Visible light-driven oxidation of non-native substrate by laccase attached on Ru-based metal-organic frameworks  

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作  者:Wenguang Huang Wentao Zhang Guantongyi Chen Yun Chen Jun Ma Dawei Huang Qinzheng Zhaoc Bingdang Wu 

机构地区:[1]State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment,South China Institute of Environmental Sciences,Ministry of Ecology and Environment of PRC,Guangzhou 510655,China [2]Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China [3]School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215002,China [4]Key Laboratory of Suzhou Sponge City Technology,Suzhou 215002,China

出  处:《Journal of Environmental Sciences》2024年第3期741-753,共13页环境科学学报(英文版)

基  金:supported by the National Natural Science Foundation of China (No.21906078);the Central Public-Interest Scientific Institution Basal Research Fund of China (No.PM-zx703–202204–104);the Gusu Innovation and Entrepreneurship Leading Talent Plan (No.ZXL2022500)。

摘  要:Light-induced electron transfer can broaden the substrate range of metalloenzyme.However,the efficiency of photo-enzyme coupling is limited by the poor combination of photosensitizer or photocatalyst with enzyme.Herein,we prepared the nano-photocatalyst MIL-125-NH_(2)@Ru(bpy)by in site embedding ruthenium pyridine-diimine complex[Ru(bpy)_(3)^(2+)into metal organic frameworks MIL-125-NH_(2)and associated it with multicopper oxidase(MCO)laccase.Compared to[Ru(bpy)_(3)]^(2+),the coupling efficiency of MIL-125-NH_(2)@Ru(bpy)_(3)for enzymatic oxygen reduction increased by 35.7%.A series of characterizations confirmed that the amino group of laccase formed chemical bonds with the surface defects or hydrophobic groups of MIL-125-NH_(2)@Ru(bpy)_(3).Consequently,the tight binding accelerated the quenching process and electron transfer between laccase and the immobilized ruthenium pyridine-diimine complex.This work would open an avenue for the synthesis of MOFs photocatalyst towards photo-enzyme coupling.

关 键 词:LACCASE Light-driven biocatalysis Ruthenium photocatalyst Metal-organic frameworks Enzyme immobilization 

分 类 号:TQ426[化学工程] X505[环境科学与工程—环境工程]

 

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