Facile fabrication of p-n heterojunctions for Cu{sub 2}O submicroparticles deposited on anatase TiO{sub 2} nanobelts
- College of Science, Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048 (China)
- Department of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang 471023 (China)
Graphical abstract: Cu{sub 2}O particle-deposited TiO{sub 2} nanobelts with p-n semiconductor heterojunction structure were successfully prepared via two-step preparation process, and their visible-light photodegradation activities of Rhodamine B were investigated in detail. Highlights: {yields} Cu{sub 2}O particle-deposited TiO{sub 2} nanobelts mainly with diameters in a range of 200-400 nm were successfully prepared. {yields} The amount of Cu{sub 2}O particles deposited on TiO{sub 2} nanobelts can be tuned. {yields} The composite structure with Cu{sub 2}O particles and TiO{sub 2} nanobelts exhibits p-n semiconductor heterojunction performance. {yields} Photocatalytic properties of such composites. -- Abstract: In this paper, Cu{sub 2}O particle-deposited TiO{sub 2} nanobelts with p-n semiconductor heterojunction structure were successfully prepared via a two-step preparation process to investigate electron-transfer performance between p-type Cu{sub 2}O and n-type TiO{sub 2}. Various measurement results confirm that the amount of pure Cu{sub 2}O submicroparticles, with diameters within the range of 200-400 nm and deposited on the surface of TiO{sub 2} nanobelts, can be controlled, and that the purity of Cu{sub 2}O 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 Cu{sub 2}O to TiO{sub 2}.
- OSTI ID:
- 22210132
- Journal Information:
- Materials Research Bulletin, Vol. 46, Issue 11; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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