Incorporation of Cesium Lead Halide Perovskites into g‑C3N4 for Photocatalytic CO2 Reduction
journal contributionposted on 17.09.2020 by Ruolin Cheng, Handong Jin, Maarten B. J. Roeffaers, Johan Hofkens, Elke Debroye
Any type of content formally published in an academic journal, usually following a peer-review process.
CsPbBr3 perovskite-based composites so far have been synthesized by postdeposition of CsPbBr3 on a parent material. However, in situ construction offers enhanced surface contact, better activity, and improved stability. Instead of applying a typical thermal condensation at highly elevated temperatures, we report for the first time CsPb(BrxCl1–x)3/graphitic-C3N4 (CsPbX3/g-C3N4) composites synthesized by a simple and mild solvothermal route, with enhanced efficacy in visible-light-driven photocatalytic CO2 reduction. The composite exhibited a CO production rate of 28.5 μmol g–1 h–1 at an optimized loading amount of g-C3N4. This rate is about five times those of pure g-C3N4 and CsPbBr3. This work reports a new in situ approach for constructing perovskite-based heterostructure photocatalysts with enhanced light-harvesting ability and improved solar energy conversion efficiency.