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Title: Ultrathin gas permeable oxide membranes for chemical sensing: Nanoporous Ta2O5 test study

Abstract

Conductometric gas sensors made of gas permeable metal oxide ultrathin membranes can combine the functions of a selective filter, preconcentrator, and sensing element and thus can be particularly promising for the active sampling of diluted analytes. Here we report a case study of the electron transport and gas sensing properties of such a membrane made of nanoporous Ta2O5. These membranes demonstrated a noticeable chemical sensitivity toward ammonia, ethanol, and acetone at high temperatures above 400 °C. Furthermore, different from traditional thin films, such gas permeable, ultrathin gas sensing elements can be made suspended enabling advanced architectures of ultrasensitive analytical systems operating at high temperatures and in harsh environments.

Authors:
 [1];  [1];  [1];  [2];  [2];  [3];  [4]
+ Show Author Affiliations
  1. McMaster Univ., Hamilton, ON (Canada)
  2. Univ. of Brescia and CNR-INO, Brescia (Italy)
  3. Southern Illinois Univ. at Carbondale, Carbondale, IL (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1263868
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Materials
Additional Journal Information:
Journal Volume: 8; Journal Issue: 10; Journal ID: ISSN 1996-1944
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; Ta2O5; metal oxide; ultrathin membrane; gas sensor; gas permeability

Citation Formats

Imbault, Alexander, Wang, Yue, Kruse, Peter, Comini, Elisabetta, Sberveglieri, Giorgio, Kolmakov, Andrei, and Strelcov, Evgheni. Ultrathin gas permeable oxide membranes for chemical sensing: Nanoporous Ta2O5 test study. United States: N. p., 2015. Web. doi:10.3390/ma8105333.
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Imbault, Alexander, Wang, Yue, Kruse, Peter, Comini, Elisabetta, Sberveglieri, Giorgio, Kolmakov, Andrei, & Strelcov, Evgheni. Ultrathin gas permeable oxide membranes for chemical sensing: Nanoporous Ta2O5 test study. United States. https://doi.org/10.3390/ma8105333
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Imbault, Alexander, Wang, Yue, Kruse, Peter, Comini, Elisabetta, Sberveglieri, Giorgio, Kolmakov, Andrei, and Strelcov, Evgheni. Fri . "Ultrathin gas permeable oxide membranes for chemical sensing: Nanoporous Ta2O5 test study". United States. https://doi.org/10.3390/ma8105333. https://www.osti.gov/servlets/purl/1263868.
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@article{osti_1263868,
title = {Ultrathin gas permeable oxide membranes for chemical sensing: Nanoporous Ta2O5 test study},
author = {Imbault, Alexander and Wang, Yue and Kruse, Peter and Comini, Elisabetta and Sberveglieri, Giorgio and Kolmakov, Andrei and Strelcov, Evgheni},
abstractNote = {Conductometric gas sensors made of gas permeable metal oxide ultrathin membranes can combine the functions of a selective filter, preconcentrator, and sensing element and thus can be particularly promising for the active sampling of diluted analytes. Here we report a case study of the electron transport and gas sensing properties of such a membrane made of nanoporous Ta2O5. These membranes demonstrated a noticeable chemical sensitivity toward ammonia, ethanol, and acetone at high temperatures above 400 °C. Furthermore, different from traditional thin films, such gas permeable, ultrathin gas sensing elements can be made suspended enabling advanced architectures of ultrasensitive analytical systems operating at high temperatures and in harsh environments.},
doi = {10.3390/ma8105333},
journal = {Materials},
number = 10,
volume = 8,
place = {United States},
year = {Fri Sep 25 00:00:00 EDT 2015},
month = {Fri Sep 25 00:00:00 EDT 2015}
}
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Journal Article:
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https://doi.org/10.3390/ma8105333
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