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Cho, Yoon-Kyoung
Integrated Nano-Biotech Lab (INBL)
Research Interests
  • Microfluidics, Lab-on-a-chip, personalized biomedical diagnostics, nanobioengineering

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Highly sensitive detection of hydrazine by a disposable, Poly(Tannic Acid)-Coated carbon electrode

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Title
Highly sensitive detection of hydrazine by a disposable, Poly(Tannic Acid)-Coated carbon electrode
Author
Haque, Al-Monsur JiaulKumar, SumitRio, Jonathan Sabate delCho, Yoon-Kyoung
Issue Date
2020-02
Publisher
Pergamon Press Ltd.
Citation
BIOSENSORS & BIOELECTRONICS, v.150, pp.111927
Abstract
We propose an electrochemical sensor based on the enhanced electrocatalytic oxidation exhibited on a functionalized poly(tannic acid) coating to detect hydrazine. Tannic acid, a naturally abundant and low-cost polyphenol, was enzymatically polymerized with horseradish peroxidase and subsequently adsorbed on a disposable screen-printed carbon electrode with a short incubation time (30 min). The fabrication method proved to be reproducible (4.2 % relative standard deviation), with the sensors displaying high sensitivity (7 × 10-3 μA mm-2 μM-1) and selectivity even in the presence of various common interfering agents. The low detection limit (100 nM) and robustness of the sensor demonstrated its suitability for environmental applications. It can be used to quantify hydrazine in tap and river water samples.
URI
https://scholarworks.unist.ac.kr/handle/201301/30604
URL
https://www.sciencedirect.com/science/article/pii/S0956566319310061
DOI
10.1016/j.bios.2019.111927
ISSN
0956-5663
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BME_Journal Papers
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