Abstract
Photocatalytic activation of peroxymonosulfate(PMS)has garnered a lot of interest in the field of wastew-ater treatment.Herein,a plasmonic Ag nanoparticles decorated MIL-101(Fe)hybrid was synthesized through a photodeposition process.Upon light irradiation,the Ag/MIL-101(Fe)exhibit reinforced pho-tocatalytic activities for elimination of bisphenol A(BPA)with PMS.The optimized 2.0％Ag/MIL-101(Fe)composite presented the highest photocatalytic activity with kinetic constant k of 0.102 min-1,which was about 10-fold of the pristine MIL-101(Fe).Loading of plasmonic Ag into MIL-101(Fe)boosts photoinduced carrier separation and accelerates PMS activation to generate strong oxidative radicals.Photoelectrochem-ical tests and multiple spectroscopic studies confirmed the promoted charge carrier separation and trans-fer capability of Ag/MIL-101(Fe).Combining the results of radical trapping experiments and electron spin resonance(ESR),the formed SO4·-,·OH,·O2-and1O2had a significant role in the photocatalytic process.According to intermediate study,the degradation pathway was studied,and the possible mechanism was proposed.
基金项目
河北省自然科学基金(B2020202044)
Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering,MOE,China(KLIEEE-21-04)
NETL
NSTL
万方数据