Bipolar Carrier Transfer Channels in Epitaxial Graphene/SiC Core-Shell Heterojunction for Efficient Photocatalytic Hydrogen Evolution.

Lu, Wei; Wang, Da; Guo, Liwei; Jia, Yuping; Ye, Manping; Huang, Jiao; Li, Zhilin; Peng, Yuan et al. · Adv Mater · 2015

basic_science · Level V

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Record sourced from PubMed, PMID 26541083.
Also identified by DOI 10.1002/adma.201503606.
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Abstract

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.

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