Publication detail

Selectively arranged single-wire based nanosensor array systems for gas monitoring

CHMELA, O. SADÍLEK, J. SAMÀ, DOMÈNECH-GIL, G. J. SOMER, J. MOHAN, R. ROMANO-RODRIGUEZ, A. HUBÁLEK, J. VALLEJOS VARGAS, S.

Original Title

Selectively arranged single-wire based nanosensor array systems for gas monitoring

Type

journal article in Web of Science

Language

English

Original Abstract

Gas nanosensors, comprised of arrays of nanoelectrodes with finger-widths of ~100 nm developed by electron beam lithography and aerosol assisted chemical vapor deposited non-functionalized and Pt-functionalized tungsten oxide nanowires (<100 nm) subsequently integrated across the pairs of electrodes via dielectrophoresis method, are developed in this work. The functionality of these devices is validated towards various concentrations of NO2 and C2H5OH, and results demonstrate reproducible and consistent responses with better sensitivity and partial selectivity for the non-functionalized systems to NO2, as opposed to the Pt-functionalized systems, which display better sensing properties towards C2H5OH with a loss of response to NO2. These results are explained on the basis of the additional chemical and electronic interactions at the Pt/tungsten oxide interface, which increase the pre-adsorption of oxygen species and make the functionalized surface rather more sensitive to C2H5OH than to NO2, in contrast to the non-functionalized surface.

Keywords

Gas sensor, nanosensor, nanoelectrodes, nanowires

Authors

CHMELA, O.; SADÍLEK, J.; SAMÀ, DOMÈNECH-GIL, G.; J.; SOMER, J.; MOHAN, R.; ROMANO-RODRIGUEZ, A.; HUBÁLEK, J.; VALLEJOS VARGAS, S.

Released

1. 5. 2018

Publisher

Royal Society of Chemistry

ISBN

2040-3372

Periodical

Nanoscale

Year of study

10

Number

19

State

United Kingdom of Great Britain and Northern Ireland

Pages from

9087

Pages to

9096

Pages count

10

URL

http://pubs.rsc.org/en/content/articlelanding/2018/nr/c8nr01588k#!divAbstract

Full text in the Digital Library

http://hdl.handle.net/11012/84141

BibTex

@article{BUT146943,
  author="CHMELA, O. and SADÍLEK, J. and SAMÀ, DOMÈNECH-GIL, G. and J. and SOMER, J. and MOHAN, R. and ROMANO-RODRIGUEZ, A. and HUBÁLEK, J. and VALLEJOS VARGAS, S.",
  title="Selectively arranged single-wire based nanosensor array systems for gas monitoring",
  journal="Nanoscale",
  year="2018",
  volume="10",
  number="19",
  pages="9087--9096",
  doi="10.1039/c8nr01588k",
  issn="2040-3372",
  url="http://pubs.rsc.org/en/content/articlelanding/2018/nr/c8nr01588k#!divAbstract"
}