Research on photoelectrocatalytic carbon dioxide reduction based on carbon wood photothermal cathode

Jun Zhang; Tao Li; Xiaotian Li; Ankang Fang

doi:10.1117/12.3024972

8 February 2024 Research on photoelectrocatalytic carbon dioxide reduction based on carbon wood photothermal cathode

Jun Zhang, Tao Li, Xiaotian Li, Ankang Fang

Proceedings Volume 13066, International Conference on Optoelectronic Materials and Devices (ICOMD 2023); 130660N (2024) https://doi.org/10.1117/12.3024972
Event: 2023 International Conference on Optoelectronic Materials and Devices (COMD 2023), 2023, Chongqing, China

Abstract

A photothermal electrode was prepared using carbon wood as the substrate and carbon-nitrogen-iron as the catalyst, harnessing the excellent photothermal properties of carbon wood to facilitate CO₂ reduction. First, we analyzed the structural features of carbon wood. It possesses an abundance of vertical microchannels that favor material transport. Additionally, its high surface area and mesoporous structure provide suitable sites for the reaction. Secondly, the photothermal properties of carbon wood were investigated, showing its efficient light absorption and photothermal conversion capabilities, allowing effective utilization of solar energy. Finally, a photothermal-assisted CO₂ reduction system was constructed, using titanium dioxide as the photoanode and carbon wood loaded with carbon-nitrogen-iron as the photothermal cathode. Solar irradiation effectively increased the reaction temperature, enabling the carbon-nitrogen-iron catalyst, which exhibits a thermal response effect, to perform more efficiently. Further studies revealed that rapid evaporation of the solution at the carbon wood cathode created a favorable three-phase interfacial microenvironment for CO₂ reduction, enhancing the reaction efficiency. As a result, the CO yield reached 40.8 μmol cm^-2 h^-1, which was 5.9 times higher than that achieved under non-photothermal conditions.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jun Zhang, Tao Li, Xiaotian Li, and Ankang Fang "Research on photoelectrocatalytic carbon dioxide reduction based on carbon wood photothermal cathode", Proc. SPIE 13066, International Conference on Optoelectronic Materials and Devices (ICOMD 2023), 130660N (8 February 2024); https://doi.org/10.1117/12.3024972

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