锰
化学
二价
锰过氧化物酶
催化作用
过氧化物酶
离子
固定化酶
无机化学
酶
组合化学
核化学
有机化学
作者
Marcela Vizcarra,Shaily Mahendra,Meng Wang
标识
DOI:10.1016/j.biortech.2023.129897
摘要
Manganese peroxidase (MnP) offers significant potential in various environmental and industrial applications; however, its reliance on Mn2+ ions for electron shuttling limits its use in Mn2+-deficient systems. Herein, a novel approach is presented to address this limitation by co-immobilizing MnP and Mn2+ in silica gels. These gels were synthesized following the standard sol-gel method and found to effectively immobilize Mn2+ ions, primarily through electrostatic interactions. The MnP co-immobilized with Mn2+ ions in the silica gel exhibited 4-5 times higher activity than the MnP immobilized alone in activity assays and generated Mn3+ within the gel, indicating the immobilized Mn2+ ions remain capable of shuttling electrons to the co-immobilized MnP. In decolorization tests with two organic dyes, the co-immobilized system also outperformed the MnP immobilized alone, resulting in 2-4 times more dye removal. This study will enable a broader application of MnP in sustainable environmental remediation and industrial catalysis.
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