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Graphene‐Sensitized Perovskite Oxide Monolayer Nanosheets for Efficient Photocatalytic Reaction
Author(s) -
Li Di,
Zhao Huaping,
Li Longhua,
Mao Baodong,
Chen Min,
Shen Hao,
Shi Weidong,
Jiang Deli,
Lei Yong
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201806284
Subject(s) - nanosheet , materials science , photocatalysis , monolayer , graphene , visible spectrum , band gap , oxide , perovskite (structure) , photosensitizer , photochemistry , nanomaterials , chemical engineering , nanotechnology , optoelectronics , catalysis , chemistry , organic chemistry , engineering , metallurgy
Efficient visible light harvesting and fast charge transfer are of high importance for solar‐energy conversion over semiconducting metal oxide photocatalysts. Here, a proof‐of‐concept strategy is developed to enable visible‐light photocatalytic activity of wide bandgap Ca 2 Nb 3 O 10 monolayer nanosheet by incorporation of reduced graphene oxide (RGO) nanosheet as a photosensitizer. The Ca 2 Nb 3 O 10 monolayer nanosheet/RGO 2D–2D nanohybrids exhibit largely elevated performance in photocatalytic H 2 evolution with a H 2 production rate of 820.76 µmol h −1 g −1 and tetracycline hydrochloride degradation reactions under the visible light irradiation. The combined experimental and theoretical results demonstrate that the electrons generated from the photoexcited RGO transfer to the Ca 2 Nb 3 O 10 monolayer nanosheet and then participate in the photocatalytic reactions. The constructed RGO sensitized monolayer perovskite photocatalyst nanohybrids are demonstrated as an efficient photosensitizer for enhancing visible light harvesting of wide bandgap semiconductor in solar‐energy conversion, and elaborated in details of the charge transfer process of this type of nanohybrid photocatalyst.