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Titolo:
Screen-printed perovskite-type thick films as gas sensors for environmental monitoring
Autore:
Martinelli, G; Carotta, MC; Ferroni, M; Sadaoka, Y; Traversa, E;
Indirizzi:
Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, I-00133 Rome, ItalyUniv Roma Tor Vergata Rome Italy I-00133 ecnol Chim, I-00133 Rome, Italy Univ Ferrara, Dipartmento Fis, CNR, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100 ento Fis, CNR, I-44100 Ferrara, Italy Ehime Univ, Fac Engn, Dept Mat Sci & Engn, Matsuyama, Ehime 79077, Japan Ehime Univ Matsuyama Ehime Japan 79077 ngn, Matsuyama, Ehime 79077, Japan
Titolo Testata:
SENSORS AND ACTUATORS B-CHEMICAL
fascicolo: 2-3, volume: 55, anno: 1999,
pagine: 99 - 110
SICI:
0925-4005(19990511)55:2-3<99:SPTFAG>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
NANOSIZED LAFEO3 POWDERS; THERMAL-DECOMPOSITION; HETERONUCLEAR COMPLEXES; SOLID-ELECTROLYTE; ELECTROCERAMIC APPLICATIONS; OXYGEN SENSORS; OXIDES; NO2; SENSITIVITY; EVOLUTION;
Keywords:
screen-printed; perovskite-type thick films; environmental monitoring;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Traversa, E Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, Via RicSci, I-00133 Univ Roma Tor Vergata Via Ric Sci Rome Italy I-00133 I-00133
Citazione:
G. Martinelli et al., "Screen-printed perovskite-type thick films as gas sensors for environmental monitoring", SENS ACTU-B, 55(2-3), 1999, pp. 99-110

Abstract

Thick films of LaFeO3 and SmFeO3 were fabricated by screen-printing technology on alumina substrates with comb-type Au electrodes. The perovskite-type oxide powders used for the preparation of the thick films have been prepared by the thermal decomposition at 700 degrees C of hexacyanocomplexes, Ln[Fe(CN)(6)] . nH(2)O. These powders are ultrafine, homogeneous, and free ofintragranular pores. The films have been fired at different temperatures in the 750-1000 degrees C range, in N-2 and air atmospheres. The gas-sensitive electrical response of the thick films have been tested in laboratory, in environments with different gases (CO and NO2) in dry and wet air. For field tests, the prototype sensors have been placed beside a conventional station for environmental monitoring. The electrical response of the thick films has been compared with the results of the analytical instruments for environmental monitoring. The same trend was observed for both systems, with very promising results. (C) 1999 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/05/20 alle ore 15:08:56