Metal oxides confine single atoms toward efficient thermal catalysis
Metal oxides confine single atoms toward efficient thermal catalysis
复制标题
金属氧化物将单原子限制，助力高效热催化
DOI：
10.1016/j.ccr.2023.215189
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发表时间：
2023
影响因子：
20.6
通讯作者：
M. Humayun;M. Israr;Zhishan Li;Wei‐hui Luo;Chundong Wang
中科院分区：
文献类型：
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作者：
M. Humayun;M. Israr;Zhishan Li;Wei‐hui Luo;Chundong Wang
单原子催化剂(SACs)以其较高的原子级利用率和良好的热催化活性和选择性而受到材料学家的关注。金属氧化物因其组成和结构的灵活性以及在高温下催化过程中的稳定性而成为锚定单原子的可行支架材料中最具吸引力的候选材料之一。因此，人们一直致力于制备限制单原子的金属氧化物用于热催化应用。综述了在热催化反应中限制单原子的金属氧化物的广泛知识。首先介绍了SACS的热催化氧化机理，然后综述了热催化在选择性加氢、甲烷氧化、一氧化碳氧化、NOx转化、醇氧化和水煤气变换反应中的应用。最后，对进一步提高SACS的催化活性和选择性进行了总结和展望。
Single-atom catalysts (SACs) have drawn the attention of material scientists due to their high atomic-scale utilization efficiency and excellent thermal catalytic activity and selectivity. Metal oxides stand out as one of the most appealing candidates among the viable scaffold materials for anchoring single atoms due to their compositional and structural flexibility and stability during the catalytic process even at high temperatures. Thus, enormous efforts have been devoted to preparing metal oxides that confine single atoms for thermal catalytic applications. This review summarizes extensive knowledge of metal oxides that confine single atoms in thermal catalytic reactions. The mechanisms of thermal catalytic oxidation over SACs are described first, followed by a review of thermal catalytic applications in selective hydrogenation, methane oxidation, carbon monoxide oxidation, NOxconversion, alcohol oxidation, and water gas shift reaction. Finally, conclusions and future perspectives for improving the catalytic activity and selectivity of SACs are well stated.