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A review on graphitic carbon nitride (g-C3N4) based nanocomposites: Synthesis, categories, and their application in photocatalysis

Ismael, Mohammed

Journal of alloys and compounds, 2020-12, Vol.846, p.156446, Article 156446 [Periódico revisado por pares]

Lausanne: Elsevier B.V

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  • Título:
    A review on graphitic carbon nitride (g-C3N4) based nanocomposites: Synthesis, categories, and their application in photocatalysis
  • Autor: Ismael, Mohammed
  • Assuntos: Carbon ; Carbon nitride ; Carrier mobility ; Current carriers ; Electromagnetic absorption ; Energy conversion ; Energy gap ; Environmental impact ; Environmental remediation ; g-C3N4-based nanocomposite materials ; Heterojunctions ; Hydrogen fuels ; Interfacial charge separation ; Metal oxides ; Nanocomposites ; Nanomaterials ; Photocatalysis ; Photocatalysts ; Pollutants ; Solar energy ; Solar energy conversion ; Structural stability ; Surface area ; Synthesis
  • É parte de: Journal of alloys and compounds, 2020-12, Vol.846, p.156446, Article 156446
  • Descrição: In recent years, heterogeneous photocatalysis using semiconductor and solar energy has gained a lot of attention owing to its potential applications in many fields such as the generation of renewable and sustainable hydrogen fuel, degradation of organic pollutants, and CO2 photoreduction. Due to its photochemical stability, fascinating electronic band structures, and effective light harvesting accompanied by suitable bandgap energy of 2.7 eV, graphitic carbon nitride (g-C3N4) has been considered as a promising metal-free photocatalyst for solving the energy crisis and environmental problems. Nevertheless, due to the low-charge carrier mobility, and low surface area, its photocatalytic efficiency is limited. Because of its unique band structure, coupling it with a large bandgap semiconductor to produce a heterojunction composite offers a promising way to improve the charge separation, expand the surface area, and boost light absorption. For that, g-C3N4 as a robust photocatalyst together with numerous synthesis methods has been highlighted. Three primary systems of g-C3N4-based nanocomposites have been classified and summarized: namely metal oxides, sulfides, and ferrites. We have summarized the latest applications of g-C3N4/nanocomposites in solar energy conversion and environmental remediation. This review ends with an overview and several insights on the problems and future avenues in investigating advanced nanomaterials based on g-C3N4. [Display omitted] •This review highlights the structure and properties of g-C3N4 as photocatalysts.•Advantage and disadvantages of their synthesis methods.•Categories of the g-C3N4-based nanocomposite (mainly ferrites) were highlighted.•Up to date photocatalytic applications were presented in detail.•Interfacial charge separation mechanism was explained in more detail.
  • Editor: Lausanne: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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