ACS Central Science
16 June 2022
Defect Engineering of Ceria Nanocrystals for Enhanced Catalysis via a High-Entropy Oxide Strategy
Yifan Sun1,2, Tao Wu3, Zhenghong Bao1, Jisue Moon1, Zhennan Huang4, Zitao Chen4, Hao Chen5, Meijia Li1, Zhenzhen Yang1, Miaofang Chi4, Todd J. Toops,6 Zili Wu1,4, De-en Jiang3, Jue Liu7,*, Sheng Dai1,5,*
1 Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
2 Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
3 Department of Chemistry, University of California, Riverside, California 92521, United States.
4 Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
5 Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, United States.
6 Buildings and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
7 Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
10.1021/acscentsci.2c00340
Defect engineering of ceria nanocrystals through building atomically thin high-entropy oxide layers has been demonstrated. Increased covalency of the transition metal–oxygen bonds facilitates the formation of surface oxygen vacancies, enabling efficient activation and utilization of surface lattice oxygen for enhanced CO oxidation capabilities.
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