Improved photocatalytic activity of Sn4+-doped and undoped TiO2 thin film coated stainless steel under UV- and VIS-irradiation

被引：84

作者：

Sayilkan, Hikmet ^{[1
]}

机构：

[1] Inonu Univ, Fac Educ, Dept Sci, TR-44289 Malatya, Turkey

来源：

APPLIED CATALYSIS A-GENERAL | 2007年 / 319卷

关键词：

nano-TiO2; Sn4+-doping; hydrothermal process; thin film; photocatalysis;

D O I：

10.1016/j.apcata.2006.12.012

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：

TiO2 can be used as a photocatalyst because of its semiconductor property. If TiO2 is doped with transition metal ions, its electronic properties are modified. In this work, nanosized Sn4+-doped and undoped TiO2 (TiO2-Sn4+ and TiO2) particles have been synthesized without organic solvent by hydrothermal process at low temperature. Nano-TiO2 particulates having a doping ratio of about 5 [Sn4+/Ti(OBun)4; mol/mol%] allowed to coat the stainless steel substrate by spin-coating technique. The particles and the films were characterized by XRD, SEM, BET and UVNIS/NIR techniques. The photocatalytic performance of the films were tested for degradation of Malachite Green dye in solution under UV and VIS-lights. The results reveal that (a) nano-TiO2 particles are fully anatase crystalline form and are easily dispersed in water, (b) the coated surfaces are hydrophilic, (c) the photocatalytic activity of the TiO2-Sn 41 film is higher than that of the undoped TiO2 film under UV and VIS-light irradiation and, (d) TiO2-Sn4+ film can be repeatedly used with increasing photocatalytic activity compared to undoped TiO2 film. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：230 / 236

页数：7

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