Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Tomić, Milena, Šetka, Milena, Chmela, Ondřej, Gràcia, Isabel, Figueras, Eduard, Cané, Carles, Vallejos, Stella
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
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
_version_ 1783384435607994368
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
work_keys_str_mv AT tomicmilena ceriumoxidetungstenoxidecoreshellnanowirebasedmicrosensorssensitivetoacetone
AT setkamilena ceriumoxidetungstenoxidecoreshellnanowirebasedmicrosensorssensitivetoacetone
AT chmelaondrej ceriumoxidetungstenoxidecoreshellnanowirebasedmicrosensorssensitivetoacetone
AT graciaisabel ceriumoxidetungstenoxidecoreshellnanowirebasedmicrosensorssensitivetoacetone
AT figueraseduard ceriumoxidetungstenoxidecoreshellnanowirebasedmicrosensorssensitivetoacetone
AT canecarles ceriumoxidetungstenoxidecoreshellnanowirebasedmicrosensorssensitivetoacetone
AT vallejosstella ceriumoxidetungstenoxidecoreshellnanowirebasedmicrosensorssensitivetoacetone