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Citation: HUANG Dong-Sheng, ZENG Ren-Jie, CHEN Chao-Feng, LI Yu-Hua. Hydrophilicity of TiO₂ Thin Films Codoped with Iron and Nitrogen[J]. Acta Physico-Chimica Sinica, ;2007, 23(07): 1037-1041. doi: 10.3866/PKU.WHXB20070714 shu

Hydrophilicity of TiO₂ Thin Films Codoped with Iron and Nitrogen

1.
State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China

Received Date: 24 January 2007
Available Online: 21 May 2007

TiO2 doped with iron (Fe-TiO2) thin films were synthesized using sol-gel method. TiO2 codoped with iron and nitrogen (Fe/N-TiO2) thin films were prepared by calcining Fe-TiO2 thin films in ammonia atmosphere. The influence of iron and nitrogen doping concentration, heat-treatment temperature and film thickness on the hydrophilicity of the films were studied by XRD, XPS, SEM, UV-Vis spectra and measured water contact angle. The results indicated that Fe/N-TiO2 (0.5%Fe,molar percent) films were optimumin hydrophilicity, especially under visible-light irradiation. Doping iron mostly reduced the recombination of electrons and holes, and doping nitrogen in TiO2 enhances photoresponse in visible-light region. The hydrophilicity benefited fromboth effects.
- Sol-gel method; Iron and nitrogen codoping; Titania; Hydrophilicity
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Hydrophilicity of TiO2 Thin Films Codoped with Iron and Nitrogen

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通讯作者: 陈斌, bchen63@163.com

Hydrophilicity of TiO₂ Thin Films Codoped with Iron and Nitrogen