Development of electrolyte-free ozone sensors using boron-doped diamond electrodes

Yuya Ishii, Tribidasari A. Ivandini, Kazutaka Murata, Yasuaki Einaga

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The electrochemical detection of dissolved ozone in water was examined using boron-doped diamond (BDD) electrodes. A well-defined reduction peak was observed at ∼380 mV for H-terminated BDD, whereas it was observed at ∼200 mV in the case of O-terminated BDD for an ozone solution in a 0.1 M phosphate buffer solution at pH 7. The peak potential for ozone reduction was selective with respect to oxygen reduction at both H- and O-terminated BDD electrodes, whereas it occurred at approximately the same potential as oxygen reduction at other types of solid electrodes, including glassy-carbon, platinum, and gold electrodes. Interference from chlorine was not observed in lower concentration than 300 μM ClO-. Furthermore, in order to apply the detection technique to electrolyte-free media, BDD microelectrodes were also used. A linear calibration curve for dissolved ozone in water could be achieved between concentrations of 0.49 and 740 μM, with an estimated detection limit (S/N = 3) of 0.185 μM (S/N = 3). Excellent stability was demonstrated for repetitions of these calibration curves performed in 3 consecutive days.

Original languageEnglish
Pages (from-to)4284-4288
Number of pages5
JournalAnalytical Chemistry
Volume85
Issue number9
DOIs
Publication statusPublished - 2013 May 7

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Diamond
Boron
Ozone
Electrolytes
Electrodes
Sensors
Calibration
Oxygen
Water
Microelectrodes
Chlorine
Glassy carbon
Platinum
Gold
Buffers
Phosphates

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Development of electrolyte-free ozone sensors using boron-doped diamond electrodes. / Ishii, Yuya; Ivandini, Tribidasari A.; Murata, Kazutaka; Einaga, Yasuaki.

In: Analytical Chemistry, Vol. 85, No. 9, 07.05.2013, p. 4284-4288.

Research output: Contribution to journalArticle

Ishii, Yuya ; Ivandini, Tribidasari A. ; Murata, Kazutaka ; Einaga, Yasuaki. / Development of electrolyte-free ozone sensors using boron-doped diamond electrodes. In: Analytical Chemistry. 2013 ; Vol. 85, No. 9. pp. 4284-4288.
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