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

Proceedings

Sacerdoti, Michele¹  Fioravanti, Ambra²  Amodio, Alessia³  Morandi, Sara⁴  Mazzocchi, Mauro⁵  Carotta, Maria Cristina⁶ 

[1] Author to whom correspondence should be addressed.;C.N.R.—IMAMOTER, Via Canal Bianco 28, 44124 Ferrara, Italy;C.N.R.—ISTEC, Via Granarolo 64, 48018 Ravenna, Italy;Dipartimento di Chimica, Università di Torino, Via P. Giuria 7, 10125 Torino, Italy;Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Via Saragat 1, 44122 Ferrara, Italy;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.

关键词: W-Sn mixed oxides;    ZnO nanomorphologies;    NOx;    ozone detection;    thick film gas sensors;    UV-Vis-NIR;    FT-IR spectroscopies;   

DOI  :  10.3390/proceedings2130836

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY