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Title: 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 TiO 2 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:
; ; ;
Publication Date:
Research Org.:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176226
Patent Number(s):
7,694,547
Application Number:
12/040,597
Assignee:
The Ohio State University Research Foundation (Columbus, OH)
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 = {2010},
month = {4}
}

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Works referenced in this record:

Nanostructured pure and Nb-doped TiO2 as thick film gas sensors for environmental monitoring
journal, September 1999


Improvement of the oxygen gas sensitivity in doped TiO2 thick films
journal, June 1999


Preparation of Palladium and Platinum Synthetic High Polymer Catalysts and the Relationship between Particle Size and Rate of Hydrogenation
journal, October 1941

  • Rampino, Louis D.; Nord, F. F.
  • Journal of the American Chemical Society, Vol. 63, Issue 10
  • DOI: 10.1021/ja01855a070