三元复合物Ag/Cu_(2)O/g-C_(3)N_(4)的制备及其光催化降解和抗菌性能研究

Preparation of Ternary Composite Ag/Cu_(2)O/g-C_(3)N_(4) and Its Photocatalytic Degradation and Antibacterial Properties

以尿素、硫酸铜、乙酸银为原料,采用溶液法制备了三元复合物Ag/Cu_(2)O/g-C_(3)N_(4),通过XRD、XPS、SEM、TEM、UV-Vis等手段对三元复合物的结构进行了表征;以罗丹明B为模型研究了三元复合物的光催化降解性能,以大肠杆菌和金黄色葡萄球菌为模型研究了三元复合物的抗菌性能,并探究了三元复合物的光催化降解机理。结果表明,Ag和Cu_(2)O粒子沉积在g-C_(3)N_(4)片层结构上,Ag、Cu_(2)O和g-C_(3)N_(4)三者之间的协同作用使得三元复合物的光催化降解性能和抗菌性能大幅提高。为构建用于实际水体污染处理的g-C_(3)N_(4)基复合材料提供了新思路。

Taking urea,copper sulfate,and silver acetate as raw materials,we prepared the ternary composite Ag/Cu_(2)O/g-C_(3)N_(4) by a solution method,and characterized its structure by XRD,XPS,SEM,TEM,and UV-Vis.Moreover,we investigated its photocatalytic degradation property using Rhodamine B as a model,and antibacterial property using Escherichia coli and Staphylococcus aureus as models.Meanwhile,we explored the photocatalytic degradation mechanism of the ternary composite.The results show that Ag and Cu_(2)O particles deposited on the g-C_(3)N_(4) lamellar structure,and the synergistic interaction among Ag,Cu_(2)O,and g-C_(3)N_(4) can greatly improve the photocatalytic degradation and antibacterial properties of the ternary composite.The study provides a new idea for the construction of g-C_(3)N_(4)-based composite materials for the treatment of actual water pollution.