摘要
The influence of doping lanthana on valent state of CeO_(2) surface has been studied by using x-ray photoelectron spectrascopy It was found that La^(3+) doping in host CeO_(2) lattice can promote to convert Ce^(4+) into Ce^(3+) and enhance adsorbing-carbonyl capacity of the materials.However,the inversion of Ce^(4+) to Ce^(3+) is depressed by dopant La^(3+) during argon ion bombardment.
作者
DU Xue-yan
LI Wen-chao
LIU Zhen-xiang
XIE Kan
杜雪岩;李文超;刘振祥;谢侃(Institute of Physics,Chinese Academy of Sciences,Beijing 100080;Department of Physical Chemistry,University of Science and Technology,Beijing 100083)
基金
Supported by the National Natural Science Foundation of China under Grant No.19874077
Ph.D.Educational Fund.
