Cited by 228Layered Double Hydroxides Synthesis and ApplicationsAdsorption and biosorption for pollutant removalChemical Synthesis and Characterization

Polyaniline-Modified Mg/Al Layered Double Hydroxide Composites and Their Application in Efficient Removal of Cr(VI)

Zhu, Kairuo, Gao, Yang, Tan, Xiaoli, Chen, Changlun·2016·ACS Sustainable Chemistry & Engineering

Abstract

The organic–inorganic hybrid material of polyaniline/Mg/Al layered double hydroxides (PANI/LDHs) was fabricated through in situ oxidative polymerization. PANI/LDHs were characterized by field emission scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The results showed that PANI was successfully grown on PANI/LDHs. PANI/LDHs were further applied to remove Cr(VI) from aqueous solution, which exhibited outstanding removal capacity toward Cr(VI) (393.70 mg/g), comparable to Cr(VI) removal on PANI nanotubes (198.67 mg/g) and many other materials. The adsorption kinetics followed the pseudo-second-order model. The adsorption of Cr(VI) on PANI/LDHs was highly pH dependent. The Langmuir model described the adsorption isotherm data better than the Freundlich model. Thermodynamic parameters for the adsorption system were calculated and suggested that the adsorption process was spontaneous and endothermic. As a result, this study indicates that PANI/LDHs may be ideal materials for Cr(VI) wastewater treatment.

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Crossref · 10.1021/acssuschemeng.6b00922

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Authors
Zhu, K., Gao, Y., Tan, X., & Chen, C.
Affiliations
  • University of Science and Technology of China (CN)
  • Chinese Academy of Sciences (CN)
Corresponding author
Chen, Changlun
Venue
ACS Sustainable Chemistry & Engineering
Published
2016-06-29
Volume
4
Issue
8
Pages
4361-4369
ISSN
2168-0485 (ISSN-L)
OpenAlex
W2440425374
Cited by
228
References
41
Citations by year
2026: 9 · 2025: 10 · 2024: 13 · 2023: 25 · 2022: 34 · 2021: 23 · 2020: 29 · 2019: 28 · 2018: 37 · 2017: 18 · 2016: 2
FWCI
12.61
Type
journal article
Language
en
Open access
closed
Locations
ACS Sustainable Chemistry & Engineering (publishedVersion)
Funders
National Natural Science Foundation of China (21477133, 41273134)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Layered Double Hydroxides Synthesis and Applications
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Chemical Synthesis and Characterization
Keywords
polyaniline, Mg-Al layered double hydroxide, organic-inorganic hybrid materials, hexavalent chromium removal, Cr(VI) adsorption, wastewater treatment, in situ oxidative polymerization, adsorption kinetics, adsorption isotherms, adsorption thermodynamics, pH dependence

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