Study on preparation and performances of CDPVC/Ag3PO4 composite photocatalyst

• Main Authors: Peng WANG, Shasha ZHANG, Shaolei ZHANG, Desong WANG, Qingzhi LUO
• Format: Article
• Language: zho
• Published: Hebei University of Science and Technology 2016-04-01
• Series: Journal of Hebei University of Science and Technology
• Subjects: catalyst engineering; Ag3PO4; conjugated derivative of PVC; solution-dipping method; visible-light photocatalysis; degradation of organic pollutants
• Online Access: http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201602010&flag=1&journal_

PVC/Ag3PO4 composites are prepared by solution-dipping method, and the as-prepared composites are heat-treated to release HCl from PVC molecules to obtain conjugated derivative of PVC/Ag3PO4(CDPVC/Ag3PO4) composites. The CDPVC/Ag3PO4 composites are characterized by XRD, SEM, UV-vis DRS, PL and XPS. The effects of preparation conditions on the visible-light photocatalytic performances of CDPVC/Ag3PO4 composites are investigated by evaluating the decomposition of methyl orange under visible light irradiation. The results reveal that the modification of CDPVC is beneficial to the dispersion of Ag3PO4 particles, and it can obviously improve the absorbance of the CDPVC/Ag3PO4 composites in the range of visible light and the charge separation efficiency. The CDPVC/Ag3PO4 composites exhibit excellent visible-light photocatalytic acitivity and stability when the mass percentage of PVC to Ag3PO4, heat-treatment temperature and time are 0.03%, 130 ℃, and 2 h, respectively.