Effect of Sn-doping on Photocatalytic Activity of TiO2 Film for Degradation of Phenol

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (11): 1910.

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Effect of Sn-doping on Photocatalytic Activity of TiO₂ Film for Degradation of Phenol

CAO Ya-An¹, SHEN Dong-Fang⁴, ZHANG Xin-Tong², MENG Qing-Ju³, MA Ying¹, WU Zhi-Yun, BAI Yu-Bai², LI Tie-Jin², YAO Jian-Nian²

1. Centerf or Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
2. Departmentof Chemistry, Jilin University, Changchun 130023, China;
3. Department of Electronic Engineering, Jilin University, Changchun, 130023 China;
4. The Second Air Force College of PLA, Changchun 130022, China

Received:2000-09-12 Online:2001-11-24 Published:2001-11-24

Abstract

Abstract: We prepared TiO₂(anatase) and Sn-doped TiO₂ nanoparticlate film by Plasma enhanced Chemical Vapor Deposition(PECVD) method. XR-Dand XP-Sexperiments showed that Sn was doped into the lattice of TiO₂ with a ratio of n-(Sn): n-(Ti)=1:10. Sn-doping largely enhanced the photocatalytic activity of TiO₂ film for phenol degradation. The enhancement in photoactivity by doping was discussed, based on the characterization with AFM, FTIRand EFISPS. Sn-doping produced localized level of Sn ⁴⁺ in the band gap of TiO₂, about 0.4 eVbelow the conduction band, which could capture photogenerated electrons and reduce O₂ adsorbed on the surface of TiO₂ film, thus accelerated the photocatalytic reaction.

Key words: PECVD, TiO₂ nanoparticulate film, Doping, Photocatalysis

CLC Number:

O614.339

TrendMD:

CAO Ya-An, SHEN Dong-Fang, ZHANG Xin-Tong, MENG Qing-Ju, MA Ying, WU Zhi-Yun, BAI Yu-Bai, LI Tie-Jin, YAO Jian-Nian . Effect of Sn-doping on Photocatalytic Activity of TiO₂ Film for Degradation of Phenol[J]. Chem. J. Chinese Universities, 2001, 22(11): 1910.

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Effect of Sn-doping on Photocatalytic Activity of TiO₂ Film for Degradation of Phenol

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