Enhanced CO₂ conversion in dielectric barrier discharge plasma coupled with a heterojunction photocatalyst

CsPbBr₃ quantum dots were grown on ReS₂ nanosheets to form CsPbBr₃@ReS₂ heterojunctions using an anti-solvent method. The composition, morphology, spatial distribution, and optical absorption of samples were characterized. CsPbBr₃@ReS₂-15 exhibits not only a higher photocatalytic performance than CsPbBr₃ due to the improved optical absorption and Z-scheme charge migration, but also a higher CO₂ conversion ratio (35.60%) and energy efficiency (13.10%) in the dielectric barrier discharge (DBD) plasma due to superior photocatalytic activity, increased micro-discharge time, and improved discharge uniformity. This work provides a strategy for plasma photocatalytic CO₂ conversion.