Fabrication and characterization of brookite-rich, visible light-active TiO2 films for water splitting
作者： Hui Pan , Xiaofeng Qiu , Ilia N. Ivanov , Harry M. Meyer , Wei Wang
DOI: 10.1016/J.APCATB.2009.09.016
关键词:
摘要: We report that mild oxidation of Ti foils in air results brookite-rich titanium oxide (TiO2) films with similar spectral response to dye-sensitized TiO2. X-ray powder diffraction and Raman spectroscopy show the onset brookite formation occurs at 500 8C, material is characterized by a strong absorption band visible range. The first-principle calculations enhanced light correlates presence interstitials. Photocurrent density measurements water splitting reveal TiO2 exhibits highest photocatalytic performance among different forms produced foils. With increasing temperature transformation rutile phase accompanied declining range photoactivity observed.
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