Cathodic biocatalyst consisting of laccase and gold nanoparticle for improving oxygen reduction reaction rate and enzymatic biofuel cell performance

Suhyeon Kang, Kye Sang Yoo, Yongjin Chung, Yongchai Kwon

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

New catalyst for promoting oxygen reduction reaction (ORR) and enzymatic biofuel cell (EBC) performance is suggested. The catalyst consist of laccase (LAC) and gold nanoparticle (GNP)-naphthalenethiol (NPT), which are linked to polyethyleneimine (PEI) and carbon nanotube (CNT) (CNT/PEI/[GNP-NPT]/LAC). Its onset potential and ORR rate are improved due to adoptions of PEI and GNP-NPT. Namely, CNT/PEI induces more immobilization of LACs and GNP-NPT acts as electron relay between CNP and NPT by thiol-gold bond and between CNT/PEI and LACs by electron collection effect. Even in EBC measurement, maximum power density of EBC using CNT/PEI/[GNP-NPT]/LAC is highest as 13 μW cm−2.

Original languageEnglish
Pages (from-to)329-332
Number of pages4
JournalJournal of Industrial and Engineering Chemistry
Volume62
DOIs
StatePublished - 25 Jun 2018

Keywords

  • Electron collection effect
  • Enzymatic biofuel cell
  • Gold nano particle-naphthalenethiol composite
  • Laccase
  • Oxygen reduction reaction

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