Microwave Gas Sensors Based on Electrodeposited Polypyrrole–Nickel Phthalocyanine Hybrid Films - Université de Bourgogne Accéder directement au contenu
Article Dans Une Revue Sensors Année : 2023

Microwave Gas Sensors Based on Electrodeposited Polypyrrole–Nickel Phthalocyanine Hybrid Films

Résumé

Previous studies have shown that the incorporation of sulfonated metallophthalocyanines into sensitive sensor materials can improve electron transfer and thus species detection. Herein, we propose a simple and easy alternative to the use of generally expensive sulfonated phthalocyanines by electropolymerizing polypyrrole together with nickel phthalocyanine in the presence of an anionic surfactant. The addition of the surfactant not only helps the incorporation of the water-insoluble pigment into the polypyrrole film, but the obtained structure has increased hydrophobicity, which is a key property for developing efficient gas sensors with low sensitivity to water. The obtained results show the effectiveness of the materials tested for the detection of ammonia in the range of 100 to 400 ppm. It is shown by comparing the microwave sensor responses that the film without nickel phthalocyanine (hydrophilic) produces greater variations than the film with nickel phthalocyanine (hydrophobic). These results are consistent with the expected results since the hydrophobic film is not very sensitive to residual ambient water and therefore does not interfere with the microwave response. However, although this excess response is usually a handicap, as it is a source of drift, in these experiments the microwave response shows great stability in both cases.

Domaines

Chimie
Fichier principal
Vignette du fichier
sensors-23-05550-v4.pdf (12.48 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04142248 , version 1 (29-06-2023)

Licence

Paternité

Identifiants

Citer

Ileana-Alexandra Pavel, Alexis Lasserre, Léo Simon, Jérôme Rossignol, Sophie Lakard, et al.. Microwave Gas Sensors Based on Electrodeposited Polypyrrole–Nickel Phthalocyanine Hybrid Films. Sensors, 2023, 23 (12), pp.5550. ⟨10.3390/s23125550⟩. ⟨hal-04142248⟩
23 Consultations
10 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More