Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film Resistors

Strontium Titanate (SrTiO3 (ST)) was prepared mechanochemically from Sr(OH)2 and TiO2. XRD confirms the Perovskite phase of material. Thick films of ST were prepared by screen-printing technique. The gas sensing performances of thick films were tested for various gases. It showed maximum sensitivity...

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Main Authors: V. B. Gaikwad, D. D. Kajale, Y. R. Baste, S. D. Shinde, P. K. Khanna, N. K. Pawar, D. N. Chavan, M. K. Deore, G. H. Jain
Format: Article
Language:English
Published: IFSA Publishing, S.L. 2009-08-01
Series:Sensors & Transducers
Subjects:
Online Access:http://www.sensorsportal.com/HTML/DIGEST/august_09/P_SI_73.pdf
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spelling doaj-968a1057d3b241eea734792df07e9cf82020-11-24T21:21:11ZengIFSA Publishing, S.L.Sensors & Transducers2306-85151726-54792009-08-016Special Issue5768Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film ResistorsV. B. Gaikwad0D. D. Kajale1Y. R. Baste2S. D. Shinde3P. K. Khanna4N. K. Pawar5D. N. Chavan6M. K. Deore7G. H. Jain8Material Research Lab., K.T.H.M. College, Nashik 422 005, IndiaDept. of chemistry, Arts, Commerce and Science College, Nandgaon 423 106, IndiaDept. of chemistry, Arts, Commerce and Science College, Nandgaon 423 106, IndiaMaterial Research Lab., K.T.H.M. College, Nashik 422 005, IndiaCentre for Materials for Electronics Technology(C-MET), Pune 411008, IndiaDept. of physics, K. A. A. N. M. S Arts, Commerce and Science College, Satana 423 105, IndiaDept. of chemistry, Arts, Commerce and Science College, Lasalgaon 422 306, IndiaDept. of Physics, Arts, Commerce and Science College, Nandgaon 423 106, IndiaDept. of Physics, Arts, Commerce and Science College, Nandgaon 423 106, IndiaStrontium Titanate (SrTiO3 (ST)) was prepared mechanochemically from Sr(OH)2 and TiO2. XRD confirms the Perovskite phase of material. Thick films of ST were prepared by screen-printing technique. The gas sensing performances of thick films were tested for various gases. It showed maximum sensitivity to CO gas at 350 oC for 100 ppm gas concentration. To improve the sensitivity and selectivity of the film towards a particular gas, ST thick films were surface modified by dipping them in a solution of nano copper for different intervals of time. These surface modified ST films showed larger sensitivity to H2S gas (100 ppm) at 300 oC than pure ST film. A systematic study, of sensing performance of the sensor, indicates the key role-played by the nano copper species on the surface .The sensitivity, selectivity, response and recovery time of the sensor were measured and presented. http://www.sensorsportal.com/HTML/DIGEST/august_09/P_SI_73.pdfStrontium titanate (SrTiO3; ST)Thick filmsCO gas sensorH2S gas sensorSensitivitySelectivity
collection DOAJ
language English
format Article
sources DOAJ
author V. B. Gaikwad
D. D. Kajale
Y. R. Baste
S. D. Shinde
P. K. Khanna
N. K. Pawar
D. N. Chavan
M. K. Deore
G. H. Jain
spellingShingle V. B. Gaikwad
D. D. Kajale
Y. R. Baste
S. D. Shinde
P. K. Khanna
N. K. Pawar
D. N. Chavan
M. K. Deore
G. H. Jain
Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film Resistors
Sensors & Transducers
Strontium titanate (SrTiO3; ST)
Thick films
CO gas sensor
H2S gas sensor
Sensitivity
Selectivity
author_facet V. B. Gaikwad
D. D. Kajale
Y. R. Baste
S. D. Shinde
P. K. Khanna
N. K. Pawar
D. N. Chavan
M. K. Deore
G. H. Jain
author_sort V. B. Gaikwad
title Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film Resistors
title_short Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film Resistors
title_full Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film Resistors
title_fullStr Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film Resistors
title_full_unstemmed Studies on Gas Sensing Performance of Pure and Surface Modified SrTiO3 Thick Film Resistors
title_sort studies on gas sensing performance of pure and surface modified srtio3 thick film resistors
publisher IFSA Publishing, S.L.
series Sensors & Transducers
issn 2306-8515
1726-5479
publishDate 2009-08-01
description Strontium Titanate (SrTiO3 (ST)) was prepared mechanochemically from Sr(OH)2 and TiO2. XRD confirms the Perovskite phase of material. Thick films of ST were prepared by screen-printing technique. The gas sensing performances of thick films were tested for various gases. It showed maximum sensitivity to CO gas at 350 oC for 100 ppm gas concentration. To improve the sensitivity and selectivity of the film towards a particular gas, ST thick films were surface modified by dipping them in a solution of nano copper for different intervals of time. These surface modified ST films showed larger sensitivity to H2S gas (100 ppm) at 300 oC than pure ST film. A systematic study, of sensing performance of the sensor, indicates the key role-played by the nano copper species on the surface .The sensitivity, selectivity, response and recovery time of the sensor were measured and presented.
topic Strontium titanate (SrTiO3; ST)
Thick films
CO gas sensor
H2S gas sensor
Sensitivity
Selectivity
url http://www.sensorsportal.com/HTML/DIGEST/august_09/P_SI_73.pdf
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