Ag_3PO_4/Ag/ZIF-8复合光催化剂的合成及其光催化性能研究  

Synthesis and Research on Photocatalytic Activity of Ag_3PO_4/Ag/ZIF-8 Composites Photocatalyst

作　　者：李东昶 刘建新 樊彩梅[1] 李双志[1] LI Dong-chang;LIU Jian-xin;FAN Cai-mei;LI Shuang-zhi(College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Chin)

机构地区：[1]太原理工大学化学化工学院,太原030024

出　　处：《人工晶体学报》2018年第4期721-726,733,共7页Journal of Synthetic Crystals

基　　金：国家自然科学基金(21676178)

摘　　要：以ZIF-8,Na H_2PO_4和AgNO_3为原料,在室温条件下成功制备出一系列Ag_3PO_4/Ag/ZIF-8复合光催化剂。采用X射线衍射(XRD)、X射线光电子能谱(XPS)、紫外可见漫反射光谱(DRS)以及扫描电子显微镜(SEM)等手段对Ag_3PO_4/Ag/ZIF-8复合催化剂进行了表征分析。通过模拟太阳光下罗丹明B(RhB)降解实验来评价样品的光催化活性。结果表明:Ag_3PO_4/Ag/15%ZIF-8复合光催化剂的光催化活性最好,经过四次循环实验后RhB的降解率仍能达到87%,这归因于Ag_3PO_4与ZIF-8构成的异质结结构的协同作用以及单质Ag的电子传递作用。A series of Ag3PO4/Ag/ZIF-8 composite photocatalysts were successfully synthesized with ZIF-8,NaH2PO4 and AgNO3 as raw materials at room temperature. Products were characterized by X-ray diffraction,X-ray photoelectron spectroscopy,UV-Vis diffuse reflectance spectra and scanning electron microscopy. The photocatalytic activity of the samples were evaluated by degradation of rhodamine B under simulated sunlight irradiation. The experiments show that Ag3PO4/Ag/15% ZIF-8 composite has the best activity and the degradation of RhB rate still reached 87% after four recycle experiments,which are attributed to the synergistic effect of Ag3PO4 and ZIF-8 heterostructure and the electron transfer effect of the elementary substance Ag.

关 键 词：Ag3PO4/Ag/ZIF-8 光催化 磷酸银 ZIF-8 

分 类 号：TQ034[化学工程]