Two types of moisture effects on the receptor function of neat tin oxide gas sensor to oxygen

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Influences of moisture on the response of a neat tin oxide gas sensor to oxygen at 623 K were investigated. Two types of moisture effects were easily recognized, that is, moisture acted as a inhibitor to the oxygen adsorption in form of O- (type I sites) and O2- (type II sites) by being adsorbed competitively (short term effect), whereas the moisture admitted at elevated temperature acted as a promoter to increase the population of type II sites or the adsorptive strength of type I sites (long term effect). A tremendous increase of the type II site population as well as the existence of threshold pressure for oxygen adsorption on the same sites suggests the formation of a sort of surface hydrate, dehydration of which seems to leave type II sites behind. The response to oxygen could be reproduced satisfactorily by using adsorption constants of oxygen and water, threshold pressure of oxygen and semiconductor properties of tin oxide.

Original languageEnglish
Pages (from-to)443-452
Number of pages10
JournalSensors and Actuators, B: Chemical
Volume176
DOIs
Publication statusPublished - Jan 1 2013

Fingerprint

Tin oxides
Chemical sensors
moisture
tin oxides
Moisture
Oxygen
sensors
oxygen
gases
Adsorption
adsorption
long term effects
thresholds
Hydrates
Dehydration
dehydration
hydrates
inhibitors
stannic oxide
Semiconductor materials

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Two types of moisture effects on the receptor function of neat tin oxide gas sensor to oxygen. / Yamazoe, Noboru; Suematsu, Koichi; Shimanoe, Kengo.

In: Sensors and Actuators, B: Chemical, Vol. 176, 01.01.2013, p. 443-452.

Research output: Contribution to journalArticle

@article{74831531c81c422ea3e8f3a0ed1de881,
title = "Two types of moisture effects on the receptor function of neat tin oxide gas sensor to oxygen",
abstract = "Influences of moisture on the response of a neat tin oxide gas sensor to oxygen at 623 K were investigated. Two types of moisture effects were easily recognized, that is, moisture acted as a inhibitor to the oxygen adsorption in form of O- (type I sites) and O2- (type II sites) by being adsorbed competitively (short term effect), whereas the moisture admitted at elevated temperature acted as a promoter to increase the population of type II sites or the adsorptive strength of type I sites (long term effect). A tremendous increase of the type II site population as well as the existence of threshold pressure for oxygen adsorption on the same sites suggests the formation of a sort of surface hydrate, dehydration of which seems to leave type II sites behind. The response to oxygen could be reproduced satisfactorily by using adsorption constants of oxygen and water, threshold pressure of oxygen and semiconductor properties of tin oxide.",
author = "Noboru Yamazoe and Koichi Suematsu and Kengo Shimanoe",
year = "2013",
month = "1",
day = "1",
doi = "10.1016/j.snb.2012.08.060",
language = "English",
volume = "176",
pages = "443--452",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",

}

TY - JOUR

T1 - Two types of moisture effects on the receptor function of neat tin oxide gas sensor to oxygen

AU - Yamazoe, Noboru

AU - Suematsu, Koichi

AU - Shimanoe, Kengo

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Influences of moisture on the response of a neat tin oxide gas sensor to oxygen at 623 K were investigated. Two types of moisture effects were easily recognized, that is, moisture acted as a inhibitor to the oxygen adsorption in form of O- (type I sites) and O2- (type II sites) by being adsorbed competitively (short term effect), whereas the moisture admitted at elevated temperature acted as a promoter to increase the population of type II sites or the adsorptive strength of type I sites (long term effect). A tremendous increase of the type II site population as well as the existence of threshold pressure for oxygen adsorption on the same sites suggests the formation of a sort of surface hydrate, dehydration of which seems to leave type II sites behind. The response to oxygen could be reproduced satisfactorily by using adsorption constants of oxygen and water, threshold pressure of oxygen and semiconductor properties of tin oxide.

AB - Influences of moisture on the response of a neat tin oxide gas sensor to oxygen at 623 K were investigated. Two types of moisture effects were easily recognized, that is, moisture acted as a inhibitor to the oxygen adsorption in form of O- (type I sites) and O2- (type II sites) by being adsorbed competitively (short term effect), whereas the moisture admitted at elevated temperature acted as a promoter to increase the population of type II sites or the adsorptive strength of type I sites (long term effect). A tremendous increase of the type II site population as well as the existence of threshold pressure for oxygen adsorption on the same sites suggests the formation of a sort of surface hydrate, dehydration of which seems to leave type II sites behind. The response to oxygen could be reproduced satisfactorily by using adsorption constants of oxygen and water, threshold pressure of oxygen and semiconductor properties of tin oxide.

UR - http://www.scopus.com/inward/record.url?scp=84875459853&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875459853&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2012.08.060

DO - 10.1016/j.snb.2012.08.060

M3 - Article

AN - SCOPUS:84875459853

VL - 176

SP - 443

EP - 452

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

ER -