Three-dimensional self-attaching perovskite quantum dots/polymer platform for efficient solar-driven CO2 reduction

A well-designed scaffold that allows the full exposure of nanophotocatalyst to reactants is equally important with an efficient catalyst material in realizing a high-performance photocatalytic reaction. In this work, we develop three-dimensional (3D) bandgap tunable perovskite quantum dots (PQDs)/polyethersulfone (PES) monolithic film maximize specific area and enhance light harvesting, thereby making use PQDs solar-driven CO2 reduction. The are electrostatically self-attached 3D PES minimal agglomeration clustering so can be fully exposed gaseous reactant sustaining its superior high surface/volume ratio. Through composition engineering, small-bandgap I-rich CsPbIxBr3-x along achieve electron consumption rate 64.90 ?mol g?1 h?1, exceeding all reported PQD-based single photocatalysts photoreduction. Our work provides new platform exploit nanomaterials by constructing nanocatalyst/polymer for highly reactions.