复合纳米棒状Ag3PO4/ZnO材料的光催化性能

以一维棒状ZnO为载体,采用原位生长法制备纳米棒状Ag_3PO_4/ZnO复合材料。通过XRD、SEM、TEM、XPS和UV-Vis-DRS等测试对纳米棒状Ag_3PO_4/ZnO复合材料进行了表征,并评价了样品在可见光下的光催化性能。结果显示,ZnO几乎无可见光活性,通过水热法制备的ZnO形貌发生了改变,为比表面积的增加做出了贡献,为Ag_3PO_4提供了更多的负载可能。在可见光照射下,纯ZnO和Ag_3PO_4对苯酚的降解率分别为20%和38%,复合材料Ag_3PO_4/ZnO对苯酚的降解率为91.24%,光催化降解性能明显高于纯ZnO和Ag_3PO_4。最后,光催化稳定性的研究证明,Ag_3PO_4/ZnO复合材料形成了有效的异质结结构,抑制了电子-空穴的复合,提高了Ag_3PO_4/ZnO复合材料的稳定性。

Photocatalytic Performance of Composite Nanorod Ag3PO4/ZnO Materials

The nanorod-shaped Ag3PO4 / ZnO composites were prepared by in-situ growth method using one-dimensional rod-shaped ZnO as a carrier. The structure of the composites was characterized by XRD, SEM, TEM, XPS and UV-Vis-DRS were used to characterize the crystal phase, surface morphology and optical absorption of the nanorod Ag3PO4 / ZnO nanocomposite. The optical properties of the sample in visible light Catalytic properties. The results show that ZnO has almost no visible light activity, and the hydrothermal method changes the morphology of ZnO to increase its specific surface area, which provides more possible loading for Ag3PO4. The complex Ag3PO4 / ZnO showed a significantly higher photocatalytic activity than pure ZnO and Ag3PO4 in visible light. Finally, the photocatalytic stability of the Ag3PO4 / ZnO composite shows that the Ag3PO4 / ZnO composite forms an effective heterojunction structure and inhibits electron-hole recombination, thus greatly improving the stability of the Ag3PO4 / ZnO composite.