Abstract
In this paper, Cu 2O particle-deposited TiO 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 2O and n-type TiO 2. Various measurement results confirm that the amount of pure Cu 2O submicroparticles, with diameters within the range of 200–400 nm and deposited on the surface of TiO 2 nanobelts, can be controlled, and that the purity of Cu 2O 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 2O to TiO 2.
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