Temperature dependent selective detection of hydrogen and acetone using Pd doped WO3/reduced graphene oxide nanocomposite

[Display omitted] •Pd doped WO3/RGO nanocomposite has been synthesized by employing self-assembly approach.•The sensor-based on 1.5 mol% Pd and 1 wt% GO exhibits temperature-dependent selectivity feature.•The optimum working temperature of RGO based nanocomposite is significantly reduced.•The role o...

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Bibliographic Details
Published in:Chemical physics letters 2018-06, Vol.701, p.115-125
Main Authors: Kaur, Jasmeet, Anand, Kanica, Kohli, Nipin, Kaur, Amanpreet, Singh, Ravi Chand
Format: Article
Language:English
Subjects:
Gas sensor
Pd doping
Reduced graphene oxide
Temperature dependent selectivity
WO3
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Summary:[Display omitted] •Pd doped WO3/RGO nanocomposite has been synthesized by employing self-assembly approach.•The sensor-based on 1.5 mol% Pd and 1 wt% GO exhibits temperature-dependent selectivity feature.•The optimum working temperature of RGO based nanocomposite is significantly reduced.•The role of Pd doping and RGO is discussed for enhanced sensing performance. Reduced graphene oxide (RGO) and Pd doped WO3 nanocomposites were fabricated by employing electrostatic interactions between poly (diallyldimethylammonium chloride) (PDDA) modified Pd doped WO3 nanostructures and graphite oxide (GO) and studied for their gas sensing application. XRD, Raman, FTIR, FESEM-EDX, TEM, TGA, XPS and Photoluminescence techniques were used for characterization of as-synthesized samples. Gas sensing studies revealed that the sensor with optimized doping of 1.5 mol% Pd and 1 wt% GO shows temperature dependent selectivity towards hydrogen and acetone. The role of WO3, Pd and RGO has been discussed in detail for enhanced sensing performance.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2018.04.049