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Combustion synthesis of g-C3N4/Fe2O3 nanocomposite for superior photoelectrochemical catalytic performance

Ghane, N ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1016/j.apsusc.2020.147563
  3. Publisher: Elsevier B.V , 2020
  4. Abstract:
  5. The g-C3N4/Fe2O3 nanocomposite was produced by the solution combustion synthesis (SCS) of iron-nitrate/g-C3N4 mixtures of varying concentration ratios and using urea as a fuel. The following methods did characterization of the products: X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller investigation (BET), ultraviolet–visible light analysis (UV–vis) and photoluminescence measurement (PL). Effect of iron nitrate on stability and photocurrent density under simulated visible-light irradiation was determined. The photocurrent density obtained (4.25 μA/Cm2) was twelve times the pure g-C3N4, and higher than those reported for g-C3N4 having Fe2O3. The following mechanisms contributed to the higher photocurrent density achievement: reduction of the bandgap, escalation of the specific area, diminution of the electron-hole recombination, and enhancement of the visible-light harvest—the synthesized nanocomposite decolorized methylene blue three times stronger than pure g-C3N4. The produced g-C3N4/Fe2O3 nanocomposite is, therefore, a potential material for photoelectrochemical cells and pollutant removal applications. © 2020 Elsevier B.V
  6. Keywords:
  7. g-C3N4/Fe2O3 nanocomposite ; Photocatalyst ; Photoelectrochemical activity ; Pollutant removal ; Solution combustion synthesis ; Visible-light ; Aromatic compounds ; Enamels ; Field emission microscopes ; Fourier transform infrared spectroscopy ; Hematite ; High resolution transmission electron microscopy ; Light ; Nanocomposites ; Nitrates ; Photocurrents ; Photoelectrochemical cells ; Scanning electron microscopy ; Semiconductor quantum wells ; Urea ; X ray photoelectron spectroscopy ; Brunauer emmett tellers ; Catalytic performance ; Electron-hole recombination ; Field emission scanning electron microscopy ; Photoelectrochemicals ; Photoluminescence measurements ; Visible-light irradiation ; Combustion synthesis
  8. Source: Applied Surface Science ; Volume 534 , 2020
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0169433220323205#!