首页|Efficient photocatalytic NADH regeneration with Rh-loaded Z-scheme mediator-free system
Efficient photocatalytic NADH regeneration with Rh-loaded Z-scheme mediator-free system
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Nicotinamide adenine dinucleotide(NADH)regeneration is necessary for the sustainable application of enzymatic industry.The Rh-based complex[Cp*Rh(bpy)(H)]+has been widely used as an important me-diator in NADH regeneration systems,but it is limited by complexity and high cost.Here,a Z-scheme was constructed by loading Rh onto carbon nitride nanosheets/carbon nitride quantum dots(CN-CNQD).The resultant catalyst achieved a high yield of NADH in a mediator-free(M-free)system of 0.283 mmol L-1 g-1 min-1,which is 5.29 times that of pure CN.ADH enzyme introduction experiments confirmed that the enzyme active product 1,4-NADH could reach 34.21％selectivity in the M-free system.Mecha-nism research revealed that the heterojunction between CNs and CNQDs improved the NADH regener-ation activity in the traditional M-involved system,while Rh loading was proved to optimize the yield and selectivity of 1,4-NADH in M-free system.The immobilized Rh shows more competitiveness than[Cp*Rh(bpy)(H)]+.This study contributes to the construction of an M-free system for further application in greener,lower-cost enzymatic processes.
Yi Zhou、Yiling He、Ming Gao、Ningkai Ding、Juying Lei、Yanbo Zhou
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State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,East China University of Science and Technology,Shanghai 200237,China
National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery,East China University of Science and Technology,Shanghai 200237,China
Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China
Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization,East China University of Science and Technology,Shanghai 20023
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国家自然科学基金Open Project of State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology上海市科委项目Shanghai Municipal Science and Technology
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