Photocatalytic and superhydrophilicity properties of N-doped TiO2 nanothin films

被引：43

作者：

Chekini, M. ^{[1
]}

Mohammadizadeh, M. R. ^{[1
,2
]}

Allaei, S. M. Vaez ^{[1
]}

机构：

[1] Univ Tehran, Dept Phys, Superconduct Res Lab, Tehran, Iran

[2] Brock Univ, Dept Phys, St Catharines, ON L2S 3A1, Canada

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 16期

关键词：

Sol-gel; N-doped TiO2 thin film; Spin coating; Hydrophilic; Photocatalytic; THIN-FILMS;

D O I：

10.1016/j.apsusc.2011.03.084

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pure TiO2 and nitrogen doped titanium dioxide (N-TiO2) thin films were prepared by sol-gel method through spin coating on soda lime glass substrates. TiCl4 and urea were used as Ti and N sources in the sol. XRD results showed nitrogen doping has retarded anatase to rutile phase transformation. The doping also leads to a decrease in roughness of the samples from 4 nm(TiO2) to 1nm (N-TiO2). However, surface analysis by statistical methods reveals that both surfaces have self-affine structure. Optical band gap of thin films was shifted from 3.65 eV (TiO2) to 3.47 eV (N-TiO2). Hydrophilic conversion and photocatalytic degradation properties of thin films were investigated and exhibited that N-TiO2 thin film has more preferable hydrophilicity and photocatalytic properties under UV illumination. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：7179 / 7183

页数：5

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