Back to Search Start Over

Using the Interaction between Copper and Manganese to Stabilize Copper Single‐atom for CO Oxidation

Authors :
Mingzhu Jiang
Hongpeng Jia
Jing Chen
Xuelong Lv
Dongxu Yan
Yanxia Gao
Source :
Chemistry – A European Journal. 27:9060-9070
Publication Year :
2021
Publisher :
Wiley, 2021.

Abstract

The interaction between Cu and Mn has been used to immobilize the Cu single-atom on MnO2 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%-Cu1 /MnO2 shows an oxygen storage capacity (OSC) value (342.75 μmol/g) more than ten times that of pure MnO2 (27.79 μmol/g) and has high CO catalytic activity (T90% =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.

Details

ISSN :
15213765 and 09476539
Volume :
27
Database :
OpenAIRE
Journal :
Chemistry – A European Journal
Accession number :
edsair.doi.dedup.....e20f340510fcab2988e2244132184914
Full Text :
https://doi.org/10.1002/chem.202100442