文献类型：期刊文献

英文题名：Immobilization of laccase on different functional groups and degree of conjugation modified COFs for simultaneous photochemical-enzymatic removal of 2,4-dichlorophenol and uranium (U(vi))

作者：Zhong, Xin[1];Ji, Zhehong[1];Ling, Qian[1];Sun, Lifu[1];Hu, Baowei[1]

机构：[1]Shaoxing Univ, Sch Life & Environm Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China

年份：2025

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：SCI-EXPANDED(收录号：WOS:001395513500001)、、WOS

基金：Financial support from the Research Fund Program of National Natural Science Foundation of China (No. 22106107) and Natural Science Foundation of Zhejiang Province (LY23B070003) are gratefully acknowledged.

语种：英文

外文摘要：To fabricate an efficient photocatalyst-enzyme hybrid system (PEHS), laccase immobilization of covalent organic frameworks (COFs) with different pore sizes as well as pore environments was performed to investigate the catalytic performance of simultaneous uranium (U(vi)) photoreduction and 2,4-dichlorophenol (2,4-DCP) photooxidation. The results indicated that (i) Lac@COFs showed satisfactory removal of 2,4-DCP, and the regulation of conjugation degrees and functional groups significantly enhanced the photocatalytic reduction removal performance of U(vi); (ii) the heterogeneous phase Lac@COFs generated a large number of reactive species, such as h+, e-, (center dot)O2-, (OH)-O-center dot and H2O2, which were used for 2,4-DCP degradation and the U(vi) reduction under visible light; (iii) meanwhile, Cu ions at the T1 active site in laccase absorbed e- from 2,4-DCP to further promote the U(vi) photoreduction. Thus, the coupling of laccase immobilization and photocatalytic COFs has led to efficient synergistic removal performance with practical applications. Organic/inorganic pollutants can be removed simultaneously in the enzyme-catalyzed and photocatalytic processes, showing excellent pollutant removal effects.