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A Glucose Biosensor Prepared With Graphene Based Composites | 6489
ISSN: 2155-6210

Journal of Biosensors & Bioelectronics
Open Access

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A glucose biosensor prepared with graphene based composites

2nd International Conference and Exhibition on Biosensors & Bioelectronics

Hee Dong Jang, Sun Kyung Kim, Kee Min Roh, Hankwon Chang, Jeong-Woo Choi and Jiaxing Huang

Accepted Abstracts: J Biosens Bioelectron

DOI: 10.4172/2155-6210.S1.022

Abstract
We synthesized graphene (GR) based composite such as TiO2/GR and Pd/GR for glucose biosensor. The GR based composite was fabricated from a colloidal mixture of TiO2 nanoparticles or aqueous solution of paladium chloride (PdCl2) and graphene oxide (GO) sheets via an aerosol spray pyrolysis (ASP) that is a very fast and continuous process to fabricate the composites as one-step process without reduction reagents. The effect of the precursors content in the colloidal mixture on the composite property, including the morphology, crystal structure and specific surface area was investigated. The particle morphology of all TiO2-GR composites was spherical in shape and micron-sized TiO2 particles were encapsulated by GR nanosheets. The morphology of Pd/GR was the shape of a crumpled sheet of paper and the average size of the composite was around 1.3 μm in diameter. The amperometric responses of the glucose biosensors based on the composites were linear against a concentration of glucose ranging from 0 to 8 mM at -0.6 V. The fabricated glucose biosensor based on the Pd-GR composite showed high catalytic performance for glucose redox than the TiO2-GR biosensor.
Biography
Hee Dong Jang is currently a distinguished researcher and a director of Rare Metals Research Center of Korea Institute of Geoscience and Mineral Resources. He received Ph.D. (1993) from Sogang University in Korea, and Ph.D. (2005) from Hiroshima University in Japan. He earned his postdoc at the University of California at Los Angeles (1996-1997) and visiting scholar at the Northwestern University (2009-2010) in US. He is currently a vice president of Korea Association for Aerosol and Particle Research (2010-present), and an Executive editor of Advanced Powder Technology (2009-present).
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