TiO2的冲击波活化及其光催化活性

刘建军; 于迎春; 李英骏; 贺红亮; 谭华; 徐康

doi:10.11858/gywlxb.1999.02.010

TiO2的冲击波活化及其光催化活性

doi: 10.11858/gywlxb.1999.02.010

1.
中物院流体物理研究所冲击波物理与爆轰物理实验室，四川成都 610003；
2.
沈阳化工学院高分子系，辽宁沈阳 110021；
3.
中物院核物理与化学研究所，四川成都 610003；
4.
中国科学院兰州化学物理研究所，甘肃兰州 730000

详细信息

通讯作者:
刘建军

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出版历程
- 收稿日期: 1998-09-13
- 修回日期: 1998-10-20
- 发布日期: 1999-06-05

Shock Activation of Titanium Oxide and Its Photocatalytic Activity

1.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Chengdu 610003, China;
2.
Department of High Polymer, Shenyang Institute of Chemical Engineering, Shenyang 110021, China;
3.
Institute of Nuclear Physics and Chemistry, CAEP, Chengdu 610003, China;
4.
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

More Information

Corresponding author: LIU Jian-Jun

摘要

摘要: 实验研究了金属氧化物催化剂TiO2在经受不同的冲击波压力处理后，对H2S脱氢反应的光催化活性变化。结果表明，与未冲击样品相比，冲击波处理后TiO2的光催化活性得到了明显提高。在16~34 GPa的实验压力范围内，催化活性提高了2~3倍。初步分析认为，冲击波处理使样品晶粒中生成大量残余应变和位错缺陷，以及使TiO2能隙宽度减小，这是光催化活性提高的主要原因。
- 冲击波 /
- 活化 /
- 催化剂 /
- TiO2
Abstract: The metal oxide catalyst TiO2 has been treated by shock wave, and then used as a photocatalyst for the dehydrogenation of H2S. Results show that, compared with the unshocked sample, the treated ones exhibit much higher photocatalytic activity within the experimental pressure range of 16～34 GPa, the activity has been increased by a factor of 2～3. Analyses of XRD and u.v. vis diffuse reflection spectra suggest that the enhancement may be attributed to the higher density of residual strain and dislocation defects and the degradation of energy gap of the shock treated TiO2.
- shock wave /
- activity /
- catalyst /
- titanium oxide

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