Anatase TiO2 films with 2.2 eV band gap prepared by micro-arc oxidation

作者：Wan L; Li J F; Feng J Y^*; Sun W; Mao Z Q

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2007, 139(2-3): 216-220.

DOI：10.1016/j.mseb.2007.02.014

• micro-arc oxidation
• TiO2 films
• band gap
• photocatalytic activity

Anatase TiO2 films were prepared by micro-arc oxidation of TiN films in a Na3PO4 electrolytic solution, while TiN films were obtained by ion beam assisted deposition on Ti substrates. The crystal structure, surface morphology and optical property of the films were investigated by X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), scanning electron microscopy (SEM) and UV-vis spectroscopy, respectively. The photocatalytic activity of the films was evaluated by the decomposition of methylene blue. Mechanisms for micro-arc oxidation and band gap narrowing of N-doped TiO2 were discussed.

• 出版日期2007-5-15
• 单位清华大学