Issue 8, 2023

Two-dimensional Ti3C2Tx MXene nanosheets for CO2 electroreduction in aqueous electrolytes

Abstract

Electroreduction of carbon dioxide (CO2) to valuable synthons is a sustainable and viable technique to reduce the carbon footprint in the atmosphere. In this work, two-dimensional Ti3C2Tx nanosheets have been investigated for selective CO2 adsorption and its subsequent electroreduction to valuable products in an aqueous electrolyte medium. Various physical and electrochemical characterizations have been performed to ascertain the structural, morphological, and electrocatalytic characteristics of Ti3C2Tx. Ti3C2Tx nanosheets show a CO2 adsorption capacity of 0.16 mmol g−1 under ambient conditions and exhibit a maximum faradaic efficiency of 96% towards CO2 electroreduction to C1 and C2+ products, mainly CO (42.2%), methanol (23.6%), ethanol (20.1%), and acetone (10.1%). Besides, it also shows high catalytic stability for product formation for a tested period of 72 h. This report sheds new light on the design of titanium-based advanced catalysts for efficient CO2 conversion in a benign aqueous medium.

Graphical abstract: Two-dimensional Ti3C2Tx MXene nanosheets for CO2 electroreduction in aqueous electrolytes

Supplementary files

Article information

Article type
Paper
Submitted
16 3 2023
Accepted
02 6 2023
First published
06 6 2023
This article is Open Access
Creative Commons BY license

Energy Adv., 2023,2, 1166-1175

Two-dimensional Ti3C2Tx MXene nanosheets for CO2 electroreduction in aqueous electrolytes

S. Krishnan, S. Marimuthu, M. K. Singh and D. K. Rai, Energy Adv., 2023, 2, 1166 DOI: 10.1039/D3YA00117B

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