Enhancing photochemical reduction via copper-based metamaterial catalysts

Anastasiia Zaleska; Anatoly Zayats; Wayne Dickson

doi:10.1117/12.2687802

4 October 2023 Enhancing photochemical reduction via copper-based metamaterial catalysts

Anastasiia Zaleska, Anatoly Zayats, Wayne Dickson

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Proceedings Volume PC12746, SPIE-CLP Conference on Advanced Photonics 2023; PC127460B (2023) https://doi.org/10.1117/12.2687802
Event: SPIE-CLP Conference on Advanced Photonics, 2023, San Diego, California, United States

Abstract

Hot carriers generated during plasmonic decay in metal nanostructures may be utilised to improve the efficiency of photo-catalytic processes, particularly in combination with a metal oxide to drive photochemical reactions. Here, we report a novel method for the fabrication of core-shell copper/copper oxide nanorods with dimensions designed for an efficient nanocatalyst for the plasmon-driven catalytic conversion of carbon dioxide (CO2) into multi-carbon products. The initial optical properties are determined by the choice of template geometry. However, anodising the copper metamaterial in alkaline electrolytes facilitates the controllable growth of a copper oxide nanoshell. This route not only provides an additional mechanism for tuning the optical properties, but provides a designable catalytic surface over a large surface area opening the door for efficient photo-electrochemical catalysis of CO2. In this work, the fabrication techniques and optical properties.

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Anastasiia Zaleska, Anatoly Zayats, and Wayne Dickson "Enhancing photochemical reduction via copper-based metamaterial catalysts", Proc. SPIE PC12746, SPIE-CLP Conference on Advanced Photonics 2023, PC127460B (4 October 2023); https://doi.org/10.1117/12.2687802

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KEYWORDS

Copper

Oxides

Metamaterials

Carbon dioxide

Fabrication

Optical properties

Plasmonics

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