Superior anodic oxidation in tailored Sb-doped SnO 2 /RuO 2 composite nanofibers for electrochemical water treatment

Jae Chan Kim, Seung Ik Oh, Woohyeon Kang, Ha Young Yoo, Jaesang Lee, Dong-Wan Kim

Research output: Contribution to journalArticle

Abstract

Dimensionally stable RuO 2 (RO)- and IrO 2 -based anodes have been widely used for electrochemical water treatment but alternative materials are required due to their well-recognized drawbacks such as high-cost and low oxygen evolution potential. In an effort to minimize noble metal contents, we herein fabricated electrospun Sb-doped SnO 2 (ATO)/RO composite nanofibers as new anode materials by controlling precursor ratios. These composite nanofiber anodes have one-dimensional nanostructure assembled with highly uniform ATO and RO nanoparticles and their oxygen evolution potential was successfully tailored by compositional change. The ATO/RO nanofiber anodes, even with a small amount of RO of 3% exhibited superior electrocatalytic performance in oxidative organic degradation; complete degradation of bisphenol A as a model substrate was achieved during 20 min-electrolysis on ATO/RO anodes at a low current density of 3 mA⋅cm −2 . This strategy provides the optimization of oxygen evolution reaction and current efficiency, resulting in excellent capability for electrochemical water treatment.

Original languageEnglish
Pages (from-to)118-126
Number of pages9
JournalJournal of Catalysis
Volume374
DOIs
Publication statusPublished - 2019 Jun 1

Fingerprint

water treatment
Anodic oxidation
Nanofibers
Water treatment
Anodes
anodes
oxidation
composite materials
Composite materials
Oxygen
oxygen
degradation
Degradation
bisphenols
electrolysis
low currents
Precious metals
noble metals
Electrolysis
Nanostructures

Keywords

  • Electrochemical water treatment
  • Electrospinning
  • Oxygen evolution reaction
  • RuO
  • Sb-doped SnO

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Superior anodic oxidation in tailored Sb-doped SnO 2 /RuO 2 composite nanofibers for electrochemical water treatment . / Kim, Jae Chan; Oh, Seung Ik; Kang, Woohyeon; Yoo, Ha Young; Lee, Jaesang; Kim, Dong-Wan.

In: Journal of Catalysis, Vol. 374, 01.06.2019, p. 118-126.

Research output: Contribution to journalArticle

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AU - Lee, Jaesang

AU - Kim, Dong-Wan

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