N-Ag共掺杂二氧化钛及光催化降解聚氯乙烯薄膜  

N-Ag Co-Doped Titanium Dioxide and Photocatalytic Degradation of PVC Films

作　　者：张宇 王井丽 林宇航 杜蕾[3] 王犇[1] ZHANG Yu;WANG Jingli;LIN Yuhang;DU Lei;WANG Ben(School of Environmental and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Wanhua Chemical(Yantai)Chlor-Alkali Thermoelectric Co.,Ltd.,Yantai 264003,China;School of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042 [2]万华化学(烟台)氯碱热电有限公司,山东烟台264003 [3]青岛科技大学化工学院,山东青岛266042

出　　处：《河南化工》2024年第8期5-9,共5页Henan Chemical Industry

摘　　要：使用钛酸四丁酯、尿素、硝酸银等作原料,用溶胶-凝胶的方法制备了不同浓度N和Ag掺杂二氧化钛(TiO_(2))光催化剂。采用红外光谱(FT-IR)、紫外可见漫反射(DRS)和光电子能谱(XPS)的测试方法对TiO_(2)和聚氯乙烯(PVC)薄膜的结构、化学成分以及光学性质进行了表征。把PVC薄膜作为目标降解物,使用紫外灯为光源,研究改性后的TiO_(2)在紫外光照射下的光催化活性。结果表明,N、Ag可有效提高TiO_(2)可见光光催化活性,最佳掺杂比n(Ag)∶n(Ti)=0.3%,n(N)∶n(Ti)=20%,对PVC薄膜的降解效果最好,降解率可达29.37%。TiO_(2)photocatalysts doped with different concentrations of N and Ag are prepared by sol-gel method using tetrabutyl titanate,urea and silver nitrate as material.The structures,chemical compositions and optical properties of TiO_(2)and polyvinyl chloride(PVC)films are characterized by infrared spectroscopy(FT-IR),ultraviolet-visible diffuse reflection(DRS)and photoelectron spectroscopy(XPS).Using PVC film as the target degradation material and UV lamp as the light source,the photocatalytic activity of modified TiO_(2)is studied under ultraviolet irradiation.The results show that N and Ag can effectively improve the photocatalytic activity of TiO_(2)visible light,and the optimal doping ratio is n(Ag)∶n(Ti)=03%,n(N)∶n(Ti)=20%,and the degradation effect of PVC film is the best,and the degradation rate can reach 29.37%.

关 键 词：光催化 溶胶-凝胶法 二氧化钛改性 聚氯乙烯薄膜降解 

分 类 号：TQ426.6[化学工程] TQ426.94