Research Progress in DBD Plasma-Catalyzed CO₂ Conversion

The rapid increase in carbon dioxide (CO2) emissions caused by industrialization has triggered a cascade of environmental issues, posing significant threats to human health. In the Carbon Capture, Utilization, and Storage (CCUS) process, the utilization of nonthermal plasma technology to convert CO2 into high-value-added fuels and chemicals offers major advantages, enabling the reaction to proceed under mild conditions. This review examines the advancements made over the past decade in the conversion of CO2 into high-value products using dielectric barrier discharge (DBD) plasma-catalytic technology. The characteristics of DBD plasma devices are outlined, and progress in CO2 conversion to CH3OH, CH4, and CO under the synergistic effects of DBD plasma and catalysts is highlighted. The discussion primarily focuses on the influence of various catalyst types on reaction conversion efficiency and product selectivity. Studies have shown that the combination of DBD plasma technology with catalysts further enhances CO2 conversion efficiency and product selectivity. Cu-based, Ni-based, and Mn-based catalysts are the most commonly used metal catalysts for the synthesis of CH3OH, CH4, and CO, respectively. Finally, the main challenges and future research directions for this technology are identified, providing valuable insights for future industrial applications.