Amino‐Assisted Anchoring of CsPbBr<sub>3</sub> Perovskite Quantum Dots on Porous g‐C<sub>3</sub>N<sub>4</sub> for Enhanced Photocatalytic CO<sub>2</sub> Reduction
Man Ou, Wenguang Tu, Shengming Yin, Weinan Xing, Shuyang Wu, Haojing Wang, Shipeng Wan, Qin Zhong, Rong Xu
Abstract
Abstract Halide perovskite quantum dots (QDs) have great potential in photocatalytic applications if their low charge transportation efficiency and chemical instability can be overcome. To circumvent these obstacles, we anchored CsPbBr 3 QDs (CPB) on NH x ‐rich porous g‐C 3 N 4 nanosheets (PCN) to construct the composite photocatalysts via N−Br chemical bonding. The 20 CPB‐PCN (20 wt % of QDs) photocatalyst exhibits good stability and an outstanding yield of 149 μmol h −1 g −1 in acetonitrile/water for photocatalytic reduction of CO 2 to CO under visible light irradiation, which is around 15 times higher than that of CsPbBr 3 QDs. This study opens up new possibilities of using halide perovskite QDs for photocatalytic application.