Improvement of TiO 2 photocatalytic properties under visible light by WO 3 /TiO 2 and MoO 3 /TiO 2 composites

Shouli Bai, Haiyan Liu, Jianhua Sun, Ye Tian, Song Chen, Jingli Song, Ruixian Luo, Dianqing Li, Aifan Chen, Chung Chiun Liu

研究成果: 雜誌貢獻期刊論文同行評審

130 引文 斯高帕斯(Scopus)

摘要

The WO 3 /TiO 2 or MoO 3 /TiO 2 composites with different compositions have been prepared by a facile sol-gel method. The obtained composites were characterized using X-ray diffraction (XRD), BET surface area analysis, electron dispersion spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) emission spectrum. The research results show that BET specific surface areas of the composites are significantly enhanced and the composites possess higher photocatalytic activity than pure TiO 2 for the degradation of Rhodamine B (RhB) under visible light irradiation. It has been demonstrated that the photocatalytic activity depends on the composition and calcination temperature of composites, and degradation conditions for RhB. The improvement of photocatalytic activity can be attributed to the reduction of the electron-hole recombination rate due to the formation of WO 3 /TiO 2 or MoO 3 /TiO 2 heterostructures, which have been confirmed by XPS and PL spectra.

原文???core.languages.en_GB???
頁(從 - 到)61-68
頁數8
期刊Applied Surface Science
338
DOIs
出版狀態已出版 - 30 5月 2015

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