Electrochemical Study on Decomposition of Hydrogen Peroxide with Fe(II)

Jing Yi Kao, Chong Mou Wang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Decomposition of H2O2 with Fe2+ was studied with SnO2 electrodes. By chronoamperometric and voltammetric techniques, the diffusion coefficients of Fe3* and H 2O2 were estimated to be 5 × 10‐6 and 2 × 10−5 cm2/s, respectively; the rate of decomposition of H2O2 with Fe2+ was proportional to [H2O2]1/2·[Fe2+]2 at a smaller concentration of Fe2+, but to [H2O2]1/2·[Fe2+] when [Fe2+] was increased, indicating the formation of ferryl ion and the electron exchange between it and Fe2+ playing important roles. This catalytic decomposition. was dependent on pH; the maximum rate was observed to occur about pH = 1.5.

Original languageEnglish
Pages (from-to)533-538
Number of pages6
JournalJournal of the Chinese Chemical Society
Volume41
Issue number5
DOIs
Publication statusPublished - 1994 Jan 1

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Hydrogen Peroxide
Decomposition
Electrodes
Electrons
ferryl iron

Keywords

  • Catalytic disproportionation
  • Electrochemistry
  • Ferryl ion
  • Hydrogen peroxide

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Electrochemical Study on Decomposition of Hydrogen Peroxide with Fe(II). / Kao, Jing Yi; Wang, Chong Mou.

In: Journal of the Chinese Chemical Society, Vol. 41, No. 5, 01.01.1994, p. 533-538.

Research output: Contribution to journalArticle

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AB - Decomposition of H2O2 with Fe2+ was studied with SnO2 electrodes. By chronoamperometric and voltammetric techniques, the diffusion coefficients of Fe3* and H 2O2 were estimated to be 5 × 10‐6 and 2 × 10−5 cm2/s, respectively; the rate of decomposition of H2O2 with Fe2+ was proportional to [H2O2]1/2·[Fe2+]2 at a smaller concentration of Fe2+, but to [H2O2]1/2·[Fe2+] when [Fe2+] was increased, indicating the formation of ferryl ion and the electron exchange between it and Fe2+ playing important roles. This catalytic decomposition. was dependent on pH; the maximum rate was observed to occur about pH = 1.5.

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