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TiO2的冲击波活化及其光催化活性

DOI: 10.11858/gywlxb.1999.02.010, PP. 138-142

Keywords: 冲击波,活化,催化剂,TiO2

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Abstract:

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16~34GPa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。

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