环境工程学报2016，Vol.10Issue(10)：5380-5386,7.DOI:10.12030/j.cjee.201603033
BiVO4联合H2O2或K2S2O8光催化降解布洛芬
Photocatalytic degradation of ibuprofen via BiVO4 combined with H2O2 or K2S2O8
摘要
Abstract
A BiVO4 photocatalyst was prepared by a hydrothermal process and was characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM).The photocatalytic degradation of ibuprofen (IBU) by BiVO4 in the presence of H2O2 or K2S2O8 under simulated solar irradiation was examined,and the optimum dosages of H2O2 and K2S2Os were determined.The photocatalytic degradation mechanism of IBU was studied through quenching experiments.XRD analysis indicated that the prepared photocatalyst corresponded to phase-pure monoclinic scheelite BiVO4.The SEM micrographs indicated that the prepared BiVO4 samples consisted of microspheres.The experimental results showed that both H2O2 and K2S2Os promote the photocatalytic degradation of IBU to some extent,and the optimum dosages of H2O2 and K2S2O8 were 3.0 mmol · L-1 and 1.5 g · L-1,respectively.The degradation mechanism of IBU in the two processes is mainly ascribed to · OH oxidation.A comparison of the contribution of · OH and O2-in the two systems to the degradation rate of IBU showed that the BiVO4 photocatalytic activity in the presence of K2S2O8 was considerably better than that in the presence of H2O2.关键词
BiVO4/H2O2/K2S2O8/布洛芬/动力学/机制Key words
BiVO4/H2O2/K2S2O8/ibuprofen/kinetics/mechanism分类
资源环境引用本文复制引用
李富华,孔青青,康亚璞,林晓璇,王枫亮,陈平,刘国光,吕文英,姚琨..BiVO4联合H2O2或K2S2O8光催化降解布洛芬[J].环境工程学报,2016,10(10):5380-5386,7.基金项目
国家自然科学基金资助项目(21377031) （21377031）
