Study on synthesis and the CO2 electrochemical reduction of Cu nanomaterials

Hai Thanh Phan, Trung Mien Thi Huynh

Abstract


Electrochemical reduction is considered as one of the simple and effective methods with respect to the CO2 conversion to value-added chemicals. With this regard, on the study of novel catalysts plays a crucial role for overcoming the chemical inertness and enhance the CO2 conversion efficiency. In this paper, nano Cu based highly efficient electrocatalysts for CO2 redution are developed by electrochemical deposition from the Cu2+ containing electrolyte. Crystalline structure and morphology of all synthesized Cu nanomaterials are characterized by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). Accordingly, all obtained Cu nanomaterials consist of both nanocuboid and dendritic features. The catalytic capability for CO2 reduciton of the fabricated Cu nanomaterials is determined upon using linear sweep voltametry (LSV) method. As a result, the sample electrodeposited for 240s exhibits the highest catalytic characteristics among others with the approximate efficiency of 85 % at the reduction potential of E = -0.5 V so với Ag/AgCl.

Keywords


nano Cu material; electrocatalyst; CO2 reduction; electrochemical deposition; time dependence

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References


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DOI: https://doi.org/10.51316/jca.2023.023

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