TiO2-SiO2二维大孔薄膜的制备及其光催化活性研究

doi:10.7517/j.issn.1674-0475.2015.05.383

影像科学与光化学 ›› 2015, Vol. 33 ›› Issue (5): 383-393.DOI: 10.7517/j.issn.1674-0475.2015.05.383

TiO₂-SiO₂二维大孔薄膜的制备及其光催化活性研究

杨小龙, 潘月, 邢明阳, 张金龙

华东理工大学精细化工研究所, 上海 200237

收稿日期:2015-03-12 修回日期:2015-04-22 出版日期:2015-09-16 发布日期:2015-09-16
通讯作者: 邢明阳, 张金龙
基金资助:
国家自然科学基金(21203062, 21377038, 21173077, 21237003)、国家重点基础研究发展规划973项目(2013CB632403)、高等学校博士学科点专项科研基金(20120074130001)和中央高校基本科研业务费(22A201514021)资助

Preparation and Photocatalytic Study of TiO₂-SiO₂ Macroporous Film

YANG Xiaolong, PAN Yue, XING Mingyang, ZHANG Jinlong

Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P. R. China

Received:2015-03-12 Revised:2015-04-22 Online:2015-09-16 Published:2015-09-16

摘要/Abstract

摘要：

本文采用改进的溶胶-凝胶法制备了具有锐钛矿晶型结构和较小晶粒尺寸的TiO₂-SiO₂溶胶,并以聚苯乙烯(PS)小球为模板,采用旋涂法制备了新型大孔TiO₂-SiO₂复合薄膜,探究了煅烧温度、不同硅钛比以及溶胶添加量对所制备的大孔薄膜形貌及光催化活性的影响,并考察了该薄膜真空活化前后(Ti³⁺掺杂后)在紫外及模拟太阳光下光催化降解有机污染物罗丹明B的活性。通过Raman、DRS、SEM、EPR等方法对薄膜进行表征,发现制备的复合薄膜具有高透明度、良好附着力及优异的光催化活性。

关键词: 大孔薄膜, 二氧化钛, 聚苯乙烯小球, 真空活化, 光催化

Abstract:

In this work, the TiO₂-SiO₂ sol was prepared by a modified sol-gel method, which exhibited the anatase and small crystal size. And then the macroporous TiO₂-SiO₂ film was synthesized by using polystyrene spheres as the template and TiO₂-SiO₂ sol as the precursor, via the spinning-coating combined with calcination technology. We investigated the impact of calcination temperature, Ti/Si ratio and concentration of sol on the microstructure and photocatalytic activity of macroporous TiO₂-SiO₂ film. We also studied the UV/solar light photcoatalytic activity for the degradation of rhodamin B over the composite film after a vacuum activation treatment. The RAMAN,DRS,SEM,EPR, and other characterizations were used to study a serials of TiO₂-SiO₂ films, as a result, the as-prepared film showed a good transparent property, excellent adhesion and photcatalytic activity.

Key words: macroporous films, titania, polystyrene spheres, vacuum activation, photocatalysis

杨小龙, 潘月, 邢明阳, 张金龙. TiO₂-SiO₂二维大孔薄膜的制备及其光催化活性研究[J]. 影像科学与光化学, 2015, 33(5): 383-393.

YANG Xiaolong, PAN Yue, XING Mingyang, ZHANG Jinlong. Preparation and Photocatalytic Study of TiO₂-SiO₂ Macroporous Film[J]. Imaging Science and Photochemistry, 2015, 33(5): 383-393.

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TiO₂-SiO₂二维大孔薄膜的制备及其光催化活性研究

Preparation and Photocatalytic Study of TiO₂-SiO₂ Macroporous Film

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