NDLI: Switching of selectivity from sulfur dioxide to butane: The role of V2O5 concentration in nanostructured SnO2 sensors

Content Provider	IEEE Xplore Digital Library
Author	Majumdar, Sanhita Nandi, Anupam Datta, Swapan K. Saha, Hiranmay
Copyright Year	2016
Description	Author affiliation: Centre of Excellence for Green Energy and Sensor Systems, IIEST, Shibpur, India (Majumdar, Sanhita; Nandi, Anupam; Datta, Swapan K.; Saha, Hiranmay)
Abstract	Vanadia (V2O5) doped tin dioxide (SnO2) nanocrystallites were synthesized by sonication assisted simultaneous precipitation method, keeping in view their application for LPG (n-butane) gas sensor. The best sensing conditions were determined by studying the sensors under different operating temperatures with different vanadium loading (in the form of V2O5), in presence of 60–65% ambient humidity. 0.50 wt% V2O5 loaded SnO2 exhibits the best sensitivity against butane at 4500C operating temperature, without using any expensive nobel metal catalyst. The same material exhibited a switching in selective sensing of SO2 at a different V2O5 concentration (0.15 wt%), operated at lower temperature (3500C). The nanocrystalline powders were characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM) and current-voltage (I/V) measurement studies. The morphology of V2O5-doped SnO2 nanocrystalline powder is elongated spherical in shape and the distribution of particle size is uniform, having the range of 70–90 nm, as confirmed by SEM and Brunauer-Emmett-Teller (BET) observations.
Starting Page	162
Ending Page	166
File Size	521500
Page Count	5
File Format	PDF
e-ISBN	9781479917693
DOI	10.1109/CMI.2016.7413731
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-08
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Powders Vanadium Butane sensitivity Sonochemical synthesis Temperature sensors Temperature measurement Sensitivity Sulphur di-oxide sensitivity Switching of Selectivity Nanocrystalline powder SnO2 V2O5 doping effect Gas detectors
Content Type	Text
Resource Type	Article

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