High-performance bioelectrocatalysts created by immobilization of an enzyme into carbon-coated composite membranes with nano-tailored structures

Tetsuji Itoh, Yuuta Shibuya, Akira Yamaguchi, Yasuto Hoshikawa, Osamu Tanaike, Tatsuo Tsunoda, Taka Aki Hanaoka, Satoshi Hamakawa, Fujio Mizukami, Akari Hayashi, Takashi Kyotani, Galen D. Stucky

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A large (40 mm φ) composite membrane with mesoporous silica nanotubes (F127MST) was coated with a thin carbon layer (1-2 graphene sheets) by carrying out chemical vapor deposition (CVD) using acetylene, and the obtained carbon-coated F127MST (C/F127MST) was used directly as an electrode. After evaluating the electrical conductivity inside the continuous mesopore network, the enzyme bilirubin oxidase (BOD) was loaded into the mesopores of C/F127MST to form BOD-C/F127MST. Indeed, this loading procedure was effective and achieved direct electron transfer between the enzymes and electrodes. The loading also was found to enhance the stability of stored BOD (it was stable for 15 days) and could be used to control the enzymatic reaction by varying the electric potential. We therefore consider BOD-C/F127MST to be a promising candidate as an effective bioelectrode in various fields.

Original languageEnglish
Pages (from-to)20244-20251
Number of pages8
JournalJournal of Materials Chemistry A
Volume5
Issue number38
DOIs
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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