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

doi:10.1021/acs.iecr.9b07080

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

Civil Engineering

Research output: Contribution to journal › Article › peer-review

30 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 language	English (US)
Pages (from-to)	7554-7563
Number of pages	10
Journal	Industrial and Engineering Chemistry Research
Volume	59
Issue number	16
DOIs	https://doi.org/10.1021/acs.iecr.9b07080
State	Published - Apr 22 2020

ASJC Scopus subject areas

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

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

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. ",

author = "Yan Zhang and Debin Jiang and Yuan Wang and Zhang, {Tian C.} and Gang Xiang and Zhang, {Yu Xin} and Shaojun Yuan",

note = "Funding Information: The authors are grateful for the financial support of the National Natural Science Foundation of China (21676169 and 21978182), the measurement of XRD and Raman spectra by the Institute of New Energy and Low Carbon Technology of Sichuan University, and XPS measurement by Ceshigo Research Service (http//:www.ceshigo.com). The authors would like to extend special thanks to Dr. Qian Chen in Chongqing University for language polishing. Publisher Copyright: Copyright {\textcopyright} 2020 American Chemical Society.",

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doi = "10.1021/acs.iecr.9b07080",

language = "English (US)",

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AU - Zhang, Yan

AU - Jiang, Debin

AU - Wang, Yuan

AU - Zhang, Tian C.

AU - Xiang, Gang

AU - Zhang, Yu Xin

AU - Yuan, Shaojun

N1 - Funding Information: The authors are grateful for the financial support of the National Natural Science Foundation of China (21676169 and 21978182), the measurement of XRD and Raman spectra by the Institute of New Energy and Low Carbon Technology of Sichuan University, and XPS measurement by Ceshigo Research Service (http//:www.ceshigo.com). The authors would like to extend special thanks to Dr. Qian Chen in Chongqing University for language polishing. Publisher Copyright: Copyright © 2020 American Chemical Society.

PY - 2020/4/22

Y1 - 2020/4/22

N2 - 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.

AB - 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.

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

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