Immobilization of the horseradish peroxide on the mult-wall nanotube and its application for H2O2 sensing

  • Kang Deuk Seo
  • , Seong Dae Oh
  • , Seong Ho Choi
  • , Sang Hyub Oh
  • , Jin Chun Woo
  • , Sang Ho Kim

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

In order to immobilize enzyme to multi-wall nanotube (MWNT), the MWNT was coated by the electrochemical polymerization of aniline. The horseradish peroxide (HRP) was immobilized on the surface of the polyaniline (PANI)-coated MWNT (PANI-MWNT film) by using gold nanoparticle (physical immobilization). The HRP was also immobilized on the surface of PANI-MWNT film by using 2-aminothiophenol and Au nanoparticle (self-assembling immobilization). HRP was immobilized on the surface of PANI-MWNT electrode by using glutaric dialdehyde (covalent immobilization). The sensing efficiency of HRP-MWNT electrodes for H2O2 was evaluated by amperometric method. The sensing efficiency of HRP-MWNT electrodes for H2O2 was as following order; physical immobilization > covalent immobilization > self-assembling immobilization.

Original languageEnglish
Pages (from-to)869-872
Number of pages4
JournalKey Engineering Materials
Volume342-343
DOIs
StatePublished - 2007
Externally publishedYes

Keywords

  • Horseradish peroxide
  • Immobilization Covalent immobilization
  • Physical immobilization
  • Self-assembling

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