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ITO Nanoparticle Chemiresistive Sensor for Detecting Liquid Chemicals Diluted in BrineITO Nanoparticle Chemiresistive Sensor for Detecting Liquid Chemicals Diluted in Brine

Other Titles
ITO Nanoparticle Chemiresistive Sensor for Detecting Liquid Chemicals Diluted in Brine
Authors
An, S.Ko, D.Noh, J.Lee, C.Seo, D.Lee, M.Chang, J.
Issue Date
4월-2022
Publisher
Korean Institute of Electrical and Electronic Material Engineers
Keywords
Chemiresistive; ITO; Nanoparticle liquid chemical; PLA; Sensor
Citation
Transactions on Electrical and Electronic Materials, v.23, no.2, pp 107 - 112
Pages
6
Journal Title
Transactions on Electrical and Electronic Materials
Volume
23
Number
2
Start Page
107
End Page
112
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9296
DOI
10.1007/s42341-022-00383-y
ISSN
1229-7607
2092-7592
Abstract
Sensitivity and selectivity of eco-friendly (dissoluble in seawater) sensor has been investigated. ITO (Indium-Tin-Oxide) nanoparticle-based chemiresistive sensor was imprinted on PLA (Polylactic Acid) substrates. Sensor performances were investigated using representative analytes such as methanol (MeOH), ethanol (EtOH), and isopropyl alcohol (IPA) diluted in brine (NaCl 3.5 wt.%). The sensitivities of the fabricated sensors were found to be 57.8 × 10?3 ΔS/Δppm (MeOH), 24.3 × 10?3 ΔS/Δppm (EtOH), and 33.2 × 10?3 ΔS/Δppm (IPA), respectively. Also to investigate the selective detection performance, Cyclic Voltammetry is used. The electrochemical potentials (Eoredox) between the ITO and the analytes were determined to be 252.5?mV (MeOH), ? 246.5?mV (EtOH), and ? 235.8?mV (IPA), respectively. It implies that ITO nanoparticle film is able to be applied not only for the determination of analyte concentration but also for the determination of kinds of it. ? 2022, The Korean Institute of Electrical and Electronic Material Engineers.
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