Composite of CsPbBr<sub>3</sub> with Boron Imidazolate Frameworks as an Efficient Visible-Light Photocatalyst for CO<sub>2</sub> Reduction
Zhenyu Chen, Qin‐Long Hong, Hai‐Xia Zhang, Jian Zhang
Abstract
Improving the stability and charge transportation efficiency of lead halide perovskites is the key for their practical photocatalytic applications. Herein, we designed and synthesized a microporous boron imidazolate framework (BIF-122-Co) by cross-linking boron imidazolate ligands and benzene carboxylate with metal ions, which was further used as a host matrix to encapsulate CsPbBr3 perovskite via a sequential deposition route to obtain a composite material, CsPbBr3/BIF-122-Co. Due to the intimate host–guest interfacial contact in the composite material, BIF-122-Co not only provided a physical protective barrier for CsPbBr3 but also accelerated the photoinduced charge separation process in the photocatalytic CO2 reduction reaction. The work provided a guide for exploration of excellent perovskite/metal–organic framework (MOF) composites.