漂珠负载ZnSn(OH)6/TiO2异质结光催化剂的性能

A Study on the Performance of ZnSn(OH)6/TiO 2 Heterojunction Photocatalyst Supported by Fly Ash Cenosphere

采用水热法合成了氢氧化锌锡ZnSn(OH)6(ZHS)/TiO2-漂珠(FACs)异质结光催化剂。通过X射线衍射(XRD)和扫描电子显微镜(SEM)等手段对样品进行了表征。研究了ZHS/TiO2-FACs异质结在紫外-可见光的照射下对罗丹明B(RhB)的催化降解性能。结果表明,ZSH与二次TiO2-FACs的投入量之比为0.01∶1.00时,复合光催化剂的降解效率最高,达到98.2%。此外,选用FACs作为载体的复合催化剂易于回收,不会产生二次污染,所以在光催化领域具有广阔的应用前景。

ZnSn(OH)6(ZHS)-TiO 2/fly ash cenosphere(FACs)composite photocatalyst was synthesized by hydrothermal method.The samples were characterized by X-ray diffraction(XRD)and scanning electron microscopy(SEM).The photocatalytic degradation of rhodamine B(RhB)was studied.The results showed that the degradation efficiency of composite photocatalyst was 98.2%when the ratio of ZSH to the input amount of secondary TiO 2-FACs was 0.01∶1.00.In addition,the composite catalyst with FACs as the carrier is easy to be recycled,and will not produce secondary pollution,so it has a broad application prospect in the field of photocatalysis.