期刊
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
卷 85, 期 -, 页码 259-263出版社
ELSEVIER
DOI: 10.1016/j.physe.2016.09.008
关键词
Anatase TiO2; Density functional theory; Surface energy; Optical properties
资金
- National Natural Science Foundation of China [21376199, 51002128]
- Natural Science Foundation of Hunan Province [2015JJ3115]
- Scientific Research Foundation of Education Department of Hunan Province [14B174]
- China Scholarship Council (CSC) [201408430088]
Structure and physical properties of anatase TiO2 (101) surface doped with copper have been studied by using density functional theory. Results show that Cu@Ti and Cu@O systems behave as p and n type semiconductors, respectively. Anatase TiO2 (101) surface exhibits a blue shift in optical absorption spectra compared with pure TiO2 bulk materials. Enhanced photocatalytic activity at wavelength around 400 nm could be contributed by the change in electronic structure. (C) 2016 Elsevier B.V. All rights reserved.
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