Fabrication and characterization of cellulose acetate-based nanofibers and nanofilms for H2S gas sensing application.
Carbohydr Polym
; 258: 117643, 2021 Apr 15.
Article
en En
| MEDLINE
| ID: mdl-33593537
Electrospun nanofibers and solution-casting nanofilms were produced from an environmentally friendly cellulose acetate (CA) blended with glycerol (as an ionic liquid (IL)), mixed with polypyrrole (PPy, a conducting polymer) and doped with tungsten oxide (WO3) nanoparticles. The sensing membranes fabricated were used to detect H2S gas at room temperature and shown to exhibit high performance. The results revealed that the lowest operating temperature of both nanofiber and nanofilm sensors was 20 °C, with a minimum gas detection limit of 1 ppm. Moreover, the sensor exhibits a reasonably fast response, with a minimum average response time of 22.8 and 31.7 s for the proposed nanofiber and nanofilm based sensors, respectively. Furthermore, the results obtained indicated an excellent reproducibility, long-term stability, and low humidity dependence. Such distinctive properties coupled with an easy fabrication technique provide a promising potential to achieve a precise monitoring of harmful H2S gas in both indoor and outdoor atmospheres.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Carbohydr Polym
Año:
2021
Tipo del documento:
Article
País de afiliación:
Emiratos Árabes Unidos
Pais de publicación:
Reino Unido