MCNOs/CdS双效光催化剂的制备及其性能研究

Preparation and Properties of MCNOs/CdS Dual-Effect Photocatalyst

水热合成法制备了不同磁性纳米洋葱碳(MCNOs)负载量(0%、1%、3%、5%)的MCNOs/CdS光催化剂。并通过X射线衍射分析(XRD)、扫描电子显微镜(SEM)、傅里叶红外光谱(FT-IR)、X射线光电子能谱(XPS)、紫外可见光光谱(UV-Vis)、磁滞回线测定仪(VSM)对其进行表征,探究了MCNOs负载比例对催化剂在可见光下降解RhB性能及机理的影响。结果表明,MCNOs能有效提高CdS的光催化效果,复合3%MCNOs后降解率为96%,与纯CdS相比降解率提高了30%,磁性分析表明,其具有良好的顺磁性并能实现催化剂的有效回收。MCNOs/CdS在可见光下催化降解RhB的一级反应动力学直线有较好的拟合度,表明制备的催化剂有较好的催化活性。

The MCNOs/CdS photocatalysts with different magnetic nanosized carbon(MCNOS)loads(0%,1%,3%,5%)were prepared by hydrothermal synthesis.It was characterized by XRD,SEM,FT-IR,XPS,UV-Vis and VSM.The influence of MCNOs loading ratio on RhB performance and mechanism of catalyst in visible light degradation was investigated.The results show that MCNOs can effectively improve the photocatalytic effect of CdS.The degradation rate of 3%MCNOs compound is 96%,which is 30%higher than that of pure CdS.Magnetic analysis shows that it has good paramagnetism and can realize effective recovery of catalyst.The first-order reaction kinetic line of MCNOs/CdS photocatalyst degradation of RhB under visible light has a good degree of fit,indicating that the prepared catalyst has good catalytic activity.