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Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone
Gas sensitive cerium oxide-tungsten oxide core-shell nanowires are synthesized and integrated directly into micromachined platforms via aerosol assisted chemical vapor deposition. Tests to various volatile organic compounds (acetone, ethanol, and toluene) involved in early disease diagnosis demonstr...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316039/ https://www.ncbi.nlm.nih.gov/pubmed/30477177 http://dx.doi.org/10.3390/bios8040116 |
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author | Tomić, Milena Šetka, Milena Chmela, Ondřej Gràcia, Isabel Figueras, Eduard Cané, Carles Vallejos, Stella |
author_facet | Tomić, Milena Šetka, Milena Chmela, Ondřej Gràcia, Isabel Figueras, Eduard Cané, Carles Vallejos, Stella |
author_sort | Tomić, Milena |
collection | PubMed |
description | Gas sensitive cerium oxide-tungsten oxide core-shell nanowires are synthesized and integrated directly into micromachined platforms via aerosol assisted chemical vapor deposition. Tests to various volatile organic compounds (acetone, ethanol, and toluene) involved in early disease diagnosis demonstrate enhanced sensitivity to acetone for the core-shell structures in contrast to the non-modified materials (i.e., only tungsten oxide or cerium oxide). This is attributed to the high density of oxygen vacancy defects at the shell, as well as the formation of heterojunctions at the core-shell interface, which provide the modified nanowires with ‘extra’ chemical and electronic sensitization as compared to the non-modified materials. |
format | Online Article Text |
id | pubmed-6316039 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63160392019-01-09 Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone Tomić, Milena Šetka, Milena Chmela, Ondřej Gràcia, Isabel Figueras, Eduard Cané, Carles Vallejos, Stella Biosensors (Basel) Article Gas sensitive cerium oxide-tungsten oxide core-shell nanowires are synthesized and integrated directly into micromachined platforms via aerosol assisted chemical vapor deposition. Tests to various volatile organic compounds (acetone, ethanol, and toluene) involved in early disease diagnosis demonstrate enhanced sensitivity to acetone for the core-shell structures in contrast to the non-modified materials (i.e., only tungsten oxide or cerium oxide). This is attributed to the high density of oxygen vacancy defects at the shell, as well as the formation of heterojunctions at the core-shell interface, which provide the modified nanowires with ‘extra’ chemical and electronic sensitization as compared to the non-modified materials. MDPI 2018-11-23 /pmc/articles/PMC6316039/ /pubmed/30477177 http://dx.doi.org/10.3390/bios8040116 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Tomić, Milena Šetka, Milena Chmela, Ondřej Gràcia, Isabel Figueras, Eduard Cané, Carles Vallejos, Stella Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone |
title | Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone |
title_full | Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone |
title_fullStr | Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone |
title_full_unstemmed | Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone |
title_short | Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone |
title_sort | cerium oxide-tungsten oxide core-shell nanowire-based microsensors sensitive to acetone |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316039/ https://www.ncbi.nlm.nih.gov/pubmed/30477177 http://dx.doi.org/10.3390/bios8040116 |
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