Synthesis of graphene based noble metal composites for glucose biosensor

Hee Dong Jang*, Sun Kyung Kim, Hankwon Chang, Jeong Woo Choi, Jiaxing Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Graphene (GR) based noble metal composites such as Pt-GR and Au-GR were synthesized for sensitive glucose biosensors. Aerosol spray pyrolysis (ASP) was employed to synthesize the noble metal nanoparticles-GR composites using a colloidal mixture of GO and noble metal precursor (H2PtCl 6·6H2O and AuCl4·3H 2O). The morphology of noble metal-GR composites was generally the shape of a crumpled paper ball, and the average composite size was about 1 μm. Crystalline Pt and Au nanoparticles less than 5 nm in diameter were uniformly deposited on the crumpled GR sheets, respectively. The charateristics of the as-prepared biosensors were tested through cyclic voltammetry measurements. All the biosensors based on the noble metal-crumpled GR composite exhibited a higher current flow as well as clear redox peaks, which resulted in a superior ability of the catalyst in terms of an electrochemical reaction. The amperometric response of the glucose biosensor based on the Pt-crumpled GR composite indicated the highest sensitivity as 62 μA/mM cm2.

Original languageEnglish (US)
Pages (from-to)277-280
Number of pages4
JournalMaterials Letters
Volume106
DOIs
StatePublished - Jun 17 2013

Keywords

  • Aerosol spray pyrolysis
  • Cyclic voltammetry
  • Glucose biosensor
  • Noble metal-GR composite

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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