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Title: Controlled microcstructure oxide coating for chemical sensors

Abstract

We have investigated the use of porous oxide coatings, formed using sol-gel chemistry routes, as the discriminating elements of acoustic wave (AW) chemical sensors. These coatings provide several unique advantages: durability, high adsorption capacity based on large surface areas, and chemical selectivity based on both molecular size and chemical interactions. The porosity of these coatings is determined by performing nitrogen adsorption isotherms using the AW device response to monitor the uptake of nitrogen at 77 K. The chemical sensitivity and selectivity obtained with this class of coatings will be demonstrated using several examples: hydrous titanate ion exchange coatings, zeolite/silicate microcomposite coatings, and surface modified silicate films. 16 refs., 3 figs., 1 tab.

Authors:
; ; ;  [1];  [2]
  1. Sandia National Labs., Albuquerque, NM (USA)
  2. New Mexico Univ., Albuquerque, NM (USA). Dept. of Chemistry
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (USA)
Sponsoring Org.:
DOE/DP
OSTI Identifier:
6945977
Report Number(s):
SAND-90-1078C; CONF-9006171-2
ON: DE90012223
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Conference
Resource Relation:
Conference: Solid state sensor and actuator workshop, Hilton Head Island, SC (USA), 4-7 Jun 1990
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; COATINGS; SOL-GEL PROCESS; GASES; ACOUSTIC DETECTION; LIQUIDS; ION EXCHANGE; MICROSTRUCTURE; POROSITY; SENSITIVITY; THIN FILMS; ACOUSTIC MEASUREMENTS; CHARGED PARTICLE DETECTION; CRYSTAL STRUCTURE; DETECTION; FILMS; FLUIDS; RADIATION DETECTION; 400100* - Analytical & Separations Chemistry; 360101 - Metals & Alloys- Preparation & Fabrication

Citation Formats

Frye, G C, Brinker, C J, Ashley, C S, Martinez, S L, and Bein, T. Controlled microcstructure oxide coating for chemical sensors. United States: N. p., 1990. Web.
Frye, G C, Brinker, C J, Ashley, C S, Martinez, S L, & Bein, T. Controlled microcstructure oxide coating for chemical sensors. United States.
Frye, G C, Brinker, C J, Ashley, C S, Martinez, S L, and Bein, T. Mon . "Controlled microcstructure oxide coating for chemical sensors". United States.
@article{osti_6945977,
title = {Controlled microcstructure oxide coating for chemical sensors},
author = {Frye, G C and Brinker, C J and Ashley, C S and Martinez, S L and Bein, T},
abstractNote = {We have investigated the use of porous oxide coatings, formed using sol-gel chemistry routes, as the discriminating elements of acoustic wave (AW) chemical sensors. These coatings provide several unique advantages: durability, high adsorption capacity based on large surface areas, and chemical selectivity based on both molecular size and chemical interactions. The porosity of these coatings is determined by performing nitrogen adsorption isotherms using the AW device response to monitor the uptake of nitrogen at 77 K. The chemical sensitivity and selectivity obtained with this class of coatings will be demonstrated using several examples: hydrous titanate ion exchange coatings, zeolite/silicate microcomposite coatings, and surface modified silicate films. 16 refs., 3 figs., 1 tab.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Conference:
Other availability
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