Amperometric Glucose Biosensor Based on a Pt-Dispersed Hierarchically Porous Electrode
- Authors
- Song, Min-Jung; Hwang, Sung Woo; Whang, Dongmok
- Issue Date
- 4월-2009
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Glucose sensor; Electrochemical biosensor; Hierarchical porous surface
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.54, no.4, pp.1612 - 1618
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 54
- Number
- 4
- Start Page
- 1612
- End Page
- 1618
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/120321
- DOI
- 10.3938/jkps.54.1612
- ISSN
- 0374-4884
- Abstract
- A high-performance electrochemical biosensor for the detection of glucose was developed using a Pt-dispersed polyaniline (PANI) nanorod electrode with a hierarchical porous surface. PANI nanorods were synthesized directly on an Au-coated porous silicon electrode and high-density Pt nanoparticles were dispersed on the PANI nanorods by electrochemical deposition. The electrode surface's structure exhibited order on multiple length scales from similar to 30-nm Pt nanoparticle to similar to 200-nm diameter PANI nanorod to micrometer pore size's for the porous silicon. The sensitivity of the Pt-dispersed PANI nanorod electrode with a hierarchical porous surface was 35.64 mu A/mM, which corresponds to a 22.1-fold larger value than that of the planar Au/PANI nanorod electrode. The glucose biosensor with a Pt-dispersed highly porous electrode exhibited a short response time (<10 s) and a linear response in the range from 9 x 10(-6) to 5 x 10(-3) M. The sensor also showed long-term stability; the sensing response measured under the same conditions retained 80 % of the initial value after a 45-day storage. The high performances of the novel glucose sensor are mainly attributed to the hierarchical porous electrode structure, which provides an increased sensing area and effective mass transportation pathway.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
- College of Engineering > School of Electrical Engineering > 1. Journal Articles
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