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

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon letters / 33권 / 6호
ㆍ저자명 : Hamid Zouggari, Fatima‑Zahra Mahir, Abdelaziz Imgharn, Abdelghani Hsini, Nouh Aarab, Mohamed Laabd, Abdallah Albourine

목차

Arginine-polyaniline@g-C3N4 for outstanding retention of Orange G dye from water
Abstract
1 Introduction
2 Experimental
2.1 Material and methods
2.2 Preparation of g-C3N4
2.3 Elaboration of Arg-PANI@ g-C3N4 composite
2.4 Characterization techniques
2.5 Batch experimental
2.6 Arg-PANI@g-C3N4 regeneration
3 Results and discussions
3.1 Characterization
3.1.1 Surface morphology and EDS spectroscopy
3.1.2 FT-IR spectroscopy
3.1.3 XRD analysis
3.1.4 N2 adsorptiondesorption
3.2 Adsorption study
3.2.1 Effect of adsorbent dosage
3.2.2 Effect of initial pH
3.2.3 Adsorption kinetics
3.2.4 Adsorption equilibrium and thermodynamic study
3.2.5 Comparison with other adsorbents
3.2.6 Regeneration of Arg-PANI@g-C3N4 composite
4 Conclusion
References

영어 초록

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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