Potentiometric biosensor for urea based on electropolymerized electroinactive polypyrrole

Shinichi Komaba, Michiko Seyama, Toshiyuki Momma, Tetsuya Osaka

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

A urea biosensor was developed by immobilizing urease into an electropolymerized electroinactive polypyrrole (PPy) on a platinum electrode. This enzyme-immobilized PPy electrode showed a stable potential response to urea based on the pH response of the electroinactive PPy film electrode. The electropolymerization conditions were optimized, and thus the biosensor showed a Nernstian response with a slope of 31.8mV decade-1 over concentration range of 1 × 10-4-0.3 mol dm-3 urea.

Original languageEnglish
Pages (from-to)383-388
Number of pages6
JournalElectrochimica Acta
Volume42
Issue number3
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

Polypyrroles
Biosensors
Urea
Electrodes
Immobilized Enzymes
Electropolymerization
Urease
Platinum
Enzymes
polypyrrole

Keywords

  • Biosensor
  • Electropolymerization
  • Polypyrrole
  • Urea

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

Potentiometric biosensor for urea based on electropolymerized electroinactive polypyrrole. / Komaba, Shinichi; Seyama, Michiko; Momma, Toshiyuki; Osaka, Tetsuya.

In: Electrochimica Acta, Vol. 42, No. 3, 1997, p. 383-388.

Research output: Contribution to journalArticle

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