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Bipolar Carrier Transfer Channels in Epitaxial Graphene/SiC Core–Shell Heterojunction for Efficient Photocatalytic Hydrogen Evolution
Author(s) -
Lu Wei,
Wang Da,
Guo Liwei,
Jia Yuping,
Ye Manping,
Huang Jiao,
Li Zhilin,
Peng Yuan,
Yuan Wenxia,
Chen Xiaolong
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201503606
Subject(s) - materials science , graphene , heterojunction , photocatalysis , epitaxy , optoelectronics , nanotechnology , chemical engineering , catalysis , biochemistry , chemistry , engineering , layer (electronics)
Bipolar carrier transfer channels exist in the in situ epitaxial‐graphene‐wrapped 6H‐SiC core–shell heterojunction due to the self‐doping of graphene. Due to the special interface structure and high graphene quality, this material exhibits significant photocatalytic enhancement. Its hydrogen evolution efficiency is greater than that of the Pt/SiC composite. This micrometer‐sized metal‐free photocatalyst exhibits an activity comparable to that of metal‐based nanophotocatalysts.