Preparation and characterisation of NH3 gas sensor based on PANI/Fe-doped CeO2 nanocomposite

Esmaeilia, Chakavak and Ashtianib, Saeed and Regmib, Chhabilal and Laposaa, Alexandr and Vovesa, Jan and Kroutila, Jiří and Friessb, Karel and Povolnya, Vojtech and Lotfian, Saeid (2024) Preparation and characterisation of NH3 gas sensor based on PANI/Fe-doped CeO2 nanocomposite. Heliyon, 10 (15). e34801. ISSN 2405-8440 (https://doi.org/10.1016/j.heliyon.2024.e34801)

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Abstract

PANI/Fe-doped CeO 2 nanocomposite was synthesised by the in-situ process. The produced powders were characterised by XRD, XPS, FT-IR, Raman, HRTEM and SEM-EDS tests. The sensors' function was based on PANI/Fe-doped CeO 2 nanocomposite with thin film deposited on top of interdigitated electrodes (IDT). NH 3 detection with PANI/Fe-doped CeO 2 nanocomposite sensor could be successfully performed even at room temperature (RT) and relative humidity of 45 %. Results demonstrated that PANI/Fe-doped CeO 2 might be promising sensing materials for detecting the low NH 3 concentration (ppm). In addition, the sensor is selective to the interfering gases, including CO, CO 2 and NO 2. This sensor displays acceptable repeatability and stability over time.

ORCID iDs

Esmaeilia, Chakavak, Ashtianib, Saeed, Regmib, Chhabilal, Laposaa, Alexandr, Vovesa, Jan, Kroutila, Jiří, Friessb, Karel, Povolnya, Vojtech and Lotfian, Saeid ORCID logoORCID: https://orcid.org/0000-0001-8542-933X;
CORE (COnnecting REpositories)