: Catalyst Design and Mechanistic Insights","authors":"Jinjie Zhuang, Jing Song, Wei Shi, Jiaying Tian, Xinxin Kong, Lu Lu, Peiyong Qin","doi":"10.1002/cctc.202500779","DOIUrl":"10.1002/cctc.202500779","url":null,"abstract":"Electrocatalytic urea synthesis has emerged as a promising green strategy for sustainable nitrogen and carbon utilization, which is achieved by coupling CO₂ with small nitrogenous molecules (e.g., N₂, NO₃⁻, NO₂⁻) to form C─N bonds under mild conditions. This review systematically summarizes recent research advances in electrocatalytic urea synthesis, with a focus on catalyst design strategies, reaction mechanisms, and performance optimization. First, diverse catalytic synthesis approaches, such as vacancy engineering, heteroatom doping, crystal facet engineering, atomic-scale modulation, alloying, and heterostructure construction are analyzed to assess their impact on catalytic activity, selectivity, and stability. Then, mechanistic insights into C─N coupling reactions are discussed, including key reaction intermediates, proton-coupled electron transfer processes, and the influence of catalytic active sites on product selectivity. Next, advanced characterization techniques and detection methods for the precise quantification of urea are reviewed. Finally, future challenges and opportunities in electrocatalytic urea synthesis are highlighted. This review aims to provide a comprehensive understanding of electrocatalytic urea synthesis and to guide the rational design of efficient catalysts, thereby accelerating the development of sustainable urea production.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 16","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905347","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

Group I tert-Amylates: A Comparative Study in Hydrophosphination Reactions I族叔戊酯：氢膦化反应的比较研究

IF 3.9 3区化学

ChemCatChem Pub Date : 2025-07-15 DOI: 10.1002/cctc.202500752

Dr. Diego R. Javier-Jiménez, Dr. Matthew B. Reuter, Emma J. Finfer, Gavin A. Sicard, Prof. Dr. Rory Waterman

引用次数: 0