生物质负载ZIF-67衍生复合材料催化过硫酸盐降解双酚A  

Biomass immobilized ZIF-67 derived composites for degrading bisphenol A by activating peroxymonosulfate

作　　者：欧昌进[1] 袁素涓 吴雨薇 秦娟 石健[1] 廖志鹏 OU Changjin;YUAN Sujuan;WU Yuwei;QIN Juan;SHI Jian;LIAO Zhipeng(Nantong Key Laboratory of Intelligent and New Energy Materials,School of Chemistry and Chemical Engineering,Nantong University,Nantong,226019,China)

机构地区：[1]南通大学化学化工学院,南通智能与新能源材料及器件重点实验室,南通226019

出　　处：《环境化学》2022年第11期3789-3798,共10页Environmental Chemistry

基　　金：国家自然科学基金青年项目(51802162,51708302);江苏省自然科学基金青年项目(BK20180955);江苏省水利科技项目(2020043);南通大学大型仪器设备开放基金(KFJN2123)资助

摘　　要：过硫酸盐(PMS)高级氧化法在降解新型有机微污染物中展现出独特的性能优势.本实验以生物质狗尾草原位负载ZIF-67为前驱体,高温热解制备了复合材料,并开展了其催化过硫酸盐降解微污染物双酚A(BPA)的性能研究.研究表明,ZIF-67均匀地负载于生物质狗尾草表面.分析优化了复合催化材料的负载量,并考察了降解实验参数如复合催化材料投加量、PMS投加量和反应溶液pH等对BPA去除率的影响.在本实验条件下,当复合催化材料投加量为0.1 g·L^(−1)、PMS投加量为0.14 g·L^(−1)、反应pH 8.03时,对20 g·L^(−1)BPA的降解效果最优,去除率高达98.65%.本研究为催化PMS降解水中有机微污染物的高性能催化材料提供了新的设计策略.Peroxymonosulfate(PMS)based advanced oxidation technology has shown distinctive advantages in degrading emerging organic micropollutants.In this work,a composite material was fabricated by the pyrolysis of a precursor,which prepared by in situ growing ZIF-67 on the surface of biomass setaria.The catalytic performance of the obtained composite material for activating PMS toward degrading micropollutants Bisphenol A(BPA)was investigated.The results indicate that the ZIF-67 nanoparticles were uniformly dispersed on the surface of biomass setaria.The loading amount of composite material was optimized.Besides,the influence of experimental parameters i.e.catalyst and PMS dosage as well as the pH value on BPA degradation were investigated.The optimized degradation performance of 98.65%toward 20 mg·L^(−1)BPA was achieved,under the condition of catalyst dosage of 0.1 g·L^(−1),PMS dosage of 0.14 g·L^(−1)and the pH at 8.03.This work supplies a novel strategy of designing highly performed catalyst for PMS toward degrading organic micropollutants in water.

关 键 词：生物质 金属有机框架 过硫酸盐 微污染物 高级氧化 双酚A. 

分 类 号：TQ426[化学工程] TB332[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]