Boosting ethylene yield via a synergistic 2D/0D nanostructured VCu layered double hydroxide/TiO2 catalyst in electrochemical CO2 reduction

Abstract

The electrochemical conversion of CO2 into C1 and C2 hydrocarbons, such as methane and ethylene, is a promising pathway toward achieving net zero carbon emissions; however, owing to the high activation barrier of CO2, this reaction remains a big challenge. In this work, an effective strategy has been developed through the synthesis of a low-cost vanadium- and copper-based layered double hydroxide (LDH) decorated with TiO2 nanoparticles (VCu LDH/TiO2) as a highly efficient electrocatalyst for the electrochemical reduction of CO2 to ethylene. Structural and morphological studies of the developed electrocatalyst were carried out using various analytical techniques such as X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (FESEM), X-ray photoelectron microscopy (XPS) and transmission electron microscopy (TEM), which confirmed the successful formation of VCu LDH/TiO2. The electrochemical CO2 reduction reaction (CO2RR) was performed in 0.1 M KHCO3 using an H-type cell and afforded CO, H2, CH4, and C2H4 as value-added end products. The highest faradaic efficiency of 84% was obtained for C2H4 at −0.4 V vs. RHE. The above results suggest that the VCu LDH/TiO2 NP electrocatalyst may be an excellent candidate for CO2 reduction and can also be utilized in a wide range of energy conversion and storage applications.

Graphical abstract: Boosting ethylene yield via a synergistic 2D/0D nanostructured VCu layered double hydroxide/TiO2 catalyst in electrochemical CO2 reduction

Supplementary files

Article information

Article type
Paper
Submitted
28 Jun 2024
Accepted
16 Sep 2024
First published
18 Sep 2024
This article is Open Access
Creative Commons BY-NC license

Energy Adv., 2024, Advance Article

Boosting ethylene yield via a synergistic 2D/0D nanostructured VCu layered double hydroxide/TiO2 catalyst in electrochemical CO2 reduction

S. S. Lavate and R. Srivastava, Energy Adv., 2024, Advance Article , DOI: 10.1039/D4YA00417E

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