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Polymeric Carbon Nitride/Reduced Graphene Oxide/Fe 2 O 3 : All‐Solid‐State Z‐Scheme System for Photocatalytic Overall Water Splitting
Author(s) -
Pan Zhiming,
Zhang Guigang,
Wang Xinchen
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201902634
Subject(s) - graphene , oxide , water splitting , photocatalysis , materials science , carbon nitride , carbon fibers , graphitic carbon nitride , nitride , chemical engineering , nanotechnology , chemistry , composite number , composite material , catalysis , layer (electronics) , metallurgy , engineering , biochemistry
The charge transfer between hydrogen evolution photocatalysts (HEPs) and oxygen evolution photocatalysts (OEPs) is the rate‐determining step that controls the overall performance of a Z‐scheme water‐splitting system. Here, we carefully design reduced graphene oxide (RGO) nanosheets for use as solid‐state mediators to accelerate the charge carrier transfer between HEPs (e.g., polymeric carbon nitride (PCN)) and OEPs (e.g., Fe 2 O 3 ), thus achieving efficient overall water splitting. The important role of RGO could also be further proven in other PCN‐based Z‐systems (BiVO 4 /RGO/PCN and WO 3 /RGO/PCN), illustrating the universality of this strategy.