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Title: Palladium and platinum-based nanoparticle functional sensor layers and integration with engineered filter layers for selective H2 sensing

Abstract

The disclosure relates to a method for H2 sensing in a gas stream utilizing a hydrogen sensing material. The hydrogen sensing material is comprised of Pd-based or Pt-based nanoparticles having an average nanoparticle diameter of less than about 100 nanometers dispersed in an inert matrix having a bandgap greater than or equal to 5 eV, and an oxygen ion conductivity less than approximately 10−7 S/cm at a temperature of 700° C. Exemplary inert matrix materials include SiO2, Al2O3, and Si3N4 as well as modifications to modify the effective refractive indices through combinations and/or doping of such materials. Additional exemplary matrix materials consist of zeolitic and zeolite-derivative structures which are microporous and/or nanoporous such as the alumino-silicates and the dealuminated zeolite NaA structures. Additional sensing layers may be comprised of (1) a single “nanocomposite” layer comprised of Pd- or Pt-based particles dispersed within an inert matrix, (2) multi-layered sensing layers comprised of a nanocomposite layer with a filter overlayer, (3) core-shell layers comprised of matrix materials surrounding a core of Pd-based or Pt-based nanoparticles, and any combinations of the above.

Inventors:
; ; ;
Issue Date:
Research Org.:
U.S. Dept. of Energy, Washington, D.C. (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1568575
Patent Number(s):
10,345,279
Application Number:
15/641,193
Assignee:
U.S. Department of Energy (Washington, DC)
Resource Type:
Patent
Resource Relation:
Patent File Date: 07/03/2017
Country of Publication:
United States
Language:
English

Citation Formats

Ohodnicki, Jr., Paul R., Sun, Chenhu, Baltrus, John P., and Brown, Thomas D. Palladium and platinum-based nanoparticle functional sensor layers and integration with engineered filter layers for selective H2 sensing. United States: N. p., 2019. Web.
Ohodnicki, Jr., Paul R., Sun, Chenhu, Baltrus, John P., & Brown, Thomas D. Palladium and platinum-based nanoparticle functional sensor layers and integration with engineered filter layers for selective H2 sensing. United States.
Ohodnicki, Jr., Paul R., Sun, Chenhu, Baltrus, John P., and Brown, Thomas D. Tue . "Palladium and platinum-based nanoparticle functional sensor layers and integration with engineered filter layers for selective H2 sensing". United States. https://www.osti.gov/servlets/purl/1568575.
@article{osti_1568575,
title = {Palladium and platinum-based nanoparticle functional sensor layers and integration with engineered filter layers for selective H2 sensing},
author = {Ohodnicki, Jr., Paul R. and Sun, Chenhu and Baltrus, John P. and Brown, Thomas D.},
abstractNote = {The disclosure relates to a method for H2 sensing in a gas stream utilizing a hydrogen sensing material. The hydrogen sensing material is comprised of Pd-based or Pt-based nanoparticles having an average nanoparticle diameter of less than about 100 nanometers dispersed in an inert matrix having a bandgap greater than or equal to 5 eV, and an oxygen ion conductivity less than approximately 10−7 S/cm at a temperature of 700° C. Exemplary inert matrix materials include SiO2, Al2O3, and Si3N4 as well as modifications to modify the effective refractive indices through combinations and/or doping of such materials. Additional exemplary matrix materials consist of zeolitic and zeolite-derivative structures which are microporous and/or nanoporous such as the alumino-silicates and the dealuminated zeolite NaA structures. Additional sensing layers may be comprised of (1) a single “nanocomposite” layer comprised of Pd- or Pt-based particles dispersed within an inert matrix, (2) multi-layered sensing layers comprised of a nanocomposite layer with a filter overlayer, (3) core-shell layers comprised of matrix materials surrounding a core of Pd-based or Pt-based nanoparticles, and any combinations of the above.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}

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Palladium and platinum-based nanoparticle functional sensor layers for selective H2 sensing
patent, July 2017