In Situ Formation of Bismuth‐Based Perovskite Heterostructures for High‐Performance Cocatalyst‐Free Photocatalytic Hydrogen Evolution - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Advanced Functional Materials Année : 2020

In Situ Formation of Bismuth‐Based Perovskite Heterostructures for High‐Performance Cocatalyst‐Free Photocatalytic Hydrogen Evolution

Résumé

Solar‐to‐fuel conversion with organic–inorganic hybrid halide perovskites has attracted growing attention as a result of their excellent optoelectronic properties as well as the low temperature of the solution based fabrication process. However, the most comprehensively developed hybrid perovskite materials are comprised of the toxic metal lead, raising concerns about environmental health threats. Herein, a lead‐free bismuth (Bi)‐based hybrid perovskite showing in situ growth of heterojunctions is successfully developed at the interface of methylammonium bismuth iodide (MA3Bi2I9) and tri(dimethylammonium) hexa‐iodobismuthate (DMA3BiI6) by a facile solvent engineering technique. The air‐stable MA3Bi2I9/DMA3BiI6 perovskite heterostructure with enhanced photoinduced charge separation exhibit outstanding visible‐light‐induced photocatalytic activity for H2 evolution in aqueous hydrogen iodide solution. The powdered MA3Bi2I9/DMA3BiI6 heterostructured composite (BBP‐5) shows a H2 evolution rate of 198.2 µmol h−1 g−1 without the addition of Pt co‐catalysts under 100 mW cm−2 of visible‐light (λ ≥ 420 nm) illumination.
Fichier principal
Vignette du fichier
Tang et al - 2020 - In-situ formation of bismuth-based perovskite heterostructures - Final.pdf (2.46 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03193747 , version 1 (09-04-2021)

Identifiants

Citer

Yunqi Tang, Chun Hong Mak, Rugeng Liu, Zuankai Wang, Li Ji, et al.. In Situ Formation of Bismuth‐Based Perovskite Heterostructures for High‐Performance Cocatalyst‐Free Photocatalytic Hydrogen Evolution. Advanced Functional Materials, 2020, 30 (52), pp.2006919. ⟨10.1002/adfm.202006919⟩. ⟨hal-03193747⟩
87 Consultations
453 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More