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在无模板或无表面活性剂条件下,利用溶剂热制备片状结构的CaTiO3.探究了水热时间对CaTiO3显微结构和在紫外光下催化降解罗丹明B溶液的光催化活性.分析了CaTiO3光催化剂加入量和不同pH值的罗丹明B溶液对样品光催化性能的影响.通过扫描电镜(FESEM)、X-衍射仪(XRD)、紫外-可见吸收光谱仪(UV-vis)和比表面积分析仪(BET)对样品进行了性能表征.实验结果表明:当水热时间24 h时制备了具有较好光催化性能的CaTiO3片状结构.同时加入0.1g CaTiO3样品降解pH值为9的罗丹明B溶液中,在紫外光的照射下CaTiO3样品光催化降解效果最好,60 min可达到K=0.0526 min-,其降解完后的溶液pH呈现中性,对环境不会造成酸碱污染.

参考文献

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