Preparation of ZnO∶Mg@CuWO4-Composite Photoanode Materials and Research on Their Photoelectrocatalytic Properties
王杜彤 1许华梅1
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. 哈尔滨师范大学,黑龙江哈尔滨 150025
折叠
摘要
通过水热法成功制备了 ZnO∶Mg@CuWO4复合材料,首先使用XRD、SEM等测试方法对各个样品进行表征,而后进行光电催化测试以确定各样品的光电催化活性.实验表明,ZnO∶Mg@CuWO4复合材料比纯相CuWO4具有更高的光电催化活性,且与纯相ZnO∶Mg相比提高了稳定性.ZnO∶Mg@CuWO4复合材料成功提升了光阳极的光电流密度(约0.28 mA/cm2@1.23 V vs.RHE),是纯相 CuWO4(约 0.16 mA/cm2@1.23 V vs.RHE)光阳极的 1.8倍.ZnO∶Mg@CuWO4复合材料提高了表面电荷注入与分离效率,促进了界面电荷的转移,减少了光生载流子复合,从而提高了 CuWO4的光电催化效率.
Abstract
ZnO∶Mg@CuWO4 composites were successfully prepared by hydrothermal method,characterised by XRD and SEM,and subjected to a series of photoelectrocatalytic tests.The results show that the ZnO∶Mg@CuWO4 composites have bet-ter catalytic activity than the pure phase CuWO4 and improved stability compared with the pure phase ZnO∶Mg.And the ZnO∶Mg@CuWO4 photoanode has a high photocurrent density(～0.28 mA/cm2@1.23 V vs.RHE)which is 1.8 times higher than that of the pure phase CuWO4(～0.16 mA/cm2@1.23 V vs.RHE)photoanode.The ZnO∶Mg@CuWO4 composites prepared in the study improved the charge injection and separation efficiency,facilitated the interfacial charge transfer,and suppressed the photogenerated carrier complexation,thus enhancing the photoelectrocatalytic activity of CuWO4.
万方数据