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Three‐Dimensional Hierarchical Porous Carbon/Graphitic Carbon Nitride Composites for Efficient Photocatalytic Hydrogen Production
Author(s) -
Wang Chenlu,
Liu Guigao,
Song Kai,
Wang Xinqian,
Wang Hang,
Zhao Naiqin,
He Fang
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201901598
Subject(s) - nanosheet , graphitic carbon nitride , photocatalysis , materials science , carbon fibers , hydrogen production , porosity , carbon nitride , chemical engineering , hydrogen , solar fuel , nanotechnology , composite material , catalysis , chemistry , composite number , organic chemistry , engineering
Developing low‐cost, wide‐source, and nontoxicity photocatalysts is highly desirable for application in efficient solar energy conversion. In this work, a series of nanosheet‐assembled three‐dimensional (3D) hierarchical porous carbon/graphitic carbon nitride (3D C/g‐C 3 N 4 ) composites have been successfully synthesized as efficient photocatalysts for hydrogen production. The optimal 3D C/g‐C 3 N 4 shows the largest H 2 evolution rate of 1610 μmol h −1 g −1 , which is nearly seven times that of bulk g‐C 3 N 4 . Such remarkably improved photocatalytic performance is mainly attributed to that: i) the 3D carbon effectively prevents nanosheets from agglomeration as well as serves as high speed channels for electron transport; ii) the interconnected porous network is favorable for the multiple reflections and utilization of light; and iii) the interfacial interaction between g‐C 3 N 4 and 3D carbon is beneficial to the charge separation and transfer.