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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

TiCl4-O2体系高温反应制备超细TiO2光催化材料的研究

施利毅1; 李春忠2; 房鼎业1; 张剑平3; 朱以华2; 陈爱平2   

  1. 1. 华东理工大学化工系; 上海 200237; 2. 华东理工大学技术化学物理研究所; 上海 200237; 3. 上海大学化学化工学院, 上海 200072
  • 收稿日期:1999-01-08 修回日期:1999-03-08 出版日期:1999-10-20 网络出版日期:1999-10-20

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. 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

PDF (PC)

1039

摘要： 高温管式气溶胶反应器中，利用ＴｉＣｌ４气相氧化制备超细ＴｉＯ２光催化材料，研究了停留时间和反应温度对粒子形态的影响．结果表明ＴｉＯ２粒度随停留时间延长和反应温度升高而增大；金红石相含量随停留时间延长而增加，当反应温度１３００℃时，粒子中金红石含量出现最大值．以偶氮染料活性艳红Ｘ－３Ｂ为模拟废水；考察粒子光催化活性．光催化活性与粒径和晶型等形态指标有关，等效粒径３６．４ｎｍ、金红石含量１８９７％ＴｉＯ２的活性高于商品Ｐ２５和ＳＨ－１．

关键词: 光催化材料, 二氧化钛, 超细粒子, 气溶胶, 染料废水

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 TiO2 were 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

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