Two-dimensional metal carbides for electro- and photocatalytic CO2 reduction: Review. (January 2022)

• Record Type: Journal Article
• Authors: Powar, Niket S.; Hiragond, Chaitanya B.; Bae, Dowon; In, Su-Il
• Is Part Of: Journal of CO₂ utilization. Volume 55(2022)
• Publication Date: 2022-01
• Subjects: Transition metal carbides -- CO2 reduction -- Electrocatalysis -- Photocatalysis; Carbon dioxide -- Periodicals; Carbon dioxide -- Environmental aspects -- Periodicals; Carbon dioxide mitigation -- Periodicals; Carbon dioxide; Carbon dioxide -- Environmental aspects; Carbon dioxide mitigation; Periodicals; 628.53205
• DOI: 10.1016/j.jcou.2021.101814
• Languages: English
• ISSNs: 2212-9820

Abstract

Graphical abstract: The transition metal carbide materials can be used as electro and photocatalyst for CO2 reduction. Hence, the present article focuses on the theoretical and experimental studies of different transition metal carbides for CO2 reduction. Highlights: Comprehensive overview of CO2 reduction to the value-added product formation by 2D transition metal carbides. 2D layered transition metal carbide attributes high redox surface area; it helps for the electrochemical CO2 reduction. The 2D transition metal carbide can be a potential co-catalyst due to effective charge separation and transportation. A brief overview of the CO2 reduction mechanism using density functional theory. Abstract: Two-dimensional metal carbides have recently emerged as a promising catalyst for photo- and electrocatalytic CO2 reduction processes due to their high surface area to volume ratio and the vast number of active sites. The surface engineering of transition metal carbides (TMCs) governs the selectivity of specific hydrocarbon formation via a CO2 reduction reaction. Herein, we briefly discuss theoretical models based on the Density Functional Theory (DFT) studies and practical perspective on optimizing surface engineered TMCs and their composites, including tungsten carbide (WC), titanium carbide (TiC), and molybdenum carbide (MoC). In this consolidated review, we provide a reference guide to the key aspects and the most recent data on the properties of 2D metal carbides for the development of an efficient catalyst for photo- and electrocatalytic CO2 reduction.