Boosting CO<sub>2</sub> Conversion by Synergy of Lead-Free Perovskite Cs<sub>2</sub>SnCl<sub>6</sub> and Plasma with H<sub>2</sub>O
Qiang Huang, Chengfan Fu, Yangyi Shen, Haowen Wang, Zhengben Wu, Zhiyu Liang, Changqing Tian, Daofu Wu, Fei Qi, Yayun Pu, Nan Zhang, Manjing Wang, Xiaosheng Tang
Abstract
Although dielectric barrier discharge (DBD) plasma is a promising technique for CO 2 conversion, realizing CO 2 -to-alcohol is still challenging via the use of H 2 O. Herein, for the first time, efficient CO 2 conversion was achieved via the synergism between the Cs 2 SnCl 6 photocatalyst and DBD plasma assisted by H 2 O. The CO 2 conversion ratio of plasma photocatalysis was 6.5% higher than that of only the plasma and photocatalysis, implying that the synergism of plasma catalysis and photocatalysis was achieved. Furthermore, the DBD plasma assisted by the Cs 2 SnCl 6 photocatalyst could convert CO 2 and H 2 O to CO and a small amount of methanol and ethanol. The CO 2 conversion ratio was enhanced by 50.6% in the presence of H 2 O, which was attributed to the improvement of charge transfer due to the increased electrical conductivity of the photocatalyst surface during plasma discharge. This work provides a new idea for developing an efficient system for CO 2 utilization.