Kong X, Gai P, Li F. Biohybrid Cells for Photoelectrochemical Conversion Based on the HCOO
--CO
2 Circulation Approach.
ACS APPLIED BIO MATERIALS 2020;
3:8069-8074. [PMID:
35019546 DOI:
10.1021/acsabm.0c01166]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Biohybrid photoelectrochemical systems could combine the light-harvesting ability of semiconductor photocatalysts and the CO2-processing capability of biocatalysts to realize CO2 reduction. How to develop the energy-utilized model can be of importance for the mechanism exploration of photosynthesis. Here, a biohybrid photoelectrochemical system based on HCOO--CO2 circulation was developed to realize the conversion both of solar-to-electric energy and chemical-to-electric energy. The device consists of a TiO2 nanoparticle photoanode and a laser-scribed graphene/formate dehydrogenase biocathode, which was utilized for the formic acid oxidation and the biocatalysis reduction of CO2 to HCOO-, respectively. The as-proposed biohybrid photoelectrochemical system exhibits good performance with an open-circuit potential of 0.93 V and a maximum power output density of 76 μW cm-2. This ingenious strategy not only exploits a robust carbon circulation system for the conversion of solar energy but also provides a way of constructing complex artificial photosynthesis systems.
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