List of Articles "organic dyes"

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  1 - Synthesis of copper magnetic nanocomposite based on nanofibrillated cellulose and investigation of its catalytic performance in reduction of dyes
  Fatemeh Aliramezani Hannaneh Heidari
  10.30495/jacr.2022.684653
  In this study, nanofibrillated cellulose (NFC) was used as a green and biodegradable material for the synthesis of copper magnetic nanocomposites without the addition of an external reducing agent or toxic solvents. Initially, nanofibrillated cellulose was magnetized fo More

  In this study, nanofibrillated cellulose (NFC) was used as a green and biodegradable material for the synthesis of copper magnetic nanocomposites without the addition of an external reducing agent or toxic solvents. Initially, nanofibrillated cellulose was magnetized for easy separation using iron chlorides in ammonia medium, then used as a substrate and reducing agent for the formation of copper nanoparticles. The structure of the nanocomposite was characterized by various spectroscopic techniques including X‐ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transforms infrared spectroscopy (FT-IR), Energy dispersive spectroscopy (EDS), and Inductively coupled plasma atomic emission spectroscopy (ICP-OES). The effect of nanocomposite drying methods such as freeze-drying and ambient temperature on catalytic activity was also studied. The results showed that the recyclable magnetic nanocatalyst Fe3O4@NFC/Cu in comparison with other reported catalysts had significant catalytic activity in degradation of three organic dyes (methyl orange, methylene blue, and 4-nitrophenol) with rate constants of 35.1×10-2 s-1 1.48×10-2 s-1 and 5.41×10-2 s-1, respectively. Also, this catalyst was recovered and used 4 times without significant loss of activity. Manuscript profile