Ultrafine Titania Photocatalytic Materials Synthesized by High Temperature Reaction in TiCl4-O2 System

Journal of Inorganic Materials

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Ultrafine Titania Photocatalytic Materials Synthesized by High Temperature Reaction in TiCl₄-O₂ System

SHI Li-Yi¹, Li Chun-Zhong², FanG Ding-Ye¹, ZHANG Jian-Ping³, ZHU Yi-Hua², CHEN Ai-Ping²

1. Institute of Technical Chemistry and Physics; East University of Science TechnologyShanghai 200237 China; 2. Department of Chemical Engineering; East University of Science Technology.Shanghai 200237 China; 3. School of Chemistry and Chemical Engineering Shanghai 200072, China

Received:1999-01-08 Revised:1999-03-08 Published:1999-10-20 Online:1999-10-20

Abstract

Abstract: Ultrafine titania particles were synthesized by the gas-phase oxidation of titanium tetrachloride in a high temperature tubular aerosol
flow reactor. The measurement of EDS, TG-DTA, TEM, XRD and BET surface area was used to characterize the particles. The effect of residence time
and reaction temperature on the morphology of titania particles was investigated. The results showed the average particle size of titania
became larger and rutile weight fraction increased as the residence time increased, and the maximum rutile weight fraction was attained at 1300℃
and the particle size increased with increasing temperature. The prepared particles and commercial TiO₂were employed for photocatalytic
degradation of azo dye active red X--3B in aerated solution. The results showed that the photoactivity of the titania particles of average size
35.3nm and 18.97% rutile fraction was higher than that of P25 and SH--1.

Key words: photocatalytic materials, titania, ultrafine particle, aerosol, dyeing wastewater

CLC Number:

TQ036
O643

SHI Li-Yi,Li Chun-Zhong,FanG Ding-Ye,ZHANG Jian-Ping,ZHU Yi-Hua,CHEN Ai-Ping. Ultrafine Titania Photocatalytic Materials Synthesized by High Temperature Reaction in TiCl₄-O₂ System[J]. Journal of Inorganic Materials.

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Ultrafine Titania Photocatalytic Materials Synthesized by High Temperature Reaction in TiCl₄-O₂ System

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