Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 19, Issue 6, Pages 3429-3436Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2019.16098
Keywords
Microspheres; Hydrothermal; CTAB; SnO2 Nanoparticles; pH
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Funding
- UGC Start-Up Research Grant [F.30-326/2016 (BSR)]
- Alagappa University, Karaikudi, India under the scheme of AURF Fellowship
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The SnO2 nanoparticles formation by hydrothermal method at different experimental conditions such as temperature, pH, reaction time, and capping agent (cetyltrimethylammonium bromide), was studied. X-ray diffraction results confirmed regular rutile crystal structure of SnO2. The characteristic Raman peak observed at 635 cm(-1) corresponded to A(1g) modes of Sn-O vibrations. The study of optical property using photoluminescence confirmed the emissive spectra of SnO2. The infrared peak observed at 618 cm(-1) corresponded to E-u modes of Sn-O vibrations of TO phonon because of E-perpendicular to to c-axis. Scanning electron microscope images clearly revealed the formation of complete SnO2 nanoparticles. The unique SnO2 nanoparticles stacked together to form microspheres at pH-5 showed high specific capacitance of 274.8 F/g at a current density of 0.5 A/g. The observed results confirmed the feasibility of SnO2 nanoparticles being used as appropriate positive electrode candidate for supercapacitor applications.
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