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Photocathode engineering for efficient photobioelectrochemical CO2 reduction to formate

Project description

High-efficiency photocathodes to convert CO2 into formate

Photoelectrochemical reduction of CO2 into fuels and chemical building blocks is a critical step to mitigate global warming while turning away from extracting limited fossil fuels. Funded by the Marie Skłodowska-Curie Actions programme, the PHOTOBIOCATH-CO2 project plans to synthesise novel photocathodes for CO2 reduction to formate. Specifically, it will combine carbon nanotube fibres or reduced graphene oxides and inorganic nanocomposites of p-type semiconductors. A key element of the new hybrid photoelectrodes will be the presence of the formate dehydrogenase enzyme anchored on a highly conductive carbon-based nanomaterial film at the top of the light-absorbing material.

Objective

In this proposal, organic, carbon nanotubes fibres (CNTf) or reduced graphene oxide (RGO),and inorganic, p-type semiconductors or their nanocomposites, nanohybrids are systematically combined in multistep synthetic methods to fabricate novel photocathodes, as well as some counterparts of them (for the purpose of comparison), for studying their efficiency in a photoelectrochemical (PEC) for CO2 reduction to formate. One of the key elements of this hybrid photoelectrode is the presence of the enzyme formate dehydrogenase (FDH) anchored on a highly conductive carbon-based nanomaterial (CNTf or RGO) film at the top of the light absorber that catalyzes the reaction to reduce CO2 to formate. The carbon-based support will provide fast charge transfer from the semiconductor to the biocatalyst, without altering the FDH catalytic center. In other words, for ensuring electron transport between the two key photocathode components), in this project, a carbon nanotube fibre (CNF) or RGO interlayer film will be exploited between the photoactive material and FDH co-catalyst for the first time as a highly conductive platform, which is a prerequisite for technical applications to prevent short-circuiting and leaching of the biocatalyst or mediator species. After evaluation of their PEC activity, the relationship between their structure, synthesis method, and morphology on the one hand and their PEC activity on the another hand will be correlated and discussed. The aim will be selecting the best option as photocathode for designing a photoelectrochemical CO2 reduction reaction (PEC-CO2RR) cell with high efficiency and stability that can alleviate the pollution caused from fossil fuels use. In this way, the design of a photoelectrochemical CO2 reduction reaction (PEC-CO2RR) cell can be accomplished for producing formate, a valuable chemical product due to its wide range of applications.

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2020

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Coordinator

AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 160 932,48
Address
CALLE SERRANO 117
28006 MADRID
Spain

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Comunidad de Madrid Comunidad de Madrid Madrid
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Research Organisations
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 160 932,48
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