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钒掺杂改性层状钙钛矿K2La2Ti3O10的光催化性能

DOI: 10.11830/ISSN.1000-5013.2008.04.0545

Keywords: K2La2Ti3O10, 掺杂, 裂解水, 光催化剂

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Abstract:

通过高温固相法,制备出V5+掺杂的K2-xLa2Ti3-xVxO10(x=0~1.0)系列层状钙钛矿.采用X射线衍射、紫外可见漫反射光谱和比表面积对样品进行表征.研究K2-xLa2Ti3-xVxO10作为光催化剂在波长大于290 nm光辐射下,裂解水产生氢气的光催化活性,并讨论V5+掺杂对层状钙钛矿K2La2Ti3O10光催化活性的影响.实验结果表明,适量掺杂的V5+可有效地提高K2La2Ti3O10裂解水的光催化活性,450 W汞灯照射5 h后,1 g的K2-xLa2Ti3-xVxO10(x=0.1)光催化剂可催化分解甲醇溶液(体积分数为10%)产生氢气约16μmol.

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