Robust high temperature composite and CO sensor made from such composite
Abstract
Described herein is a composite exhibiting a change in electrical resistance proportional to the concentration of a reducing gas present in a gas mixture, detector and sensor devices comprising the composite, a method for making the composite and for making devices comprising the composite, and a process for detecting and measuring a reducing gas in an atmosphere. In particular, the reducing gas may be carbon monoxide and the composite may comprise rutile-phase TiO2 particles and platinum nanoclusters. The composite, upon exposure to a gas mixture containing CO in concentrations of up to 10,000 ppm, exhibits an electrical resistance proportional to the concentration of the CO present. The composite is useful for making sensitive, low drift, fast recovering detectors and sensors, and for measuring CO concentrations in a gas mixture present at levels from sub-ppm up to 10,000 ppm. The composites, and devices made from the composites, are stable and operable in a temperature range of from about 450.degree. C. to about 700.degree. C., such as may be found in a combustion chamber.
- Inventors:
- Issue Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1176226
- Patent Number(s):
- 7694547
- Application Number:
- 12/040,597
- Assignee:
- The Ohio State University Research Foundation (Columbus, OH)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
- DOE Contract Number:
- PS26-02NT41422
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2008 Feb 29
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE
Citation Formats
Dutta, Prabir K., Ramasamy, Ramamoorthy, Li, Xiaogan, and Akbar, Sheikh A. Robust high temperature composite and CO sensor made from such composite. United States: N. p., 2010.
Web.
Dutta, Prabir K., Ramasamy, Ramamoorthy, Li, Xiaogan, & Akbar, Sheikh A. Robust high temperature composite and CO sensor made from such composite. United States.
Dutta, Prabir K., Ramasamy, Ramamoorthy, Li, Xiaogan, and Akbar, Sheikh A. Tue .
"Robust high temperature composite and CO sensor made from such composite". United States. https://www.osti.gov/servlets/purl/1176226.
@article{osti_1176226,
title = {Robust high temperature composite and CO sensor made from such composite},
author = {Dutta, Prabir K. and Ramasamy, Ramamoorthy and Li, Xiaogan and Akbar, Sheikh A.},
abstractNote = {Described herein is a composite exhibiting a change in electrical resistance proportional to the concentration of a reducing gas present in a gas mixture, detector and sensor devices comprising the composite, a method for making the composite and for making devices comprising the composite, and a process for detecting and measuring a reducing gas in an atmosphere. In particular, the reducing gas may be carbon monoxide and the composite may comprise rutile-phase TiO2 particles and platinum nanoclusters. The composite, upon exposure to a gas mixture containing CO in concentrations of up to 10,000 ppm, exhibits an electrical resistance proportional to the concentration of the CO present. The composite is useful for making sensitive, low drift, fast recovering detectors and sensors, and for measuring CO concentrations in a gas mixture present at levels from sub-ppm up to 10,000 ppm. The composites, and devices made from the composites, are stable and operable in a temperature range of from about 450.degree. C. to about 700.degree. C., such as may be found in a combustion chamber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 13 00:00:00 EDT 2010},
month = {Tue Apr 13 00:00:00 EDT 2010}
}
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