Microenvironment modulation of single-atom catalysts and their roles in electrochemical energy conversion.
Microenvironment modulation of single-atom catalysts and their roles in electrochemical energy conversion.
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DOI：
10.1126/sciadv.abb6833
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发表时间：
2020-09
期刊：
影响因子：
13.6
通讯作者：
Liu B
中科院分区：
文献类型：
--
作者：
Li X;Liu L;Ren X;Gao J;Huang Y;Liu B
单原子催化剂的微环境工程为有效的电化学能量转换铺平了道路。单原子催化剂已成为多相催化领域最具吸引力的前沿研究领域。由于原子分散的金属原子通常通过与相邻原子的离子/共价相互作用来稳定，SAC的几何和电子结构在很大程度上取决于它们的微环境，这反过来又决定了催化过程中的性能。本文综述了近年来SAC的合成策略，重点介绍了SAC单原子活性中心的微环境调控。此外，实验和计算的进展，了解这种微环境与催化活性和机制的总结和例证的电化学应用，包括水电解和O2/CO2/N2还原反应。最后，通过对活性炭微环境工程的展望和挑战，对活性炭在电化学能量转换方面的进一步发展提出了一些建议。
Microenvironment engineering of single-atom catalysts paves the way toward efficient electrochemical energy conversion. Single-atom catalysts (SACs) have become the most attractive frontier research field in heterogeneous catalysis. Since the atomically dispersed metal atoms are commonly stabilized by ionic/covalent interactions with neighboring atoms, the geometric and electronic structures of SACs depend greatly on their microenvironment, which, in turn, determine the performances in catalytic processes. In this review, we will focus on the recently developed strategies of SAC synthesis, with attention on the microenvironment modulation of single-atom active sites of SACs. Furthermore, experimental and computational advances in understanding such microenvironment in association to the catalytic activity and mechanisms are summarized and exemplified in the electrochemical applications, including the water electrolysis and O2/CO2/N2 reduction reactions. Last, by highlighting the prospects and challenges for microenvironment engineering of SACs, we wish to shed some light on the further development of SACs for electrochemical energy conversion.
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