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      https://www.ias.ac.in/article/fulltext/boms/043/0137

    • Keywords

       

      C$_3$N$_4$/CS NCF photocatalyst; visible light; methyl orange; photodegradation; chitosan.

    • Abstract

       

      To investigate the photocatalytic activities of heterogeneous systems under visible light, graphitic carbon nitride (g-C$_3$N$_4$) and chitosan (CS) were chosen as a model system. By solution cast method, C$_3$N$_4$ were embedded into a CS biopolymer matrix in this study. The purpose is to degrade methyl orange (MO) using a novel C$_3$N$_4$/CS nanocomposite thin film. Using a visible light-equipped photoreactor with a tungsten incandescent lamp, photo-decolourization of dye was carried out. To catalyse the photodegradation of organic dye pollutant MO, a C$_3$N$_4$/CS nanocomposite film photocatalyst was found to be successful and a recovery of 100% of the photocatalyst is achieved by a simple new hand-picking technique.Usingscanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform-infrared spectroscopy and UV–visible diffuse reflectance spectroscopy, detailed characterization was carried out. C$_3$N$_4$/CS has high capacity and better photocatalytic activity compared to g-C$_3$N$_4$ and CS, because C$_3$N$_4$ possesses a larger surface area and CS has highabsorption efficiency which is indicated by the photocatalytic discolouration of MO under visible light irradiation. The C$_3$N$_4$/CS nanocomposite thin film photocatalyst is regarded as an excellent catalyst with 98% degradation efficiency and is prepared by the simple solution cast method. The total organic carbon value was measured to be 86%. These values evidencethat the mineralization of MO was carried out under these conditions.

    • Author Affiliations

       

      KAMATCHI THIYAGARAJAN1 STANLY SAMUEL2 P SENTHIL KUMAR3 SUNDARAM GANESH BABU3 4

      1. Department of Chemistry, Panimalar Engineering College, Poonamallee 600123, India
      2. Department of Applied Chemistry, Sri Venkateswara College of Engineering, Sriperumbudur 602117, India
      3. Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, India
      4. Department of Chemical Engineering, Catalysis Institute, University of Cape Town, Cape Town 7700, South Africa
    • Dates

       
  • Bulletin of Materials Science | News

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