Development of Cost-Effective, Selective and Stable Room Temperature Methanol Sensor
| Autor: | Tarek Sekrafi, Brahim Bouricha, Habib Nasri, Zouhour Denden, A. Labidi, Sorin Tascu, Cherif Dridi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Detection limit
Spin coating Materials science 010401 analytical chemistry Analytical chemistry chemistry.chemical_element Substrate (electronics) Zinc 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Acetone Methanol Electrical and Electronic Engineering Thin film Instrumentation |
| Zdroj: | IEEE Sensors Journal. 21:2589-2596 |
| ISSN: | 2379-9153 1530-437X |
| DOI: | 10.1109/jsen.2020.3026825 |
| Popis: | In the present work, the structural and morphological of 5, 10, 15, 20 tetratoloylphenylporphyrinato Zinc (II) (ZnTTP) thin films prepared by spin coating on low cost glass substrate have been investigated using X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). At room temperature, the electrical responses of ZnTTP thin films were measured under five reducing volatile organic compounds, including toluene, acetone, methanol, ethanol, and isopropanol. The obtained results indicate that the ZnTTP behaves as a p-type semiconductor. The developed sensor exhibits the highest linear response with methanol vapor. The selective methanol sensor based on ZnTTP thin film reveals a good reproducibility, great stability for more than 28 days, and a limit of detection as low as 2 ppm. At 260 ppm, it has fast response and recovery times of 51 s and 92 s, respectively. The principal component analysis (PCA) treatment was successfully used to discriminate methanol vapor. |
| Databáze: | OpenAIRE |
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