Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Preparation of Graphene-Palladium Composite by Aerosol Process and It's Characterization for Glucose Biosensor

에어로졸 공정에 의한 그래핀-팔라듐 복합체 제조 및 글루코스 바이오센서 특성평가

  • Kim, Sun Kyung (Rare Metals Utilization Research Team, Korea Institute of Geoscience and Mineral Resources) ;
  • Jang, Hee Dong (Rare Metals Utilization Research Team, Korea Institute of Geoscience and Mineral Resources) ;
  • Chang, Hankwon (Rare Metals Utilization Research Team, Korea Institute of Geoscience and Mineral Resources) ;
  • Choi, Jeong-Woo (Interdisciplinary Program of Integrated Biotechnology, Sogang University)
  • 김선경 (한국지질자원연구원 희유자원활용연구실) ;
  • 장희동 (한국지질자원연구원 희유자원활용연구실) ;
  • 장한권 (한국지질자원연구원 희유자원활용연구실) ;
  • 최정우 (서강대학교 산업바이오전공)
  • Received : 2014.05.30
  • Accepted : 2014.06.25
  • Published : 2014.06.30
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Abstract

Palladium (Pd) nanoparticles attached graphene (GR) composite was synthesized for an enhanced glucose biosensor. Aerosol spray pyrolysis (ASP) was employed to synthesize the GR-Pd composite using a colloidal mixture of graphene oxide (GO) and palladium chloride ($PdCl_2$) precursor. The effects of the weight ratio of the Pd/GR on the particle properties including the morphology and crystal structure were investigated. The morphology of GR-Pd composites was generally the shape of a crumpled paper ball, and the average composite size was about $1{\mu}m$. Pd nanoparticles less than 20 nm in diameter were deposited on GR sheets and the Pd nanoparticles showed clear crystallinity. The characteristic of the glucose biosensor fabricated with the as-prepared GR-Pd composite was tested through cyclic voltammetry measurements. The biosensor exhibited a high current flow as well as clear redox peaks, which resulted in a superior ability of the catalyst in terms of an electrochemical reaction. The highest sensitivity obtained from the amperometric response of the glucose biosensor was $14.4{\mu}A/mM{\cdot}cm^2$.

Keywords

References

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