Sensing performance of reduced graphene oxide-Fe doped WO3 hybrids to NO2 and humidity at room temperature

Piloto, C, Shafiei, M, Khan, H, Gupta, B, Tesfamichael, T and Motta, N 2018, 'Sensing performance of reduced graphene oxide-Fe doped WO3 hybrids to NO2 and humidity at room temperature', Applied Surface Science, vol. 434, pp. 126-133.


Document type: Journal Article
Collection: Journal Articles

Title Sensing performance of reduced graphene oxide-Fe doped WO3 hybrids to NO2 and humidity at room temperature
Author(s) Piloto, C
Shafiei, M
Khan, H
Gupta, B
Tesfamichael, T
Motta, N
Year 2018
Journal name Applied Surface Science
Volume number 434
Start page 126
End page 133
Total pages 8
Publisher Elsevier
Abstract Gas sensors operating at room temperature have been fabricated from hybrid films of reduced graphene oxide (rGO) and iron doped (Fe-doped) WO 3 . Films with different rGO layer thicknesses (1-44 nm) obtained by vacuum filtration method were deposited on to a 250 nm thick sputtered Fe-doped WO 3 film. Raman, XPS and SEM were used to investigate the morphology and composition of the films. The sensors were tested towards different concentrations of NO 2 and relative humidity (RH%) at different temperatures ranging from 25 °C to 100 °C. The experimental results revealed that the highest response of the hybrid gas sensors towards these target gases is found to be for rGO layer thickness of 16 nm at room temperature. The sensing mechanisms of the hybrid films for different temperatures and rGO layer thickness were discussed based on the behaviour of the sensors towards the target gases.
Subject Chemical Sciences not elsewhere classified
Keyword(s) DC reactive sputtering
Gas sensing mechanism
Hybrid materials
Reduced graphene oxide
Vacuum filtration
WO films 3
DOI - identifier 10.1016/j.apsusc.2017.10.152
Copyright notice © 2017 Elsevier B.V.
ISSN 0169-4332
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 14 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Altmetric details:
Access Statistics: 4 Abstract Views  -  Detailed Statistics
Created: Tue, 26 Mar 2019, 09:36:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us