C@ZnFe2O4/Ag3PO4复合材料的可见光催化性能研究

以具有碳纤维原始结构的C@ZnFe_2O_4为前驱体材料,利用沉淀法将其与Ag_3PO_4进行不同比例复合制得C@ZnFe_2O_4/Ag_3PO_4三元复合物.利用XRD、FESEM、XPS、UV-Vis DRS、PL等测试手段对合成样品进行表征,并测试了其可见光催化性能.结果表明,C@ZnFe_2O_4的引入能够显著提高Ag_3PO_4的光催化性能及稳定性,其中CZ-AP1样品对亚甲基蓝(MB)具有最佳的去除能力,经过4次循环测试后仍能保持85%的去除效率,这主要是由于碳纤维、ZnFe_2O_4和Ag_3PO_4三者之间的协同作用,有效增强了Ag_3PO_4对可见光的吸收及实现了光生电子-空穴对的有效分离.

Visible light photocatalytic activity of C@ZnFe_2O_4/Ag_3PO_4 composites

C@ZnFe_2O_4 with carbon fiber original structure is used as precursor material, which is combined with Ag_3PO_4 by precipitation method to obtain C@ZnFe_2O_4/Ag_3PO_4 ternary composites. The synthesized samples were characterized by XRD, FESEM, XPS, UV-Vis DRS and PL. The visible light catalytic properties of samples were also tested. The results show that the introduction of C@ZnFe_2O_4 can significantly improve the photocatalytic performance and stability of Ag_3PO_4. The CZ-AP1 sample has the best removal ability for methylene blue(MB), and remains 85% removal efficiency after 4 cycling experiments. It is mainly due to the synergy among carbon fiber, ZnFe_2O_4 and Ag_3PO_4, which effectively enhances the absorption of visible light by Ag_3PO_4 and achieves efficient separation of photogenerated electron-hole pairs.