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2015 ; 5
(ä): 9130
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Light illuminated ?-Fe2O3/Pt nanoparticles as water activation agent for
photoelectrochemical water splitting
#MMPMID25773684
Li X
; Wang Z
; Zhang Z
; Chen L
; Cheng J
; Ni W
; Wang B
; Xie E
Sci Rep
2015[Mar]; 5
(ä): 9130
PMID25773684
show ga
The photoelectrochemical (PEC) water splitting is hampered by strong bonds of H2O
molecules and low ionic conductivity of pure water. The photocatalysts dispersed
in pure water can serve as a water activation agent, which provides an
alternative pathway to overcome such limitations. Here we report that the light
illuminated ?-Fe2O3/Pt nanoparticles may produce a reservoir of reactive
intermediates including H2O2, ·OH, OH(-) and H(+) capable of promoting the pure
water reduction/oxidation half-reactions at cathode and highly
photocatalytic-active TiO2/In2S3/AgInS2 photoanode, respectively. Remarkable
photocurrent enhancement has been obtained with ?-Fe2O3/Pt as water activation
agent. The use of ?-Fe2O3/Pt to promote the reactivity of pure water represents a
new paradigm for reproducible hydrogen fuel provision by PEC water splitting,
allowing efficient splitting of pure water without adding of corrosive chemicals
or sacrificial agent.