采用硬脂酸法合成K2La2Ti3-xPbxO10,通过微波辅助酸交换、胺柱撑、离子交换等步骤制备了CdS插层的K2La2Ti3-xPbxO10(记作CdS-K2La2Ti3-xPbxO10)复合光催化剂.利用X射线粉末衍射(XRD),场发射扫描电子显微镜(SEM),X射线能谱仪(EDX),紫外-可见漫反射吸收光谱(UV-Vis),X射线光电子能谱(XPS)和光致发光光谱(PL)等对产物进行表征,考察了CdS-K2La2Ti3-xPbxO10在紫外光及可见光下催化制氢活性.结果表明,Pb离子掺杂和CdS插层K2La2Ti3-xPbxO10拓展了催化剂的可见光吸收范围,提高了光催化活性.微波辅助制备的催化剂在紫外光和可见光照射3h后的产氢量分别为230.15和3.35 mmol/(g cat),并对光催化机理进行了分析.
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