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Bimental composites for photocatalytic reduction of CO2 to CO in the near-infrared region by SPR effect

Abstract

A major challenge in the field of photocatalytic carbon dioxide (CO2) reduction is to design catalyst systems featuring high selectivity for CO production, long-term stability and a composition of earth-abundant elements. Here, we present a metal-organic framework (MOF) based catalyst to mitigate the mentioned technical problems. We report the carbon-coated CuNi alloy nanocatalyst by vacuum high temperature treatment of MOF material (CuNiBTC). The resulting carbon encapsulated CuNi (denoted as CuNi/C) nanoparticles possess a well-designed core-shell composite structure with graphene shells. Meanwhile, we investigated the reaction mechanism of CO2 on the surface of CuNi/C photocatalyst in aqueous solution containing triethanolamine. The experimental results show that the activity and catalytic yield of CuNi/C are much higher than those of Cu/C and Ni/C alone. At the same time, the catalytic activity of CuNi/C is also affected by changing the reaction temperature in the preparation process. As a result, the CuNi/C samples can achieve near 90% selectivity for NIR-light-driven CO2 reduction to CO. Our approach demonstrates the potential for non-semiconductor materials as catalysts for efficient and selective reduction of CO2 to CO.

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Supplementary files

Article information


Submitted
31 Dec 2019
Accepted
04 Feb 2020
First published
04 Feb 2020

Dalton Trans., 2020, Accepted Manuscript
Article type
Paper

Bimental composites for photocatalytic reduction of CO2 to CO in the near-infrared region by SPR effect

H. jiang, S. Gong, S. xu, P. Shi, J. fan, V. Cecen, Q. Xu and Y. Min, Dalton Trans., 2020, Accepted Manuscript , DOI: 10.1039/C9DT04935E

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