壳聚糖-铜锌锡硒纳米复合光催化剂的制备及其降解印染废水的研究

Preparation of Chitosan-CZTSe Nanocomposite Photocatalyst and Its Degradation of Dyeing Wastewater

以CuCl_2·2H_2O、ZnCl_2、SnCl_4·5H_2O和硒粉为原料,乙二胺作为溶剂,采用溶剂热反应法合成铜锌锡硒纳米材料,并将其与壳聚糖溶液进行超声复合,制备壳聚糖-铜锌锡硒纳米复合光催化剂。采用SEM、XRD等方式对样品进行了表征。以氙灯为可见光源,以亚甲基蓝为目标污染物研究了壳聚糖-铜锌锡硒可见光下降解模拟染料废水的性能。实验表明,壳聚糖-铜锌锡硒纳米复合光催化剂对MB的降解率高达96.7%,壳聚糖-铜锌锡硒纳米复合光催化剂具有优异的光催化性能。

The CZTSe nanomaterials were synthesized by solvothermal method and ultrasonically complexed with chitosan solution.The samples were characterized by scanning electron microscopy and X-ray powder diffraction. The photocatalytic performance of chitosan-CZTS was studied using methylene blue as the target pollutan. Under the optimization experimental conditions the degradation rate of MB was up to 96. 7% after photocatalytic reaction with xenon lamp as visible light source,which indicated that the chitosan-CZTSe nanocomposite photocatalyst had excellent photocatalytic activity and had high treatment effect on organic dye wastewater.