Preparation of a colored conductive paint electrode for electrochemical inactivation of bacteria

Tae Kyu Lim, Tadataka Murakami, Makoto Tsuboi, Kazuharu Yamashita, Tadashi Matsunaga

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In this study we describe the preparation of a colored conductive paint electrode containing In2O3, SnO2, or TiO2 for the electrochemical inactivation of marine bacteria. When each colored conductive paint electrode was immersed in seawater containing 106 cells/mL for 90 min, marine microbe attachment to the TiO2/SnO2/Sb electrode surface was minimal. Preparation of electrodes coated with 40% particles is shown to be more cost-effective, and because of their more translucent coatings they can be painted over with bright colors. When a potential of 1.0 V was applied for 30 min to the colored conductive paint electrode (40 wt% TiO2/SnO2/Sb) in sterile seawater, the survival ratio decreased to 55%. When 1.5 V vs. saturated calomel electrode (SCE) was applied, all attached cells were inactivated. Chlorine was not detected below an applied potential of 1.5 V. A change in pH was not observed in the range of 0 to 1.5 V. This method might be effective for preventing bacterial cell accumulation and the formation of biofilms.

Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalBiotechnology and Bioengineering
Volume81
Issue number3
DOIs
Publication statusPublished - 2003 Feb 5
Externally publishedYes

Fingerprint

Paint
Bacteria
Electrodes
Seawater
Chlorine
Biofilms
Color
Costs and Cost Analysis
Coatings
Costs

Keywords

  • Bacteria
  • Colored conductive paint electrode
  • Electrochemical inactivation
  • Metal particles

ASJC Scopus subject areas

  • Biotechnology
  • Microbiology

Cite this

Preparation of a colored conductive paint electrode for electrochemical inactivation of bacteria. / Lim, Tae Kyu; Murakami, Tadataka; Tsuboi, Makoto; Yamashita, Kazuharu; Matsunaga, Tadashi.

In: Biotechnology and Bioengineering, Vol. 81, No. 3, 05.02.2003, p. 299-304.

Research output: Contribution to journalArticle

Lim, Tae Kyu ; Murakami, Tadataka ; Tsuboi, Makoto ; Yamashita, Kazuharu ; Matsunaga, Tadashi. / Preparation of a colored conductive paint electrode for electrochemical inactivation of bacteria. In: Biotechnology and Bioengineering. 2003 ; Vol. 81, No. 3. pp. 299-304.
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