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Influence of pH in La-doped SnO2 nanoparticles towards sensor applications

Jayapandi, S and Packiyaraj, P and Premkumar, S and Mayandi, J and Anitha, K (2017) Influence of pH in La-doped SnO2 nanoparticles towards sensor applications. In: 15th Asian Conference on Solid State Ionics (SSI), NOV 27-30, 2016, IIT Patna, Patna, INDIA, pp. 2909-2917.

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Official URL: http://dx.doi.org/10.1007/s11581-017-2121-y


The present investigation has been carried out to optimize the pH level of lanthanum (La)-doped tin dioxide (SnO2) nanoparticles towards the potential application in gas sensor. The La-doped SnO2 nanoparticles were synthesized by sol-gel method in different pH values varying from acidic to base nature. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), ultraviolet (UV), photoluminescence (PL), and scanning electron microscopy (SEM) techniques. The XRD, UV, and PL analyses show the pH influences on the crystallite size of La-doped SnO2 nanoparticles. The SEM images show the formation of porous structure at pH 11. Also, the electrical conductivity of 1 mol% La-doped SnO2 at pH 3 and pH 11 were measured by impedance analyzer. In addition, we have fabricated and demonstrated device performance of synthesized La-doped SnO2 nanoparticles for gas-sensing application. Real-time current response and long-time response to the gas sensing were also studied for the fabricated device.

Item Type: Conference Proceedings
Publication: IONICS
Additional Information: Copy right for this article belongs to the SPRINGER HEIDELBERG, TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 23 Dec 2017 09:21
Last Modified: 23 Dec 2017 09:21
URI: http://eprints.iisc.ac.in/id/eprint/58477

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