Recent progress in CO2 splitting processes with non-thermal plasma-assisted

Abstract

The conversion of CO₂ into CO is a crucial strategy to mitigate some of climate change's adverse effects and produce syngas. The dielectric barrier discharge (DBD) plasma is a promising technique in CO₂ decomposition. However, challenges persist, such as low conversion rates and energy efficiency. This paper summarizes current research advances in plasma-catalyzed CO₂ decomposition reactions and the recent optimization of the DBD plasma-catalytic system. The methods to improve the conversion rate and energy efficiency of the CO₂ decomposition reaction are analyzed from four aspects: reactor design, operation parameters, discharge gas composition, filling materials and catalysts. It highlights the primary methods for promoting the reaction performance in the plasma-catalyzed system. Finally, the mechanisms of plasma-catalyzed CO₂ decomposition reactions are discussed from the aspects of gas-phase reaction and surface reaction, and the strategies for improving plasma-catalyzed CO₂ decomposition in the future are proposed.