Gas sensor with different morphology of PANI layer

0570233 - FZÚ 2024 RIV CH eng J - Journal Article
Kroutil, J. - Laposa, A. - Povolný, V. - Klimša, Ladislav - Husák, M.
Gas sensor with different morphology of PANI layer.
Sensors. Roč. 23, č. 3 (2023), č. článku 1106. E-ISSN 1424-8220
R&D Projects: GA ČR(CZ) GA22-04533S
Research Infrastructure: CzechNanoLab - 90110; CzechNanoLab II - 90251
Institutional support: RVO:68378271
Keywords : polyaniline * gas sensor * polymer film
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.9, year: 2022
Method of publishing: Open access

This work presents the design of a polymer-film-based sensor for gas detection. Different types of polyaniline are used as active layers. The advantages of resistive sensors with PANI layers are easy preparation and low production cost. At room temperature, polymer films have a high sensitivity to gas concentrations. The developed sensor works on the idea of electrical resistance shifting with gas concentration. Three different polymerization solutions are employed to synthesize the polyaniline (PANI) active layers (aqueous solution, sulfuric acid solution, and acetic acid solution). Active layers are evaluated in a controlled environment for their ability to detect ammonia, carbon monoxide, nitrogen monoxide, acetone, toluene, and relative humidity in synthetic air. PANI layers polymerized in acetic acid solutions exhibit good sensitivity toward ammonia.

Permanent Link: https://hdl.handle.net/11104/0349370