Laccase-functionalized magnetic framework composite enabled chlorophenols degradation,a potential remediation for fungicides residues in leather

作     者：Min Cao Jie Yu Xing Zhang Yamei Lin He Huang 

作者机构：School of Food Science and Pharmaceutical EngineeringNanjing Normal UniversityNanjing 210023People’s Republic of China Schoolof Pharmaceutical SciencesNanjing Tech UniversityNanjing 210009People’s Republic of China 

出 版 物：《Journal of Leather Science and Engineering》 (皮革科学与工程（英文）)

年 卷 期：2022年第4卷第1期

页      面：299-309页

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：the National Key Research and Development Project(Grant No.2021YFC2100100) 

主　　题：Zeolitic metal azolate framework-7(MAF-7) Laccase Magnetic nanoparticles(MNPs) Lac/MNP@MOM 2,4-dichlorophenol(2,4-DCP) 

摘      要：Chlorophenols,used as the fungicides in leather,are strictly limited in leather *** this work,a metal-organic framework material,zeolitic metal azolate framework-7(MAF-7),was first used to encapsulate laccase(Lac)to prepare MAF-7/Lac bio-composites with 98.5%immobilization ***,Lac/MNP@MOM was formed by introducing the magnetic nanoparticles(MNPs)into the Lac@***-7 with better hydrophilicity and stronger pH buffering ability,exhibits good compatibility with laccase,which can reserve the activity of laccase after ***,the porous structure of MAF-7 is favorable for the sufficient contact between laccase and ***/MNP@MOM exhibited excellent activity when exposed to high temperature,extreme pH,and organic solvents,which also simplified complex recovery ***,the degradation rate of 2,4-dichlorophenol(2,4-DCP)could reach as high as 97%within 24 h by immobilized laccase,and after nine consecutive cycles of operation,enzyme activity could remain over 80%,which gives it the potential for practical applications.