Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 Apr 2;11(4):607.
doi: 10.3390/polym11040607.

Preparation and Characterization of Magadiite⁻Magnetite Nanocomposite with Its Sorption Performance Analyses on Removal of Methylene Blue from Aqueous Solutions

Mingliang Ge  1   2   3 , Zhuangzhuang Xi  4 , Caiping Zhu  5 , Guodong Liang  6 , Guoqing Hu  7 , Lafifa Jamal  8 , Jahangir Alam S M  9   10
Affiliations

Preparation and Characterization of Magadiite⁻Magnetite Nanocomposite with Its Sorption Performance Analyses on Removal of Methylene Blue from Aqueous Solutions

Mingliang Ge et al. Polymers (Basel). .

Abstract

The magadiite⁻magnetite (MAG⁻Fe₃O₄) nanocomposite has great potential applications in the field of biomaterials research. It has been used as a novel magnetic sorbent, prepared by co-precipitation method. It has the dual advantage of having the magnetism of Fe₃O₄ and the high adsorption capacity of pure magadiite (MAG). MAG⁻Fe₃O₄ was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM). The results showed that Fe₃O₄ nanoparticles were deposited on the interlayer and surface of magadiite. MAG⁻Fe₃O₄ was treated as an adsorbent for methylene blue (MB) removal from aqueous solutions. The adsorption properties of MAG⁻Fe₃O₄ were investigated on methylene blue; however, the results showed that the adsorption performance of MAG⁻Fe₃O₄ improved remarkably compared with MA and Fe₃O₄. The adsorption capacity of MAG⁻Fe₃O₄ and the removal ratio of methylene blue were 93.7 mg/g and 96.2%, respectively (at 25 °C for 60 min, pH = 7, methylene blue solution of 100 mg/L, and the adsorbent dosage 1 g/L). In this research, the adsorption experimental data were fitted and well described using a pseudo-second-order kinetic model and a Langmuir adsorption isotherm model. The research results further showed that the adsorption performance of MAG⁻Fe₃O₄ was better than that of MAG and Fe₃O₄. Moreover, the adsorption behavior of MB on MAG⁻Fe₃O₄ was investigated to fit well in the pseudo-second-order kinetic model with the adsorption kinetics. The authors also concluded that the isothermal adsorption was followed by the Langmuir adsorption isotherm model; however, it was found that the adsorption of the MAG⁻Fe₃O₄ nanocomposite was a monolayer adsorption.

Keywords: Fe3O4; adsorption; magadiite; magnetic; methylene blue; nanocomposite.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.

Figures

Figure 1
Figure 1
XRD patterns of (a) MAG, (b) Fe3O4, and (c) MAG–Fe3O4.
Figure 2
Figure 2
FTIR patterns of (a) MAG, (b) Fe3O4, and (c) MAG–Fe3O4.
Figure 3
Figure 3
SEM images of (a) MAG [48], and (b) MAG–Fe3O4; and hysteresis loops of (c) Fe3O4, and (d) MAG–Fe3O4.
Figure 4
Figure 4
Dispersion of composite MAG–Fe3O4 in deionized water: (a) before the action of the magnetic field, and (b) after the action of the magnetic field; (c) Adsorption capacity of MAG, Fe3O4, and MAG–Fe3O4 (At 25 °C, pH = 7, 100 mg/L MB solution, 1.0 g/L MAG–Fe3O4); and effects of (d) MAG–Fe3O4 dosage on adsorption capacity and removal rate, (e) pH on adsorption capacity and removal rate, (f) initial concentration of MB on adsorption capacity and removal rate, (g) adsorption time on adsorption capacity and removal rate.
Figure 4
Figure 4
Dispersion of composite MAG–Fe3O4 in deionized water: (a) before the action of the magnetic field, and (b) after the action of the magnetic field; (c) Adsorption capacity of MAG, Fe3O4, and MAG–Fe3O4 (At 25 °C, pH = 7, 100 mg/L MB solution, 1.0 g/L MAG–Fe3O4); and effects of (d) MAG–Fe3O4 dosage on adsorption capacity and removal rate, (e) pH on adsorption capacity and removal rate, (f) initial concentration of MB on adsorption capacity and removal rate, (g) adsorption time on adsorption capacity and removal rate.
Figure 5
Figure 5
Simulated curves of kinetic equation for MB adsorption on MAG–Fe3O4: (a) pseudo-first-order model, and (b) pseudo-second-order model; and fitted adsorption isotherm models: (c) Langmuir model for adsorption of MB on MAG–Fe3O4, and (d) Freundlich model for adsorption of MB on MAG–Fe3O4.
Figure 6
Figure 6
Recycling of MAG-Fe3O4
See this image and copyright information in PMC

References

    1. Huang P., Kazlauciunas A., Menzel R., Lin L. Determining the Mechanism and Efficiency of Industrial Dye Adsorption through Facile Structural Control of Organo-montmorillonite Adsorbents. ACS Appl. Mater. Interfaces. 2017;9:26383–26391. doi: 10.1021/acsami.7b08406. - DOI - PubMed
    1. Zhao M., Liu P. Adsorption behavior of methylene blue on halloysite nanotubes. Microporous Mesoporous Mater. 2008;112:419–424. doi: 10.1016/j.micromeso.2007.10.018. - DOI
    1. Weng C.-H., Pan Y.-F. Adsorption of a cationic dye (methylene blue) onto spent activated clay. J. Hazard. Mater. 2007;144:355–362. doi: 10.1016/j.jhazmat.2006.09.097. - DOI - PubMed
    1. Gong J.L., Wang B., Zeng G.M., Yang C.P., Niu C.G., Niu Q.Y., Zhou W.J., Liang Y. Removal of cationic dyes from aqueous solution using magnetic multi-wall carbon nanotube nanocomposite as sorbent. J. Hazard. Mater. 2009;164:1517–1522. doi: 10.1016/j.jhazmat.2008.09.072. - DOI - PubMed
    1. Fatimah S., Wang D. Wulandari, ZnO/montmorillonite for photocatalytic and photochemical degradation of methylene blue. Appl. Clay Sci. 2011;53:553–560. doi: 10.1016/j.clay.2011.05.001. - DOI

LinkOut - more resources