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Using the Interaction between Copper and Manganese to Stabilize Copper Single‐atom for CO Oxidation.
Author(s) -
Jiang Mingzhu,
Chen Jing,
Gao Yanxia,
Lv Xuelong,
Yan Dongxu,
Jia Hongpeng
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202100442
Subject(s) - catalysis , copper , manganese , carbon monoxide , redox , chemistry , transition metal , atom (system on chip) , oxygen , inorganic chemistry , oxygen storage , metal , organic chemistry , computer science , embedded system , biochemistry
The interaction between Cu and Mn has been used to immobilize the Cu single‐atom on MnO 2 surface by redox‐driven hydrolysis. Comprehensive structure and property characterizations demonstrate that the existence of an Cu−Mn interaction on the catalyst surface can effectively restrain the aggregation of Cu single atoms and improve carbon monoxide (CO) oxidation activity. The interaction of forming the Cu−O−Mn entity is beneficial for CO catalytic activity as the migration of reactive oxygen species and the coordination effect of active centers accelerate the reaction. In particular, 3%‐Cu 1 /MnO 2 shows an oxygen storage capacity (OSC) value (342.75 μmol/g) more than ten times that of pure MnO 2 (27.79 μmol/g) and has high CO catalytic activity ( T 90% =80 °C), it can maintain CO conversion of 95 % after 15 cycles. This work offers a reliable method for synthesizing Cu single‐atom catalysts and deepens understanding of the interaction effect between single transition metal atoms and supports that can improve the catalytic activity of CO oxidation.