Next Article in Journal / Special Issue
Fabrication and Characterization of a Micro Methanol Sensor Using the CMOS-MEMS Technique
Previous Article in Journal / Special Issue
Why does the Conductivity of a Nickel Catalyst Increase during Sulfidation? An Exemplary Study Using an In Operando Sensor Device
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(10), 27035-27046; doi:10.3390/s151027035

Nanostructured Tungsten Oxide Composite for High-Performance Gas Sensors

Escuela Secundaria de la Universidad de Puerto Rico, San Juan, PR 00936, USA
Department of Chemistry, King Saud University, Riyadh 11451, Saudi Arabia
Department of Physics, University of Puerto Rico, San Juan, PR 00936, USA
Author to whom correspondence should be addressed.
Academic Editor: Michael Tiemann
Received: 9 June 2015 / Revised: 5 October 2015 / Accepted: 19 October 2015 / Published: 23 October 2015
(This article belongs to the Special Issue Gas Sensors—Designs and Applications)
View Full-Text   |   Download PDF [1266 KB, uploaded 26 October 2015]   |  


We report the results of composite tungsten oxide nanowires-based gas sensors. The morphologic surface, crystallographic structures, and chemical compositions of the obtained nanowires have been investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman scattering, respectively. The experimental measurements reveal that each wire consists of crystalline nanoparticles with an average diameter of less than 250 nm. By using the synthesized nanowires, highly sensitive prototypic gas sensors have been designed and fabricated. The dependence of the sensitivity of tungsten oxide nanowires to the methane and hydrogen gases as a function of time has been obtained. Various sensing parameters such as sensitivity, response time, stability, and repeatability were investigated in order to reveal the sensing ability. View Full-Text
Keywords: tungsten oxide composite nanowires; gas sensor; sensitivity; response tungsten oxide composite nanowires; gas sensor; sensitivity; response

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Chen, S.F.; Aldalbahi, A.; Feng, P.X. Nanostructured Tungsten Oxide Composite for High-Performance Gas Sensors. Sensors 2015, 15, 27035-27046.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top