Publication result detail

UV-light activated APTES modified WO3-x nanowires sensitive to ethanol and nitrogen dioxide

TOMIC, M.; FOHLEROVÁ, Z.; GRÁCIA, I.; FIGUERAS, E.; CANÉ, C.; VALLEJOS VARGAS, S.

Original Title

UV-light activated APTES modified WO3-x nanowires sensitive to ethanol and nitrogen dioxide

English Title

UV-light activated APTES modified WO3-x nanowires sensitive to ethanol and nitrogen dioxide

Type

WoS Article

Original Abstract

The sensing properties of (3-aminopropyl)triethoxysilane modified tungsten oxide nanowires (APTES@WO3-x) based sensors toward several gases and vapors are reported in this work. The developed sensors show high sensitivity to ethanol and nitrogen dioxide under UV-irradiation at room temperature (24 ºC). Gas sensing results demonstrate enhanced sensing properties for the APTES@WO3-x compared to nonmodified WO3-x sensors, with the APTES@WO3-x sensors showing approximately 17 and 20 times more sensitivity to ethanol and nitrogen dioxide, respectively, compared to the non-modified WO3-x sensors. The APTES@WO3-x sensors also display improved selectivity to nitrogen dioxide (oxidizing gas) and ethanol (among other reducing gases including acetone, toluene, hydrogen, and carbon monoxide). These results are attributed to the presence of the reactive amino group at the APTES@WO3-x sensors, which facilitates the chemical interaction with nitrogen dioxide and ethanol and the electron transfer towards/from WO3-x under UV-light excitation. electron transfer towards/from WO3-x under UV-light excitation.

English abstract

The sensing properties of (3-aminopropyl)triethoxysilane modified tungsten oxide nanowires (APTES@WO3-x) based sensors toward several gases and vapors are reported in this work. The developed sensors show high sensitivity to ethanol and nitrogen dioxide under UV-irradiation at room temperature (24 ºC). Gas sensing results demonstrate enhanced sensing properties for the APTES@WO3-x compared to nonmodified WO3-x sensors, with the APTES@WO3-x sensors showing approximately 17 and 20 times more sensitivity to ethanol and nitrogen dioxide, respectively, compared to the non-modified WO3-x sensors. The APTES@WO3-x sensors also display improved selectivity to nitrogen dioxide (oxidizing gas) and ethanol (among other reducing gases including acetone, toluene, hydrogen, and carbon monoxide). These results are attributed to the presence of the reactive amino group at the APTES@WO3-x sensors, which facilitates the chemical interaction with nitrogen dioxide and ethanol and the electron transfer towards/from WO3-x under UV-light excitation. electron transfer towards/from WO3-x under UV-light excitation.

Keywords

Tungsten oxide; APTES; Nanowires; Gas sensor; UV-light activation

Key words in English

Tungsten oxide; APTES; Nanowires; Gas sensor; UV-light activation

Authors

TOMIC, M.; FOHLEROVÁ, Z.; GRÁCIA, I.; FIGUERAS, E.; CANÉ, C.; VALLEJOS VARGAS, S.

RIV year

2021

Released

01.02.2021

Publisher

Elsevier

ISBN

0925-4005

Periodical

SENSORS AND ACTUATORS B-CHEMICAL

Volume

5

Number

1

State

Swiss Confederation

Pages from

1

Pages to

10

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0925400520313939?utm_campaign=STMJ_AUTH_SERV_PUBLISHED&utm_medium=email&utm_acid=79747982&SIS_ID=&dgcid=STMJ_AUTH_SERV_PUBLISHED&CMX_ID=&utm_in=DM91707&utm_source=AC_

BibTex

@article{BUT165565,
  author="TOMIC, M. and FOHLEROVÁ, Z. and GRÁCIA, I. and FIGUERAS, E. and CANÉ, C. and VALLEJOS VARGAS, S.",
  title="UV-light activated APTES modified WO3-x nanowires sensitive to ethanol and nitrogen dioxide",
  journal="SENSORS AND ACTUATORS B-CHEMICAL",
  year="2021",
  volume="5",
  number="1",
  pages="1--10",
  doi="10.1016/j.snb.2020.129046",
  url="https://www.sciencedirect.com/science/article/pii/S0925400520313939?utm_campaign=STMJ_AUTH_SERV_PUBLISHED&utm_medium=email&utm_acid=79747982&SIS_ID=&dgcid=STMJ_AUTH_SERV_PUBLISHED&CMX_ID=&utm_in=DM91707&utm_source=AC_"
}