采用光化学沉积法制备了一系列不同Pt含量的新型Pt/BiOCl纳米片光催化剂,运用N2物理吸附-脱附、X射线粉末衍射、扫描电镜、透射电镜、X射线光电子能谱、光致发光光谱、紫外-可见漫反射光谱等手段对Pt/BiOC1进行了表征,并以λ=254 nm的紫外灯和钨灯为光源,考察了Pt含量对Pt/BiOCl光催化降解酸性橙Ⅱ活性的影响.结果表明,沉积的Pt对BiOC1样品比表面积的影响不大,但可有效增强催化剂对可见光的吸收能力,显著抑制光生电子与空穴的复合.当Pt含量为1％～2％时,能大幅度提高紫外光下BiOC1催化降解染料的活性,并产生可见光活性.这是由于Pt/BiOCl具有一定的可见光吸收能力,产生了Pt纳米粒子的等离子体光催化作用.
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