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Enhanced Charge Separation and Transfer of Fe 2 O 3 @Nitrogen‐Rich Carbon Nitride Tubes for Photocatalytic Water Splitting
Author(s) -
Zhao Chen,
Zheng Mang,
Wang Dan,
Li Qi,
Jiang Baojiang
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202000108
Subject(s) - carbon nitride , water splitting , photocatalysis , nitride , materials science , nitrogen , reagent , catalysis , carbon fibers , photocatalytic water splitting , heterojunction , band gap , hydrogen , chemical engineering , inorganic chemistry , nanotechnology , chemistry , optoelectronics , composite material , composite number , organic chemistry , layer (electronics) , engineering
Carbon nitride is widely used in photocatalytic hydrogen production, but it is still difficult to split water without any sacrificial reagent. Herein, nanosized Fe 2 O 3 is combined with 3D nitrogen‐rich carbon nitride tubes (ACN), to form an Fe 2 O 3 @ACN Z‐scheme heterojunction, which accelerates the electrons’ transfer from Fe 2 O 3 to ACN and improves the charge separation efficiency. Meanwhile, the bandgap of Fe 2 O 3 @ACN is about 2.01 eV, beneficial to the enhancement of visible light absorption capacity. As a result, without any sacrificial agent, the hydrogen evolution rate reaches 3.7 μmol h −1 (10 mg catalyst, AM1.5) through water splitting, which is three times that of ACN and 45 times that of bulk C 3 N 4 (GCN). This work provides a new strategy to prompt pure water splitting based on carbon nitride catalysts.
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