Macro/Micro-Environment Regulating Carbon-Supported Single-Atom Catalysts for Hydrogen/Oxygen Conversion Reactions

被引：60

作者：

Huo, Juanjuan ^{[1
,2
]}

Shen, Ziyan ^{[1
]}

Cao, Xianjun ^{[1
]}

Li, Lu ^{[1
]}

Zhao, Yufei ^{[1
]}

Liu, Hao ^{[1
,3
,4
]}

Wang, Guoxiu ^{[4
]}

机构：

[1] Shanghai Univ, Sch Environm & Chem Engn, Joint Int Lab Environm & Energy Frontier Mat, Shanghai 200444, Peoples R China

[2] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China

[3] Zhengzhou Univ, Minist Educ, Key Lab Mat Proc & Mold, Zhengzhou 450002, Peoples R China

[4] Univ Technol Sydney, Fac Sci, Ctr Clean Energy Technol, Sydney, NSW 2007, Australia

来源：

SMALL | 2022年 / 18卷 / 32期

基金：

澳大利亚研究理事会;

关键词：

hydrogen conversion reaction; macro; micro-environment; oxygen conversion reaction; single-atom catalysts; OXYGEN REDUCTION CATALYSIS; N-C CATALYST; HIGH-PERFORMANCE; IRON CATALYSTS; POROUS CARBON; ACTIVE-SITES; EFFICIENT; EVOLUTION; ELECTROCATALYSTS; GRAPHENE;

D O I：

10.1002/smll.202202394

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Single-atom catalysts (SACs) have attracted tremendous research interest due to their unique atomic structure, maximized atom utilization, and remarkable catalytic performance. Among the SACs, the carbon-supported SACs have been widely investigated due to their easily controlled properties of the carbon substrates, such as the tunable morphologies, ordered porosity, and abundant anchoring sites. The electrochemical performance of carbon-supported SACs is highly related to the morphological structure of carbon substrates (macro-environment) and the local coordination environments of center metals (micro-environment). This review aims to provide a comprehensive summary on the macro/micro-environment regulating carbon-supported SACs for highly efficient hydrogen/oxygen conversion reactions. The authors first summarize the macro-environment engineering strategies of carbon-supported SACs with altered specific surface areas and porous properties of the carbon substrates, facilitating the mass diffusion kinetics and structural stability. Then the micro-environment engineering strategies of carbon-supported SACs are discussed with the regulated atomic structure and electronic structure of metal centers, boosting the catalytic performance. Insights into the correlation between the co-boosted effect from the macro/micro-environments and catalytic activity for hydrogen/oxygen conversion reactions are summarized and discussed. Finally, the challenges and perspectives are addressed in building highly efficient carbon-supported SACs for practical applications.

引用

页数：31

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