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

被引：0
|
作者：
Huang W. [1 ]
Zhang W. [2 ]
Chen G. [1 ]
Chen Y. [1 ]
Ma J. [1 ]
Huang D. [1 ]
Zhao Q. [3 ]
Wu B. [3 ,4 ]
机构：
[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
[2] Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen
[3] School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou
[4] Key Laboratory of Suzhou Sponge City Technology, Suzhou
来源：
Journal of Environmental Sciences (China) | 2024年 / 137卷
基金：
中国国家自然科学基金;
关键词：
Enzyme immobilization; Laccase; Light-driven biocatalysis; Metal-organic frameworks; Ruthenium photocatalyst;
D O I：
10.1016/j.jes.2023.02.047
中图分类号：
学科分类号：
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-NH2@Ru(bpy) by in site embedding ruthenium pyridine-diimine complex [Ru(bpy)3]2+ into metal organic frameworks MIL-125-NH2 and associated it with multicopper oxidase (MCO) laccase. Compared to [Ru(bpy)3]2+, the coupling efficiency of MIL-125-NH2@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-NH2@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. © 2023
引用
收藏
页码：741 / 753
页数：12
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