Effect of Surface State Properties of TiO2Nanoparticle Film on Its Photocatalytic Activity

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (11): 1787.

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Effect of Surface State Properties of TiO₂Nanoparticle Film on Its Photocatalytic Activity

CAO Ya-An¹, DING Lan², MA Ying¹, GUAN Zi-Sheng¹, XIE Teng-Feng², ZHANG Xin-Tong³, WU Zhi-Yun², BAI Yu-Bai², LI Tie-Jin², YAO Jian-Nian¹, WU Yue³

1. Institute of Photographic Chemistry, Chinese Academy of Sciences, Beijing 100101, China;
2. Department of Chemistry, Jilin University, Changchun 130023, China;
3. Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received:1999-01-27 Online:1999-11-24 Published:1999-11-24

Abstract

Abstract: TiO₂nanoparticle film catalysts with different thicknesses were prepared by plasma-enhanced chemical vapor deposition(PECVD) method and the surfaces were subsequently treated by TiCl₄or O₂plasma. Two kinds of TiO₂films with different surface properties were obtained. Their surface microstructures and energy levels of surface states were tested by AFM, XRD, SPS. The photocatalytic activities of the catalysts were determined via photodegradation experiments of phenol. The results demonstrated that photocatalytic activities of samples whose surface was treated by O₂plasma were greater than those treated by TiCl₄plasma. Moreover, photodegradation ratio of phenol during the first hour catalyzed by 0.17 μm thickness TiO₂nanoparticle film was greater than other samples. Especially, the difference of photocatalytic activities of TiO₂nanoparticle films treated by TiCl₄or O₂plasma was respectively explained by energy band theory.

Key words: TiO₂nanoparticle film, PECVD method, SPS, Surface state, Photocatalytic activity

CLC Number:

O614

TrendMD:

CAO Ya-An, DING Lan, MA Ying, GUAN Zi-Sheng, XIE Teng-Feng, ZHANG Xin-Tong, WU Zhi-Yun, BAI Yu-Bai, LI Tie-Jin, YAO Jian-Nian, WU Yue . Effect of Surface State Properties of TiO₂Nanoparticle Film on Its Photocatalytic Activity[J]. Chem. J. Chinese Universities, 1999, 20(11): 1787.

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Effect of Surface State Properties of TiO₂Nanoparticle Film on Its Photocatalytic Activity

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