Fabrication of LaCrO3@SiO2 Nanoparticles Supported with Graphene-Oxide for Capacitive Energy Storage and Photocatalytic Degradation Applications

Mariam Akram, Malika Rani, Rubia Shafique, Kiran Batool, Mohamed A. Habila, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The feasibility and performance characteristics of a novel ternary nanocomposite reported leading GO@LaCrO3@SiO2 as the electrode material in an electrochemical supercapacitor characterized by X-ray diffraction, Zeta potential, Scanning electron microscopy, Energy dispersive spectroscopy, Fourier transform infrared spectroscopy, Photoluminescence, Ultraviolet–visible spectroscopy, Electrochemical impedance spectroscopy, Cyclic voltammetry and Galvanostatic charge discharge analysis. Crystallite size value about 5.64 nm is evident from XRD whereas surface morphology of nanocomposite reveals reduction in grain size up to 5.28 nm. EDS confirms elemental position of chromium, silicon, carbon, lanthanum and oxygen in the nanocomposite whereas appearing functional groups in synthesized material confirmed by FTIR. PL spectra shows GO, lanthanum perovskite and silicon peaks presence within nanocomposite. Charge transfer resistance is 1.7 Ω relating electron shift rate constant Kappvalue5.78 × 10−9 cm−1 calculated from EIS spectra. Additionally, the electrochemical performance of designed material in supercapacitors at current density value of 0.5 Ag−1 indicating elevated capacitance of 2390 Fg−1with scan rate 10 mVs−1 using 1MKOH aqueous electrolyte resulting power and energy densities of 533.26 W Kg−1 and 10.57 Wh Kg−1 respectively. In case of direct sunlight, the composite possess 2 eV band gap as calculated for UV–Vis spectra that could destroy MB dye at a rate of 89.7%, which is in line with first order kinetics constant attaining value 1.080 × 10−2 min−1. Further outstandingly, the adding up of tetraethyl orthosilicate enhanced the regarding activity of prepared catalytic materials designed to degrade advanced concentration of MB. These results suggested that the newly synthesized nanocomposite has potential as a supercapacitor electrode material with a photocatalyst intend for the oxidation of organic contaminants. Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)361-373
Number of pages13
JournalJournal of Inorganic and Organometallic Polymers and Materials
Volume34
Issue number1
DOIs
Publication statusPublished - Jan 2024
Externally publishedYes

Keywords

  • Electrochemical applications
  • Graphene oxide
  • LaCrO perovskite
  • Photocatalytic degradation
  • TEOS

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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