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Using the Interaction between Copper and Manganese to Stabilize Copper Single‐atom for CO Oxidation
- 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.
- Subjects :
- chemistry.chemical_classification
Reactive oxygen species
010405 organic chemistry
Organic Chemistry
Inorganic chemistry
chemistry.chemical_element
General Chemistry
Manganese
010402 general chemistry
01 natural sciences
Copper
Catalysis
0104 chemical sciences
chemistry.chemical_compound
Hydrolysis
chemistry
Catalytic oxidation
Atom
Carbon monoxide
Subjects
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