WO_(3)/CdS_(x)(CO_(3))_(1-X)的制备及其光催化析氢性能的研究

Study on preparation and photocatalytic H2 evolution performance of WO_(3)/CdS_(x)(CO_(3))_(1-X) photocatalyst

首先采用水热法合成了WO_(3)样品,其次利用水浴法在WO_(3)表面附着了CdS_(x)(CO_(3))_(1-X)材料并构建了直接Z型WO_(3)/CdS_(x)(CO_(3))_(1-X)光催化剂.实验结果表明,WO_(3)光激发的导带电子和CdS_(x)(CO_(3))_(1-X)光激发价带的空穴在界面处发生了复合,使得WO_(3)价带的空穴和CdS_(x)(CO_(3))_(1-X)导带的电子实现分离,从而有效地提高了WO_(3)/CdS_(x)(CO_(3))_(1-X)复合光催化剂的光催化H_(2)的析出效率.

The WO_(3)sample was synthesized by hydrothermal method,and then the CdS_(x)(CO_(3))_(1-X)material were attached to the surface of WO_(3)with a Z-scheme WO_(3)/CdS_(x)(CO_(3))_(1-X)structure by the water bath method.Experimental results show that the photoexcited conduction electrons of WO_(3)recombining with the photoexcited valence band holes of CdS_(x)(CO_(3))_(1-X)at the interface between them,while the the valence band holes of WO_(3)and the conduction band electrons of CdS_(x)(CO_(3))_(1-X)would be effectively separated in the WO_(3)/CdS_(x)(CO_(3))_(1-X)photocatalyst,thereby the photocatalytic H_(2)evolution ability of the WO_(3)/CdS_(x)(CO_(3))_(1-X)photocatalyst is effectively improved in the H_(2)O solution.