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2 article(s) from Ramaprabhu, Sundara

TiO₂ hybrid composite

Mamta Sham Lal,
Thirugnanam Lavanya and
Sundara Ramaprabhu

Beilstein J. Nanotechnol. 2019, 10, 781–793, doi:10.3762/bjnano.10.78

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Figure 1: Schematic illustration shows the morphological changes during different synthesis steps.

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Figure 2: Photograph showing the different parts of fabricated symmetric solid-state hybrid supercapacitor (S...

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Figure 3: XRD spectra of CNF, PCNF, Cu/PCNF, TiO₂ and Cu/CuO/PCNF/TiO₂ composites.

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Figure 4: (a) Raman, spectra of CNF, PCNF, Cu/PCNF, TiO₂ and Cu/CuO/PCNF/TiO₂ composites and (b) Raman spectr...

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Figure 5: FE-SEM images of (a) CNF, (c) PCNF, (e) Cu/PCNF, (g) Cu/CuO/PCNF/TiO₂ composites and (b), (d), (f) ...

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Figure 6: TEM image of (a) Cu/PCNF and (c) Cu/CuO/PCNF/TiO₂ composites and (b, d) corresponding magnified ima...

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Figure 7: (a) N₂ adsorption–desorption isotherms of the Cu/CuO/PCNF/TiO₂ composite at 77 K and the (b) differ...

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Figure 8: Energy dispersive X-ray spectrum of Cu/CuO/PCNF/TiO₂.

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Figure 9: Thermogravimetric curve of the Cu/CuO/PCNF/TiO₂ composite.

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Figure 10: (a) Cyclic voltammetry (CV) curve, (b) galvanostatic charge–discharge (GCD) curve of TiO₂, CNF, PCN...

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Figure 11: (a) CV curves for the fabricated SSHSC at different scan rates and (b) GCD curves of SSHSC at diffe...

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Figure 12: (a) Electrochemical impedance spectroscopy (EIS) spectrum of the SSHSC and (b) rate capability plot...

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Figure 13: Capacitance retention and coulombic efficiency of the SSHSC at a current density of 5 A g⁻¹.

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Figure 14: Ragone plot for the SSHSC and comparison with previous literature.

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Full Research Paper

Published 01 Apr 2019

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Development of a nitrogen-doped 2D material for tribological applications in the boundary-lubrication regime

Shende Rashmi Chandrabhan,
Velayudhanpillai Jayan,
Somendra Singh Parihar and
Sundara Ramaprabhu

Beilstein J. Nanotechnol. 2017, 8, 1476–1483, doi:10.3762/bjnano.8.147

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Figure 1: Schematic illustration for the synthesis of N-rGO.

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Figure 2: N-rGO dispersion nanolubricant at different concentration.

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Figure 3: Schematic of the ball-pot assembly in a four-ball tester.

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Figure 4: Coefficient of friction at low N-rGO concentrations.

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Figure 5: Coefficient of friction at high N-rGO concentrations.

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Figure 6: Variation of COF over time for base oil and nanolubricant with N-rGO (3 mg/L).

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Figure 7: Wear scar diameter (WSD) of stainless steel balls lubricated with (a) base oil and (b) N-rGO nanolu...

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Figure 8: Comparison of the measured temperature of base oil and N-rGO (3 mg/L) nanolubricant as a function o...

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Figure 9: Unit load and current of ID fan A and B for (a) Ch 1, (b) Ch 2 before overhaul (replacement of base...

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Figure 10: Power Consumption data for ID Fan A and B for few months.

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Full Research Paper

Published 17 Jul 2017

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An efficient electrode material for high performance solid-state hybrid supercapacitors based on a Cu/CuO/porous carbon nanofiber/TiO2 hybrid composite

Development of a nitrogen-doped 2D material for tribological applications in the boundary-lubrication regime

An efficient electrode material for high performance solid-state hybrid supercapacitors based on a Cu/CuO/porous carbon nanofiber/TiO₂ hybrid composite