光催化
电子转移
光化学
漆酶
人工光合作用
氧化还原
催化作用
反应性(心理学)
共价键
材料科学
电子顺磁共振
化学
生物传感器
可见光谱
酶催化
化学工程
组合化学
纳米技术
无机化学
有机化学
酶
光电子学
物理
医学
替代医学
病理
核磁共振
工程类
作者
Xiaoxuan Lou,Chen Zhang,Zhiyong Xu,Shengbo Ge,Zhou Jian,Deyu Qin,Fanzhi Qin,Xin Zhang,Zhanhu Guo,Chong‐Chen Wang
出处
期刊:Small
[Wiley]
日期:2024-07-06
被引量:1
标识
DOI:10.1002/smll.202404055
摘要
Abstract Laccase is capable of catalyzing a vast array of reactions, but its low redox potential limits its potential applications. The use of photocatalytic materials offers a solution to this problem by converting absorbed visible light into electrons to facilitate enzyme catalysis. Herein, MIL‐53(Fe) and NH 2 ‐MIL‐53(Fe) serve as both light absorbers and enzyme immobilization carriers, and laccase is employed for solar‐driven chemical conversion. Electron spin resonance spectroscopy results confirm that visible light irradiation causes rapid transfer of photogenerated electrons from MOF excitation to T1 Cu(II) of laccase, significantly increasing the degradation rate constant of tetracycline (TC) from 0.0062 to 0.0127 min −1 . Conversely, there is only minimal or no electron transfer between MOF and laccase in the physical mixture state. Theoretical calculations demonstrate that the immobilization of laccase's active site and its covalent binding to the metal‐organic framework surface augment the coupled system's activity, reducing the active site accessible from 27.8 to 18.1 Å. The constructed photo‐enzyme coupled system successfully combines enzyme catalysis’ selectivity with photocatalysis's high reactivity, providing a promising solution for solar energy use.
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