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Vol. 32 No. 8 (2020): Vol 32 Issue 8, 2020

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Lanthanum Doped Strontium Titanate Nanomaterial for Photocatalytic and Supercapacitor Applications

https://doi.org/10.14233/ajchem.2020.22725
V.V. Deshmukh
Department of Physics, Shri Shivaji Science College, Amravati-444602, India
H.P. Nagaswarupa
P.G. Department of Chemistry, Davanagere University, Davanagere-577001, India
C.R. Ravikumar
Research Centre, Department of Science, East West Institute of Technology, Bangalore-560091, India
https://orcid.org/0000-0002-4692-444X
M.R. Anil Kumar Anil Kumar
Research Centre, Department of Science, East West Institute of Technology, Bangalore-560091, India
T.R. Shashi Shekhar
Research Centre, Department of Science, East West Institute of Technology, Bangalore-560091, India
H.C. Ananda Murthy
Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, PO Box 1888, Adama, Ethiopia

Corresponding Author(s) : V.V. Deshmukh

vaishalideshmukh27@gmail.com

Asian Journal of Chemistry, Vol. 32 No. 8 (2020): Vol 32 Issue 8, 2020

Abstract

We report the synthesis of lanthanum doped strontium titanate (Sr1-xLaxTiO3,x=0.1) by sol-gel method. The physical properties of the as-synthesized sample were systematically studied  through X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDAX). Diffraction peaks in XRD supported the cubic formation of perovskite-type crystal structure. The image analysis of nanomaterial by SEM and TEM techniques disclosed aggregates of nanoparticles with  grain size about 20 nm. The study by UV-DRS exposed the band energy gaps (Eg) of 3.4 eV for strontium titanate nanoparticles, respectively. The degradation studies for three days were  carried out for three dyes. Malachite green and rhodamine blue, strontium titanate nanoparticles showed utmost photocatalytic activity for rhodamine blue under UV light irradiation  (from 0 to 80 min) as compared to malachite green. Properties of electrochemistry were looked into by cyclic voltammetry and galvanostatic charge/discharge in 1M KCl electrolyte. The  Sr0.9La0.1TiO3 electrode displayed maximal specific capacitance of 306.74 F g-1 at current 1mA from galvanostatic charge-discharge curve. The rare earth doped perovskite Sr0.9La0.1TiO3  nanomaterial exhibited increased surface area with superior supercapacitance property. 

Keywords

Supercapacitor Sr0.9La0.1TiO3 Perovskite Cyclic voltammetry Capacitive performance
Deshmukh, V. ., Nagaswarupa, H. ., Ravikumar, C. ., Anil Kumar, M. A. K., Shekhar, T. S. ., & Ananda Murthy, H. . (2020). Lanthanum Doped Strontium Titanate Nanomaterial for Photocatalytic and Supercapacitor Applications. Asian Journal of Chemistry, 32(8), 2013–2020. https://doi.org/10.14233/ajchem.2020.22725
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