Mn-doped CsPb(Br/Cl) <sub>3</sub> mixed-halide perovskites for CO <sub>2</sub> photoreduction
Yuwei Liu, Shaohong Guo, Siqi You, Chunyi Sun, Xinlong Wang, Liang Zhao, Zhong‐Min Su
Abstract
Abstract Halide perovskites have been employed as photocatalysts for CO 2 photoreduction due to their excellent optical properties and unique electronic structure. However, their photocatalytic performance is relatively poor. Herein, we demonstrate a new strategy with Mn-doped CsPb(Br/Cl) 3 mixed-halide perovskites as catalysts to enhance the efficiency of CO 2 photoreduction. By tuning the content of Mn, a series of CsPb(Br/Cl) 3 :Mn perovskites are obtained and show high efficiency in CO 2 conversion to CO and CH 4 . For the optimum catalyst sample, especially, the yields of CO and CH 4 reach 1917 μ mol g −1 and 82 μ mol g −1 which are 14.2 and 1.4 times higher than those of CsPbBr 3 . This work provides new insights into improving the reactivity of perovskites in CO 2 photoreduction.