Photocatalytic and superhydrophilicity properties of N-doped TiO2 nanothin films

被引：44

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

共 34 条

[1]

[Anonymous], 1995, FRACTAL CONCEPT SURF, DOI DOI 10.1017/CBO9780511599798

[2] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[3] Superhydrophilicity of TiO2 thin films using TiCl4 as a precursor [J].

Ashkarran, A. A. ;

Mohammadizadeh, M. R. .

MATERIALS RESEARCH BULLETIN, 2008, 43 (03) :522-530

[4] The effect of heat treatment on superhydrophilicity of TiO2 nano thin films [J].

Ashkarran, A. A. ;

Mohammadizadeh, M. R. .

EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS, 2007, 40 (02) :155-162

[5] Fabrication of superhydrophobic surfaces with controlled topography and chemistry [J].

Blondiaux, N. ;

Scolan, E. ;

Popa, A. M. ;

Gavillet, J. ;

Pugin, R. .

APPLIED SURFACE SCIENCE, 2009, 256 (03) :S46-S53

[6] Effect of urea on the photoactivity of titania powder prepared by sol-gel method [J].

Cheng, Ping ;

Deng, Changsheng ;

Gu, Mingyuan ;

Dai, Xiaming .

MATERIALS CHEMISTRY AND PHYSICS, 2008, 107 (01) :77-81

[7] TiO2 anatase thin films deposited by spray pyrolysis of an aerosol of titanium diisopropoxide [J].

Conde-Gallardo, A ;

Guerreri, M ;

Castillo, N ;

Soto, AB ;

Fragoso, R ;

Cabañas-Moreno, JG .

THIN SOLID FILMS, 2005, 473 (01) :68-73

[8]

Crap O., 2004, PROG SOLID STATE CHE, V32, P33

[9] On the possibility of superhydrophobic behavior for hydrophilic materials [J].

Cui, X. S. ;

Li, W. .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2010, 347 (01) :156-162

[10] Structural, optical and electrical characterization of spray-deposited TiO2 thin films [J].

Deshmukh, H. P. ;

Shinde, P. S. ;

Patil, P. S. .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 130 (1-3) :220-227

← 1 2 3 4 →