W-Sn Mixed Oxides and ZnO to Detect NOx and Ozone in Atmosphere

Autor: Ambra Fioravanti, Sara Morandi, Alessia Amodio, Mauro Mazzocchi, Michele Sacerdoti, Maria Cristina Carotta
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Proceedings, Vol 2, Iss 13, p 836 (2018)
Druh dokumentu: article
ISSN: 2504-3900
DOI: 10.3390/proceedings2130836
Popis: Thick films of zinc oxide (ZnO) in form of nanospheres or hexagonal prisms and of tungsten-tin (W-Sn) mixed oxides at nominal Sn molar fraction (0.1, 0.3 and 0.5) were prepared. The functional materials were synthesized and characterized by SEM and TEM, X-ray diffraction, specific surface area measurements, UV-Vis-NIR and IR spectroscopies. The gas sensing measurements highlighted that ZnO is more performant in form of nanoprisms, while W-Sn sensors offer a better response towards NOx and ozone with respect to pure WO3.
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