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Title: Significance of an anion effect in the selective oxidation of Ce3+ to Ce4+ over a porous WO3 photoanode

Journal Article · · Electrochimica Acta
 [1];  [1];  [2];  [2];  [1]
  1. National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan). Advanced Functional Material Team. Research Center for Photovoltaics (PCPV)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Division

We report the oxidation of Ce3+ to Ce4+ using a porous WO3 photoanode and a Pt cathode with excellent Faradaic efficiency (FE (Ce4+)) of up to 98% under solar simulated light in an aqueous electrolyte solution containing a high concentration of SO42- anions. The competing side oxidative reactions such as S2O82- and O2 production were found to be suppressed in the presence of Ce3+. The Ce4+ yield (YI (Ce4+)) from Ce3+ reached up to 95%. Also, a noble-metal-free biomass-derived inexpensive electrode was found to be an efficient replacement of the Pt cathode.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1504378
Alternate ID(s):
OSTI ID: 1508175
Report Number(s):
BNL-211493-2019-JAAM
Journal Information:
Electrochimica Acta, Vol. 307; ISSN 0013-4686
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Cited By (1)

Solar-light-driven non-bias photoelectrolysis for bleach production from sea water and atmospheric oxygen journal January 2019