Constructing a photo-enzymatic cascade reaction and its in situ monitoring: enzymes hierarchically trapped in titania meso-porous MOFs as a new photosynthesis platform

A photocatalysis-enzyme coupled system represents a most promising approach towards artificial photosynthesis and a direct use of solar energy for the synthesis of specific organic molecules or fuel. In contrast to extensively explored semiconductor photocatalysts, studies that successfully combine...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2021-07, Vol.9 (26), p.14911-14919
Main Authors: Guo, Junli, Yang, Lingling, Zhao, Chenxi, Gao, Zhida, Song, Yan-Yan, Schmuki, Patrik
Format: Article
Language:English
Subjects:
Cascade chemical reactions
Catalytic activity
Chemical synthesis
Cytochrome
Cytochrome c
Cytochromes
Enzymes
Membranes
Metal-organic frameworks
Monitoring
Nanochannels
Nuclear fuels
Organic chemistry
Photocatalysis
Photocatalysts
Photosynthesis
Pore size
Solar energy
Titanium
Titanium dioxide
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Summary:A photocatalysis-enzyme coupled system represents a most promising approach towards artificial photosynthesis and a direct use of solar energy for the synthesis of specific organic molecules or fuel. In contrast to extensively explored semiconductor photocatalysts, studies that successfully combine photocatalytic and enzymatic reactions are rare. In the present work we describe a photocatalyst–enzyme coupled approach that relies on the in situ synthesis of a hierarchically porous (hp) metal–organic framework (here using titania-based MIL-125) formed in the nanochannels of a TiO 2 membrane. By engineering the nm-scale pore size in the MOF we achieve trapping of active cytochrome C (CytC). Benefiting from the intrinsic photocatalytic activity of the MOF [MIL-125 (Ti)] we develop a functional photocatalyst–enzyme system that is active under visible light. Moreover, the membrane-based architecture allows for in situ triggering and monitoring of the enzymatic reaction. Therefore, the platform represents not only a nanoscale photocatalytic reactor or device but also allows to monitor and understand photocatalytically coupled enzyme reactions.
ISSN:2050-7488
2050-7496
DOI:10.1039/D1TA04009J