Publications by authors named "V K Siva"

Solid polymer electrolytes (SPEs) for symmetrical supercapacitors are proposed herein with activated carbon as electrodes and optimized solid polymer electrolyte membranes, which serve as the separators and electrolytes. We propose the design of a low-cost solid polymer electrolyte consisting of guanidinium nitrate (GuN) and poly(ethylene oxide) (PEO) with poly(vinylpyrrolidone) (PVP). Using the solution casting approach, blended polymer electrolytes with varying GuN weight percentage ratios of PVP and PEO are prepared.

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  • Novel flake-like NiSnO particles were created using a hydrothermal method and characterized to reveal their nanoflake structure and mixed-phase characteristics.
  • Characterization techniques like FTIR and EDS confirmed the chemical composition, showing that Ni doping affects SnO's lattice structure.
  • The 5% Ni-doped SnO demonstrated impressive electrochemical performance, achieving a specific capacitance of 841.85 F/g, with a redox additive boosting it to 2130.33 F/g, indicating potential for high-performance supercapacitor applications.
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  • - The modern chemical industry aims for low-cost, high-quality production while minimizing environmental impact, leading to the need for effective wastewater treatment solutions.
  • - The study focused on creating nanoscale cadmium sulfide (CdS) and polypyrrole (PPy) composites for degrading organic pollutants, using various characterization techniques to confirm their proper integration.
  • - The developed CdS@PPy nanocomposites demonstrated significant efficiency in degrading pollutants like methylene blue and rhodamine B under visible light, maintaining high effectiveness even after multiple cycles of use.
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New cobalt(II), copper(II), and zinc(II) Schiff metal complexes were synthesized by the condensation reaction of 4-nitrobenzene-1,2-diamine with 3-4-(diethylamino)-2-hydroxybenzaldehyde. Fourier transform infrared, nuclear magnetic resonance, ultraviolet-visible, electron paramagnetic resonance, and high-resolution electrospray ionization mass spectrometry and powder X-ray diffraction were used to characterize the synthesized HL and its metal complexes. Conductance measurements, magnetic moment estimation, and metal estimation have all been determined and discussed.

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