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Surface Plasmon assisted Cu_xO photocatalyst for pure water splitting
Author(s) -
Wen Ting Kung,
Yi Hao Pai,
Yu-Pin Hsu,
Chu Hsuan Lin,
Chih–Ming Wang
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.00a221
Subject(s) - nanoporous , annealing (glass) , materials science , surface plasmon , plasmon , surface plasmon resonance , photocatalysis , wavelength , absorption (acoustics) , optics , attenuated total reflection , analytical chemistry (journal) , optoelectronics , infrared , nanotechnology , nanoparticle , chemistry , composite material , physics , biochemistry , catalysis , chromatography
In this paper, Cu(x)O photocatalyst on plasmonic nanoporous Au film is proposed to enhancing the H(2) evolution rate of pure water splitting. The nanoporous Au film can simultaneously provide surface-enhanced absorption and built-in potential. The reflection spectrum shows that the surface plasmon (SP) assisted absorption wavelength of the Cu(x)O on the nanoporous Au film can be modified by changing the annealing temperature. It is found that the enhancement of the H(2) evolution rate highly depends on the SP-assisted absorption. As the annealing temperature is 220 ° C, the H(2) evolution rate is 58 μmol hr(-1) under the condition that the device area is 0.25 cm(2).

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