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Incorporation of Cesium Lead Halide Perovskites into g-C(3)N(4) for Photocatalytic CO(2) Reduction

[Image: see text] CsPbBr(3) perovskite-based composites so far have been synthesized by postdeposition of CsPbBr(3) 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 high...

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Detalles Bibliográficos
Autores principales: Cheng, Ruolin, Jin, Handong, Roeffaers, Maarten B. J., Hofkens, Johan, Debroye, Elke
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7528323/
https://www.ncbi.nlm.nih.gov/pubmed/33015466
http://dx.doi.org/10.1021/acsomega.0c02960
Descripción
Sumario:[Image: see text] CsPbBr(3) perovskite-based composites so far have been synthesized by postdeposition of CsPbBr(3) 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(Br(x)Cl(1–x))(3)/graphitic-C(3)N(4) (CsPbX(3)/g-C(3)N(4)) composites synthesized by a simple and mild solvothermal route, with enhanced efficacy in visible-light-driven photocatalytic CO(2) reduction. The composite exhibited a CO production rate of 28.5 μmol g(–1) h(–1) at an optimized loading amount of g-C(3)N(4). This rate is about five times those of pure g-C(3)N(4) and CsPbBr(3). 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.