Effect of the sintering temperature on the photocatalytic activity of ZnO+Zn₂TiO₄ thin films

详细信息	查看全文 | 推荐本文 |

• 作者：S.A. May&#xe9 ; n-Hern&#xe1 ; ndez ; G. Torres-Delgado ; R. Castanedo-P&#xe9 ; rez ; J. M&#xe1 ; rquez Mar&#xed ; n ; M. Guti&#xe9 ; rrez-Villarreal ; O. Zelaya-Angel
• 关键词：Zn₂TiO₄ ; ZnO ; Sol– ; gel ; Photocatalytic
• 刊名：Solar Energy Materials and Solar Cells
• 出版年：2007
• 期刊代码：81_09270248
• 类别：ce
• 出版时间：22 September 2007
• 卷：91
• 期：15-16
• 页码：1454-1457
• 文件大小：212 K

摘要

ZnO+Zn₂TiO₄ thin films were obtained by the sol–gel method, the precursor solutions were prepared using two Ti/Zn ratios: 0.49 and 0.69. The films were deposited on glass slide substrates and sintered at temperatures in the 200–600 °C range in increments of 50 °C, with the goal of studying the dependence of the photocatalytic activity (PA) on the annealing temperature. The films were characterized by X-ray diffraction and UV–Vis spectroscopy. The PA was evaluated by measuring the UV–Vis absorption spectra of the methylene blue in aqueous solution before and after photobleaching, using the Lambert–Beer's principle. The higher photocatalytic activities were obtained from the films with sintering temperature around 450 °C, for both Ti/Zn ratios studied.