GB2296978A - Tin oxide based gas sensors and method for their manufacture - Google Patents

Tin oxide based gas sensors and method for their manufacture

Info

Publication number
GB2296978A
GB2296978A GB9605970A GB9605970A GB2296978A GB 2296978 A GB2296978 A GB 2296978A GB 9605970 A GB9605970 A GB 9605970A GB 9605970 A GB9605970 A GB 9605970A GB 2296978 A GB2296978 A GB 2296978A
Authority
GB
United Kingdom
Prior art keywords
gas sensors
gas
tin
manufacture
polymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9605970A
Other versions
GB2296978B (en
GB9605970D0 (en
Inventor
Alan Wilson
John Dalton Wright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of GB9605970D0 publication Critical patent/GB9605970D0/en
Publication of GB2296978A publication Critical patent/GB2296978A/en
Application granted granted Critical
Publication of GB2296978B publication Critical patent/GB2296978B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

A method for fabricating gas sensors having reproducible gas sensitivity characteristics and the gas sensors so produced. The method comprises the steps: a) hydrolysis of sterically hindered tin(IV) alkoxide dissolved in a polar organic solvent in the presence of a polymer of relatively low molecular weight having a functional group capable of of coordinating to tin; b) treatment of the resulting solution with a strong mineral acid to remove the polymer; c) isolation of the solid suspension; d) deposition and subsequent heat treatment at temperatures below 500 DEG C of an amount of the solid on a suitable substrate to produce a gas sensor head and e) sensitization of the gas sensor head.
GB9605970A 1993-09-23 1994-08-22 Tin oxide based gas sensors and method for their manufacture Expired - Fee Related GB2296978B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939319456A GB9319456D0 (en) 1993-09-23 1993-09-23 Improvements in tin oxide based gas sensors
PCT/GB1994/001832 WO1995008764A1 (en) 1993-09-23 1994-08-22 Tin oxide based gas sensors and method for their manufacture

Publications (3)

Publication Number Publication Date
GB9605970D0 GB9605970D0 (en) 1996-05-22
GB2296978A true GB2296978A (en) 1996-07-17
GB2296978B GB2296978B (en) 1997-12-24

Family

ID=10742281

Family Applications (2)

Application Number Title Priority Date Filing Date
GB939319456A Pending GB9319456D0 (en) 1993-09-23 1993-09-23 Improvements in tin oxide based gas sensors
GB9605970A Expired - Fee Related GB2296978B (en) 1993-09-23 1994-08-22 Tin oxide based gas sensors and method for their manufacture

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB939319456A Pending GB9319456D0 (en) 1993-09-23 1993-09-23 Improvements in tin oxide based gas sensors

Country Status (6)

Country Link
EP (1) EP0720738A1 (en)
JP (1) JPH09503860A (en)
CN (1) CN1134190A (en)
CA (1) CA2172515A1 (en)
GB (2) GB9319456D0 (en)
WO (1) WO1995008764A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010032343A (en) * 2008-07-29 2010-02-12 Figaro Eng Inc MANUFACTURING METHOD OF SnO2 GAS SENSOR, AND MANUFACTURING METHOD OF SnO2 CARRYING HAVING NOBLE METAL NANOPARTICLES

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1282993A (en) * 1970-05-22 1972-07-26 Naoyoshi Taguchi Gas detecting devices
DE3313752A1 (en) * 1982-04-17 1983-10-20 Figaro Engineering Inc., Minoo, Osaka EXHAUST GAS SENSOR AND METHOD FOR PRODUCING SUCH A

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1282993A (en) * 1970-05-22 1972-07-26 Naoyoshi Taguchi Gas detecting devices
DE3313752A1 (en) * 1982-04-17 1983-10-20 Figaro Engineering Inc., Minoo, Osaka EXHAUST GAS SENSOR AND METHOD FOR PRODUCING SUCH A

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
EUROSENSORS VII CONF. AND EXHIB.BUDAPEST,HUNGARY,26-29 SEPT 1993,SENSORS & ACT.B(CHEM). PGS 506-510 *
FOURTH INT.MEETING ON CHEM.SENSORS, TOKYO,JAPAN 13-17SEPT.92SENSORS & ACT. B(CHEM)JUNE93 PGS 675-676 *
PROCEEDINGS OF THE SYMPOSIUM ON CHEMICAL SENSORS, HONOLULU HI,USA,18-23 OCT 1987 PGS 55-64 *
SENSORS & ACT. B (CHEM) MAY 1990 SWIT. VOL B2,NR.2,PAGES 151-161 ISSN 0925-4005 *
SIXTH INT. CONF. ON SOLID FILMS AND SURFACES, ICSFS-6, PARIS29.6-3.7.92. APP.SUR.SCIENCE PGS 212-219 *

Also Published As

Publication number Publication date
CA2172515A1 (en) 1995-03-30
WO1995008764A1 (en) 1995-03-30
CN1134190A (en) 1996-10-23
JPH09503860A (en) 1997-04-15
GB9319456D0 (en) 1993-11-03
EP0720738A1 (en) 1996-07-10
GB2296978B (en) 1997-12-24
GB9605970D0 (en) 1996-05-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990822