Status of CO2 conversion using microwave plasma

As a potential technology, the plasma-based conversion of CO2 comes under the spotlight. The microwave plasma stands out, owing to the high-degree of non-equilibrium that is desired by the vibrational excitation of CO2. This paper is an overview of recent studies to illustrate the state of CO2 conversion in microwave plasma. In this paper, interactions between the CO2 dissociation and operating conditions, such as input power, pressure, temperature, and gas flow, were comprehensively discussed based on a deep understanding of the reaction mechanism. The conversion of CO2 and co-reactants, which makes a difference to the CO2 conversion and production of high value-added compounds, was analyzed and followed with the implementation of catalysts. To sum up, we discussed the prospects and remaining challenges for the further development of CO2 conversion in microwave plasma.