Synthesis and visible light photocatalytic performance of Ag₃PO₄/ZnO@carbon sphere ternary heterostructure

• Main Authors: ZHAO Xiao-hua, WEI Chong, SU Shuai, CUI Jia-bao, ZHOU Jian-guo, LI Cai-zhu, LOU Xiang-dong
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2019-07-01
• Series: Journal of Materials Engineering
• Subjects: Ag₃PO₄; ZnO; carbon sphere; heterostructure; visible light photocatalysis
• Online Access: http://jme.biam.ac.cn/CN/Y2019/V47/I7/76
• ISSN: 1001-4381; 1001-4381

Using flower-like ZnO@carbon sphere (ZnO@C) as precursor, Ag₃PO₄/ZnO@carbon sphere (Ag₃PO₄/ZnO@C) ternary composites were synthesized <i>via</i> an <i>in-situ</i> precipitation method, Ag₃PO₄ nanoparticles were deposited on the surface of the ZnO@C. The samples were characterized by XRD, SEM, Raman, UV-Vis DRS and transient photocurrent responses. The visible light photocatalytic performance of samples was also investigated. The results show that the photocatalytic performance of Ag₃PO₄ can be improved by combining with ZnO@C. Among the samples, AP-Z-5(5%(mass fraction) ZnO@C and Ag₃PO₄) shows the best photocatalytic performance. It can nearly completely degrade methylene blue (MB) after 20min illumination in the presence of 5mg/L Fe(NO₃)₃, and remain 86% degradation rate after 4 cycles. Additionally, AP-Z-5 can degrade MB very well even in the mixed contaminant solution including Cr(VI) and MB.