Publication detail

Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone

TOMIC, M. ŠETKA, M. CHMELA, O. GRACIA, I. FIGUERAS, E. CANÉ, C. VALLEJOS VARGAS, S.

Original Title

Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

gas sensors; volatile organic compounds (VOCs); acetone; metal oxides; heterojunctions

Authors

TOMIC, M.; ŠETKA, M.; CHMELA, O.; GRACIA, I.; FIGUERAS, E.; CANÉ, C.; VALLEJOS VARGAS, S.

Released

23. 11. 2018

Publisher

MDPI AG

ISBN

2079-6374

Periodical

Biosensors

Year of study

8

Number

4

State

Swiss Confederation

Pages from

1

Pages to

12

Pages count

12

URL

http://www.mdpi.com/2079-6374/8/4/116

BibTex

@article{BUT151383,
  author="TOMIC, M. and ŠETKA, M. and CHMELA, O. and GRACIA, I. and FIGUERAS, E. and CANÉ, C. and VALLEJOS VARGAS, S.",
  title="Cerium Oxide-Tungsten Oxide Core-Shell Nanowire-Based Microsensors Sensitive to Acetone",
  journal="Biosensors",
  year="2018",
  volume="8",
  number="4",
  pages="1--12",
  doi="10.3390/bios8040116",
  issn="2079-6374",
  url="http://www.mdpi.com/2079-6374/8/4/116"
}