CO2 Conversion Synergistically Driven by Radiofrequency Inductively-Coupled Plasma and Lead-Free Halide Perovskite Photocatalyst

The conversion and utilization ofcarbon dioxide (CO2) driven by plasma are promising approachesto achieve the mitigationof the greenhouse effect. In this paper, for the first time, the integrationof radiofrequency inductively coupled plasma (RF-ICP) and lead-freehalide perovskite photocatalysts was investigated to facilitate theCO(2) conversion. The photocatalyst could be modified bythe plasma to improve the catalytic activity of the surface, whilethe photons and vibrationally excited molecules also promote the CO2 conversion in plasma. Compared with the presence of Cu, SiO2, and Cs2TeCl6@SiO2, theradiofrequency plasma filled with Cs2TeCl6@Cuexhibited the best CO2 conversion ratio of 86.5% at a specificenergy of 30 eV/molecule, which is much higher than the work reportedpreviously. This work demonstrates that the synergistic effect betweenRF-ICP and the photocatalyst could effectively improve the reactionefficiency, providing a new opportunity for efficient CO2 conversion in future large-scale practical application.

Automated summary

This paper investigates the integration of radiofrequency inductively coupled plasma (RF-ICP) and lead-free halide perovskite photocatalysts to facilitate CO2 conversion. The plasma modifies the photocatalyst to enhance its catalytic activity, while photons and vibrationally excited molecules also promote CO2 conversion in the plasma. Compared to previous work, the radiofrequency plasma filled with Cs2TeCl6@Cu exhibits the highest CO2 conversion ratio of 86.5% at a specific energy of 30 eV/molecule. This synergistic effect between RF-ICP and the photocatalyst could significantly improve the reaction efficiency, providing new opportunities for efficient CO2 conversion in large-scale practical applications.