Photocatalytic activity of sol-gel TiO2 coatings

被引：0

作者：

Cong, Bingjun ^{[1
]}

Wang, Ju ^{[1
]}

Wang, Kangkai ^{[1
]}

Liu, Yong ^{[1
]}

Han, Gaorong ^{[1
]}

Song, Chenlu ^{[1
]}

机构：

[1] State Key Laboratory for Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou

来源：

Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology | 2014年 / 34卷 / 09期

关键词：

Columnar grains; Grain size; Photocatalysis property; Sol-Gel;

D O I：

10.13922/j.cnki.cjovst.2014.09.11

中图分类号：

学科分类号：

摘要：

The anatase-phased TiO2 coatings, with a single-layer thickness of 20 nm, were synthesized on quartz substrate in sol-gel method with Ti(OC4H9)4 as the Ti-source, HNO3 and CH3COOH as the catalysts. The impact of the synthesis co nditions, especially the sintering temperature, on the microstructures and photoca talytic characteristics of the TiO2 coatings was investigated with X-ray diff raction scanning electron microscopy, atomic force microscopy and ultra violet vi sible spectroscopy. The results show that the sintering temperature significantly affects the microstructures and photo-catalytic performance. For example, as the sintering temperature increased, its absorbance changed in a decrease-increase mode, (decreasing from 300~550℃ and increasing from 550 to 600℃), but its pho to-catalytic activity varied in an increase-decrease mode. We suggest that the large columnar grains, grown at 550℃, be responsible for its good photo-catalyti c performance. ©, 2014, Science Press. All right reserved.

引用

页码：938 / 942

页数：4

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