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Polypyrrole-NiO hybrid nanocomposite films: highly selective, sensitive, and reproducible NO2 sensors
- Issue Date
- Nov-2014
- Publisher
- Institute for Ionics
- Keywords
- PPy-NiO hybrid nanocomposite; XRD; FESEM; TEM; FTIR; Gas sensors
- Citation
- Ionics, v.20, no.11, pp.1607 - 1616
- Indexed
- SCIE
SCOPUS
- Journal Title
- Ionics
- Volume
- 20
- Number
- 11
- Start Page
- 1607
- End Page
- 1616
- ISSN
- 0947-7047
- Abstract
- Polypyrrole-nickel oxide (PPy-NiO) hybrid nanocomposite thin-film sensor was prepared by spin-coating method on glass substrate. The PPy-NiO hybrid nanocomposite thin film sensors were used to study room temperature gas-sensing properties for oxidizing (NO2, Cl-2) as well as reducing (NO2, H2S, C2H5OH, NH3, and Cl-2) gases. It was revealed that PPy-NiO (50 %) hybrid nanocomposite thin-film sensor could detect NO2 at low concentration (100 ppm) with very high selectivity (47 % compared with Cl-2) and high sensitivity (47 %), with better stability (90 %) and reproducibility. The response and recovery times were changed significantly with NO2 concentration.
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Related Researcher
- Lee, Sunyong Caroline
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)