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Arginine-polyaniline@g-C3N4 for outstanding retention of Orange G dye from water

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(6), pp.1897-1908
  • DOI : 10.1007/s42823-023-00513-3
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : December 18, 2022
  • Accepted : April 4, 2023
  • Published : October 1, 2023

Zouggari Hamid 1 Mahir Fatima-Zahra 1 Imgharn Abdelaziz 1 Hsini Abdelghani 2 Aarab Nouh 1 Laabd Mohamed 1 Albourine Abdallah 1

1Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
2National Higher School of Chemistry (NHSC), University Ibn Tofail, BP. 133, 14000, Kenitra, Morocco

Accredited

ABSTRACT

An eco-friendly material was synthesized through interfacial polymerization of aniline on particles of g-C3N4 with arginine, resulting in Arg-PANI@g-C3N4 composite. The as-synthesized composite was characterized by the Brunauer, Emmett, and Teller (BET) surface area, X-ray energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The adsorption capability of as-synthesized composite towards Orange G (OG) dye has been evaluated under several experimental conditions, such as the adsorbent dosage, initial dye concentration, contact time under agitation, pH of dye solution and temperature. Thermodynamics parameters such as free energy (ΔG°), entropy (ΔS°), and enthalpy (ΔH°) were also calculated and suggested that the adsorption process is spontaneous and endothermic in nature. The kinetics data revealed that the adsorption of OG dye onto Arg-PANI@g-C3N4 follows the pseudo-second order kinetics model. The maximum adsorption capacity was found to be 80.54 mg·g−1. Furthermore, the Arg-PANI@g-C3N4 surface exhibited a Langmuir-like adsorption isotherm in contrast to a Freundlich isotherm due to homogeneous active site distribution. Regeneration investigation showed the excellent reusability of Arg-PANI@g-C3N4 composite during the cleaning up of solution containing OG dye molecules.

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