Oxygen vacancy clusters promoting reducibility and activity of ceria nanorods.
CeO(2) is a catalytic material of exceptional technological importance, and the precise role of oxygen vacancies is crucial to the greater understanding of these oxide materials. In this work, two ceria nanorod samples with different types and distributions of oxygen vacancies were synthesized. A direct relationship between the concentration of the larger size oxygen vacancy clusters and the reducibility/reactivity of nanosized ceria was revealed. These results may be an important step in understanding and designing active sites at the surface of metal oxide catalytic materials.
Liu
Xiangwen
X
College of Chemistry and Chemical Engineering, Graduate University of the Chinese Academy of Sciences, Beijing, 100049, PR China.
Zhou
Kebin
K
Wang
Lei
L
Wang
Baoyi
B
Li
Yadong
Y
D002563:Cerium / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
D002563:Cerium; C030583:ceric oxide; D010100:Oxygen