Highly conductive titanium oxide nanotubes chemical sensors
Anno: 2015
Autori: Comini E., Galstyan V., Faglia G., Bontempi E., Sberveglieri G.
Affiliazione autori: SENSOR Lab, Department of Information Engineering, University of Brescia and CNR-INO, Via Valotti 9, 25133 Brescia, Italy; INSTM and Chemistry for Technologies Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia,Via Branze 28, 25133 Brescia, Italy
Abstract: Nb-TiO2 nanotubes arrays have been prepared by anodisation of Nb-Ti metallic films. After the annealing treatment the nanotubes are crystallized in the anatase phase. Conductance increased of several orders of magnitude thanks to the introduction of Nb. We have prepared conductometric sensors and evaluated their sensing properties towards different gases. Functional measurements demonstrated very good sensing performances towards ethanol, acetone and carbon monoxide. The gas sensing performances has been tested as a function of the dimensions of the nanotubes showing an improvement in chemical sensing as the internal diameter of the tubes get smaller. (C) 2015 Elsevier Inc. All rights reserved.
Giornale/Rivista: MICROPOROUS AND MESOPOROUS MATERIALS
Volume: 208 Da Pagina: 165 A: 170
Maggiori informazioni: The work has been supported by the Italian MIUR through the FIRB Project RBAP115AYN \”Oxides at the nanoscale: multi-functionality and applications\” and the FIRB \”Rete Nazionale di Ricerca sulle Nanoscienze ItalNanoNet\” (Protocollo: RBPR05JH2P, 2009-2013). Authors are thankful to Mr. Nicola Poli for his technical support during the experiments.Parole chiavi: Metal oxide; Titania; Nanotubes; Chemical sensing; DOI: 10.1016/j.micromeso.2015.01.040Citazioni: 27dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-03-24Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui