Significance of an anion effect in the selective oxidation of Ce 3+ to Ce 4+ over a porous WO 3 photoanode

Soichi Takasugi, Yugo Miseki, Kotaro Sasaki, Etsuko Fujita, Kazuhiro Sayama

Research output: Contribution to journalArticle

Abstract

Herein we report the oxidation of Ce 3+ to Ce 4+ using a porous WO 3 photoanode and a Pt cathode with excellent Faradaic efficiency (FE (Ce 4+ )) of up to 98% under solar simulated light in an aqueous electrolyte solution containing a high concentration of SO 4 2− anions. The competing side oxidative reactions such as S 2 O 8 2− and O 2 production were found to be suppressed in the presence of Ce 3+ . The Ce 4+ yield (YI (Ce 4+ )) from Ce 3+ reached up to 95%. Also, a noble-metal-free biomass-derived inexpensive electrode was found to be an efficient replacement of the Pt cathode.

Original languageEnglish
Pages (from-to)369-374
Number of pages6
JournalElectrochimica Acta
Volume307
DOIs
Publication statusPublished - Jun 1 2019

Fingerprint

Anions
Cathodes
Negative ions
Oxidation
Precious metals
Electrolytes
Biomass
Electrodes

Keywords

  • Anion effect
  • Biomass
  • Ce /Ce
  • Electrochemistry
  • Photocatalysis
  • Photooxidation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Significance of an anion effect in the selective oxidation of Ce 3+ to Ce 4+ over a porous WO 3 photoanode . / Takasugi, Soichi; Miseki, Yugo; Sasaki, Kotaro; Fujita, Etsuko; Sayama, Kazuhiro.

In: Electrochimica Acta, Vol. 307, 01.06.2019, p. 369-374.

Research output: Contribution to journalArticle

Takasugi, Soichi ; Miseki, Yugo ; Sasaki, Kotaro ; Fujita, Etsuko ; Sayama, Kazuhiro. / Significance of an anion effect in the selective oxidation of Ce 3+ to Ce 4+ over a porous WO 3 photoanode In: Electrochimica Acta. 2019 ; Vol. 307. pp. 369-374.
@article{cbb4bf8333624d43802f1eb6aa4dc0fc,
title = "Significance of an anion effect in the selective oxidation of Ce 3+ to Ce 4+ over a porous WO 3 photoanode",
abstract = "Herein we report the oxidation of Ce 3+ to Ce 4+ using a porous WO 3 photoanode and a Pt cathode with excellent Faradaic efficiency (FE (Ce 4+ )) of up to 98{\%} under solar simulated light in an aqueous electrolyte solution containing a high concentration of SO 4 2− anions. The competing side oxidative reactions such as S 2 O 8 2− and O 2 production were found to be suppressed in the presence of Ce 3+ . The Ce 4+ yield (YI (Ce 4+ )) from Ce 3+ reached up to 95{\%}. Also, a noble-metal-free biomass-derived inexpensive electrode was found to be an efficient replacement of the Pt cathode.",
keywords = "Anion effect, Biomass, Ce /Ce, Electrochemistry, Photocatalysis, Photooxidation",
author = "Soichi Takasugi and Yugo Miseki and Kotaro Sasaki and Etsuko Fujita and Kazuhiro Sayama",
year = "2019",
month = "6",
day = "1",
doi = "10.1016/j.electacta.2019.03.178",
language = "English",
volume = "307",
pages = "369--374",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Significance of an anion effect in the selective oxidation of Ce 3+ to Ce 4+ over a porous WO 3 photoanode

AU - Takasugi, Soichi

AU - Miseki, Yugo

AU - Sasaki, Kotaro

AU - Fujita, Etsuko

AU - Sayama, Kazuhiro

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Herein we report the oxidation of Ce 3+ to Ce 4+ using a porous WO 3 photoanode and a Pt cathode with excellent Faradaic efficiency (FE (Ce 4+ )) of up to 98% under solar simulated light in an aqueous electrolyte solution containing a high concentration of SO 4 2− anions. The competing side oxidative reactions such as S 2 O 8 2− and O 2 production were found to be suppressed in the presence of Ce 3+ . The Ce 4+ yield (YI (Ce 4+ )) from Ce 3+ reached up to 95%. Also, a noble-metal-free biomass-derived inexpensive electrode was found to be an efficient replacement of the Pt cathode.

AB - Herein we report the oxidation of Ce 3+ to Ce 4+ using a porous WO 3 photoanode and a Pt cathode with excellent Faradaic efficiency (FE (Ce 4+ )) of up to 98% under solar simulated light in an aqueous electrolyte solution containing a high concentration of SO 4 2− anions. The competing side oxidative reactions such as S 2 O 8 2− and O 2 production were found to be suppressed in the presence of Ce 3+ . The Ce 4+ yield (YI (Ce 4+ )) from Ce 3+ reached up to 95%. Also, a noble-metal-free biomass-derived inexpensive electrode was found to be an efficient replacement of the Pt cathode.

KW - Anion effect

KW - Biomass

KW - Ce /Ce

KW - Electrochemistry

KW - Photocatalysis

KW - Photooxidation

UR - http://www.scopus.com/inward/record.url?scp=85063896714&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063896714&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2019.03.178

DO - 10.1016/j.electacta.2019.03.178

M3 - Article

VL - 307

SP - 369

EP - 374

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -