CDPVC/Ag_3PO_4复合光催化剂的制备及性能研究  

Study on preparation and performances of CDPVC/Ag_3PO_4 composite photocatalyst

作　　者：王鹏[1] 张沙沙[1] 张韶蕾 王德松[1] 罗青枝[1] 

机构地区：[1]河北科技大学理学院,河北石家庄050018

出　　处：《河北科技大学学报》2016年第2期173-179,共7页Journal of Hebei University of Science and Technology

基　　金：国家自然科学基金(21271061);河北省自然科学基金(B2014208103)

摘　　要：采用溶液浸渍法制备聚氯乙烯/磷酸银(PVC/Ag_3PO_4)复合微粒,经热处理使PVC脱除HCl得到PVC共轭衍生物/Ag_3PO_4(CDPVC/Ag_3PO_4)复合微粒,采用XRD,SEM,UV-vis DRS,PL和XPS等手段对CDPVC/Ag_3PO_4进行了分析表征。通过甲基橙在可见光下的降解反应,考察制备条件对CDPVC/Ag_3PO_4复合微粒可见光催化性能的影响。结果表明,CDPVC的复合有利于Ag_3PO_4微粒的分散,可以显著提高复合微粒的可见光吸收及光生电子-空穴的分离效率,当PVC占Ag_3PO_4的质量分数为0.03%、热处理温度为130℃、热处理时间为2h时,复合微粒表现出良好的可见光催化活性和稳定性。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 2h,respectively.

关 键 词：催化剂工程 Ag3PO4 聚氯乙烯共轭衍生物 溶液浸渍法 可见光催化 有机污染物降解 

分 类 号：O649.4[理学—物理化学]