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Nitrogen‐Doped Graphene Oxide Quantum Dots as Photocatalysts for Overall Water‐Splitting under Visible Light Illumination
Author(s) -
Yeh TeFu,
Teng ChiaoYi,
Chen SheanJen,
Teng Hsisheng
Publication year - 2014
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.201305299
Subject(s) - materials science , graphene , quantum dot , water splitting , oxide , visible spectrum , nitrogen , photochemistry , doping , photocatalysis , irradiation , optoelectronics , carbon fibers , carbon quantum dots , nanotechnology , catalysis , composite number , chemistry , biochemistry , physics , organic chemistry , nuclear physics , metallurgy , composite material
Nitrogen‐doped graphene oxide quantum dots exhibit both p‐ and n‐type conductivities and catalyze overall water‐splitting under visible‐light irradiation. The quantum dots contain p‐n type photochemical diodes, in which the carbon sp 2 clusters serve as the interfacial junction. The active sites for H 2 and O 2 evolution are the p‐ and n‐domains, respectively, and the reaction mimics biological photosynthesis.