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中国科学:化学（英文版）
中国科学:化学（英文版）

周光召

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1674-7291

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中国科学:化学（英文版）/Journal Science China(Chemistry)CSCDCSTPCDEISCI
查看更多>>《中国科学》是中国科学院主办、中国科学杂志社出版的自然科学专业性学术刊物。《中国科学》任务是反映中国自然科学各学科中的最新科研成果，以促进国内外的学术交流。《中国科学》以论文形式报道中国基础研究和应用研究方面具有创造性的、高水平的和有重要意义的科研成果。在国际学术界，《中国科学》作为代表中国最高水平的学术刊物也受到高度重视。国际上最具有权威的检索刊物SCI，多年来一直收录《中国科学》的论文。1999年《中国科学》夺得国家期刊奖的第一名。
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    Fostering a growing chemistry community:the 2024 emerging investigator issue of Science China Chemistry

    Li-Jun Wan
    3897-3905页
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    Functionalization of covalent organic frameworks via multicomponent reactions

    Xue-Hui LiuPeng-Lai WangWei WangSan-Yuan Ding...
    3906-3914页
    查看更多>>摘要：Functionalized covalent organic frameworks(COFs)represent a fascinating class of porous materials that have attracted widespread interest due to their modifiable structures and impressive potential applications.However,the construction of functionalized COFs remains difficult as it requires simultaneous consideration of robust linkages,diversified structures,and tailorable functionalities.Recently,the introduction of multicomponent reactions(MCRs)into COF synthesis opens new avenues for creating highly stable and function-oriented COF materials,marking a significant advance in the development of COFs.This minireview summarizes the types of MCRs used in COF synthesis,highlights the functionalization strategies of COFs via MCRs,and provides insights on the key challenges and future frontiers in this field.
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    Mechanochemistry of cyclobutanes

    Roberto ObregonJunpeng Wang
    3915-3924页
    查看更多>>摘要：The field of polymer mechanochemistry has been revolutionized by implementing force-responsive functional groups—mechanophores.The rational design of mechanophores enables the controlled use of force to achieve constructive molecular reactivity and material responses.While a variety of mechanophores have been developed,this Mini Review focuses on cyclobutane,which has brought valuable insights into molecular reactivity and dynamics as well as innovations in materials.We discuss its reactivity and mechanism,dynamics and stereoselectivity,as well as impacts on material properties.
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    Applications of in-situ spectroscopic techniques towards CO2 electroreduction

    Haoyu ZhangChaoyue GuMinghui FanZhi Zhao...
    3925-3933页
    查看更多>>摘要：In-situ experimental techniques have been widely applied to uncover the dynamic evolutions of both the structure of catalysts and the interfacial property of catalysis,thus serving as the most important means to gain molecular-level insights into the reaction mechanisms.In this mini review,we summarized recent progress in the applications of the interface-sensitive in-situ Raman and in-situ infrared(IR)spectroscopy towards CO2 electroreduction.Specifically,we concentrated on two aspects to clarify the role of both in-situ Raman and in-situ IR in revealing reaction mechanisms of CO2 electroreduction.The first one was the in-situ spectroscopy for detecting the active structures.The other one was the in-situ spectroscopy for capturing the reaction intermediates.As powerful guidance for the rational design of catalysts,the reaction mechanism was discussed in the specific examples.Finally,we try to predict the trends for the future development of in-situ spectroscopic techniques towards hetero-geneous catalysis.
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    Recent progress in the deactivation mechanism of zeolite catalysts in methanol to olefins

    Sheng FanHan WangSen WangMei Dong...
    3934-3943页
    查看更多>>摘要：Methanol to olefins(MTO)as an important reaction in C1 chemistry can effectively transform non-petroleum carbon resources into value-added chemicals.Zeolites have been widely used as MTO catalysts.However,they usually suffer from a rapid deactivation due to bulky coke species production,and thus require continuous regenerations in industrial application.The key to design and develop highly stable zeolite catalysts for MTO process is to unravel the deactivation mechanism and clarify the structure-performance relationship of catalysts.Here,in this mini-review,we investigate the critical intermediate species inducing zeolite deactivation and analyze the formation and evolution pathways of polycyclic aromatic hydrocarbons(PAHs)that are the precursors of carbonaceous deposits.In addition,some methods to alleviate the coking mainly including acid regulation,morphology modification and process optimization,are also summarized.
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    Upgrading ethylene via renewable energy-driven electrocatalysis

    Hanyu WangDunfeng GaoGuoxiong WangXinhe Bao...
    3944-3951页
    查看更多>>摘要：Ethylene oxide(EO)and ethylene glycol(EG)are two important commodity chemicals and are industrially produced from petroleum-derived ethylene via thermocatalytic processes.The overoxidation of ethylene and the implementation of high temperature and pressure lead to substantial CO2 emission.Renewable energy-driven electrocatalysis provides a low-carbon route for upgrading ethylene under mild conditions,especially when it couples with ethylene electrosynthesis from CO2·In this minireview,we summarize recent achievements in the selective electrocatalytic oxidation of ethylene to EO and EG.Three main reaction routes including direct electrocatalytic oxidation with water,indirect electrocatalytic oxidation with halide mediators,and tandem electrocatalytic and thermocatalytic oxidation with hydrogen peroxide intermediate,are discussed.Some re-presentative catalyst systems and reactor designs are exemplified.We discuss the existing scientific and technical challenges of electrocatalytic ethylene upgrading in terms of reaction rate,selectivity,and long-term stability,and propose future research directions and opportunities for pushing the process towards practical application.
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    Recent advancements and perspectives of fast-charging composite anodes for lithium-ion batteries

    Qinghui ZengYongteng DongYuanmao ChenXinyang Yue...
    3952-3963页
    查看更多>>摘要：The escalating demand for fast-charging lithium-ion batteries(LIBs)has mirrored the rapid proliferation and widespread adoption of electric vehicles and portable electronic devices.Nonetheless,the sluggish diffusion kinetics of lithium ions and electrode degradation in conventional graphite-based anodes pose formidable hurdles in achieving optimal fast-charging cap-abilities for LIBs.To overcome these challenges,the innovative concept of fast-charging composite anodes,a paradigm shift from traditional single-component designs,has emerged as a promising avenue to enhance the overall performance of LIBs under rapid charging conditions.This paper provides a comprehensive review of the recent advancements in fast-charging composite anodes for LIBs,with a pivotal emphasis on the design principles and material selection strategies employed in various composite anode formulations.Furthermore,it outlines the future prospects and research trajectories in this burgeoning field,offering insights into potential breakthroughs and directions for further exploration.
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    Electrochemical impedance spectroscopy analysis to accelerate electrocatalytic system innovation

    Hanbing ZhuYinghuan LiuWenxin GuoJinyu Zheng...
    3964-3975页
    查看更多>>摘要：Electrochemical impedance spectroscopy(EIS)is a well-established non-destructive characterization technique for assessing the efficacy of electrochemical energy storage and conversion systems.Electrocatalytic systems based on proton exchange mem-brane(PEM),including PEM fuel cells and PEM water electrolyzers,play a crucial role in renewable energy conversion through electricity-hydrogen interconversion.EIS,along with its derived analysis methods—equivalent circuit model(ECM),dis-tribution of relaxation time(DRT),and dynamic EIS(DEIS),is widely utilized to extract valuable kinetics and impedance data.The acquired information affords critical insights into processes such as mass transfer,charge transfer,and proton transfer within PEM systems.This mini review surveys the role of EIS in optimizing components and investigating operational conditions to enhance the efficiency of PEM systems.In addition,it encapsulates the principles and applications of EIS-based methods like DRT and DEIS,highlighting their potential in the practical application of PEM systems.
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    Molecular catalysts for electrocatalytic ammonia oxidation

    Jun LjFeiyang ZhangHuatian XiongYuanyuan Cai...
    3976-3993页
    查看更多>>摘要：Electrocatalytic ammonia oxidation reaction(eAOR)is of significance to ammonia fuel economy and the production of valuable N-containing products,such as nitrite,nitrate and hydrazine.The study of well-defined molecular catalysts offers rich insights in terms of the detailed mechanism of ammonia oxidation.This review analyzes the thermodynamics of ammonia oxidation reactions and summarizes the current progress in molecular electrocatalysts in this booming field.We emphasized the factors that influence the selectivity of products and further discussed the challenges in designing efficient catalysts.
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    Progress of photocatalytic CO2 reduction toward multi-carbon products

    Jiaojiao FangChengyang ZhuHuiling HuJiaqi Li...
    3994-4013页
    查看更多>>摘要：The photocatalytic CO2 reduction reaction(CO2RR)represents a promising solution to alleviate environmental and energy issues stemming from CO2 emissions while simultaneously enabling the production of high-value multi-carbon fuels.However,the efficient generation of multi-carbon products remains challenging due to high kinetic barriers,sluggish C-C coupling processes,and intricate reaction pathways.This review provides a comprehensive overview of the latest advancements in synthesizing C2+products through CO2 photoreduction,highlighting the crucial role of active site design and the C-C coupling mechanism.Specifically,we emphasize the correlation between the structure of active sites and the key intermediates of C-C coupling,which is fundamental for achieving deep photoconversion of CO2.Finally,we offer a glimpse into future challenges and prospects,outlining potential directions for the development of CO2-to-multicarbon photoconversion,aiming to contribute novel insights to this exciting field.
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