期刊
MATERIALS RESEARCH BULLETIN
卷 46, 期 11, 页码 2084-2089出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2011.06.033
关键词
Composites; Semiconductors; Chemical synthesis; Catalytic properties
资金
- 973 Basic Research Foundation of China [2006CB932605]
- BTBU
In this paper, Cu2O particle-deposited TiO2 nanobelts with p-n semiconductor heterojunction structure were successfully prepared via a two-step preparation process to investigate electron-transfer performance between p-type Cu2O and n-type TiO2. Various measurement results confirm that the amount of pure Cu2O submicroparticles, with diameters within the range of 200-400 nm and deposited on the surface of TiO2 nanobelts, can be controlled, and that the purity of Cu2O is heavily affected by reaction time. Visible-light photodegradation activities of Rhodamine B show that photocatalysts have little or no photocatalytic activities mainly due to their p-n heterojunction structure, indicating that there hardly appears any electron-transfer from Cu2O to TiO2. (C) 2011 Elsevier Ltd. All rights reserved.
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