Core-Shell Structured Magnetic γ-Fe2O3@PANI Nanocomposites for Enhanced As(V) Adsorption

Yan Zhang, Debin Jiang, Yuan Wang, Tian C. Zhang, Gang Xiang, Yu Xin Zhang, Shaojun Yuan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Core-shell structured magnetic γ-Fe2O3 coated with proton acid doping polyaniline nanocomposites (γ-Fe2O3@PANI) were synthesized and used to adsorb arsenic(V) in aqueous solutions. Results indicated that the as-synthesized γ-Fe2O3@PANI had a rapid adsorption rate and high adsorption capacity (0.502 mmol/g) for arsenic(V) removal in a pH range of 4 to 11. The adsorption process obeyed a pseudo-second-order kinetic model and was controlled by intraparticle diffusion and external liquid film diffusion. The Redlich-Peterson isotherm model was suitable to simulate the experiment data, indicating that both the physical and chemical adsorption occurred on the heterogeneous adsorption interfaces. The postulated adsorption mechanism of As(V) on the γ-Fe2O3@PANI nanocomposite was possibly ascribed to electrostatic interaction and hydrogen bonding. These results suggest that the magnetic γ-Fe2O3@PANI nanocomposite offers a promising candidate for the adsorption of As(V) in practical applications.

Original languageEnglish (US)
Pages (from-to)7554-7563
Number of pages10
JournalIndustrial and Engineering Chemistry Research
Volume59
Issue number16
DOIs
StatePublished - Apr 22 2020

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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