Selective adsorption of cationic dyes from aqueous solution by polyoxometalate-based metal–organic framework composite

Liu, Xiaoxia; Gong, Weiping; Luo, Jing; Zou, Chentao; Yang, Yun; Shui-jin, Yang

doi:10.1016/j.apsusc.2015.11.151

Cited by 178 publications

(53 citation statements)

References 59 publications

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“…To eliminate heavy metal ions from aquatic streams, numerous physicochemical and biological techniques including chemical oxidation and reduction, adsorption, ion exchange, reverse osmosis, membrane separation and electrochemical treatments have been extensively applied. [1][2][3][4][5] Among these techniques, adsorption is recognized as the most effective method due to its high selectivity, easy manipulation and environmental issues.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a poly(amidoxime-hydroxamic acid) cellulose derivative and its application in heavy metal ion removal

et al. 2017

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Amidoxime and hydroxamic acid functional groups have comparable chelating ability with synthetic resins, but the synthesis of cellulose fibers bearing amidoxime and hydroxamic acid functional groups using simple and effective strategies have yet to be developed. In this study, a poly(amidoxime-hydroxamic acid) cellulose derivative (pAHA-cellulose) was prepared via free radical polymerization followed by an oximation reaction. A series of microscopic analyses and spectral tests proved that the pAHA-cellulose was covered with uniform amidoxime and hydroxamic acid functional groups. The use of pAHAcellulose towards heavy metal ion removal was investigated and an uptake equilibrium was achieved within 60 min for Cu 2+ and Zn 2+ , and 120 min for Pb 2+ and Cr 3+, through a chelation mechanism. The adsorption behavior followed the pseudo-second-order kinetic model and Langmuir isotherm with and Zn 2+ , respectively. Regeneration of pAHA-cellulose did not significantly influence the adsorption towards metal ions for up to five sequential cycles. Considering the simple and efficient grafting process, excellent adsorbability and prominent renewability, pAHA-cellulose is believed to be a new and feasible candidate for heavy metal ion removal from aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Synthesis of a poly(amidoxime-hydroxamic acid) cellulose derivative and its application in heavy metal ion removal

et al. 2017

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“…fabricated a magnetic adsorbent, NH 2 ‐Fe 3 O 4 /CoW 12 NP which possessed excellent MB adsorption and exhibited selective adsorption between cationic and anionic dye molecules from a binary mixture. The composite H 6 P 2 W 18 O 62 /MOF‐5 exhibited a rapid and selective adsorption ability towards the cationic dye methylene blue instead of anionic dye methyl orange in aqueous solution as reported by X. Liu et.al . Recently, ionic liquids polyoxometalate hybrid materials are proven to be a promising adsorbent for the removal of dyes from waste water.…”

Section: Introductionmentioning

confidence: 56%

“…Accordingly, various modifications like encapsulation into host materials or alkali metal ion exchange with organic cations are made to increase their activity and better recoverability . Polyoxometalate based hybrids have been used as adsorbents of selective dyes from its aqueous solutions . Zhu et.al .…”

Section: Introductionmentioning

confidence: 99%

Vanadium-Substituted Polyoxometalate Ionic Liquid Hybrids: Effect of Alkyl Chain on Dye Removal

Chandhru

Ramalingam

Manickam³

et al. 2017

ChemistrySelect

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Vanadium substituted polyoxometalate ionic liquids (POM‐ILs) with increase in alkyl chain lengths, C4MImPV3W9O40, C8MImPV3W9O40, and C16MImPV3W9O40 were prepared by simple ion exchange method. These materials were characterized by elemental analysis, FTIR, electron microscopy, and thermal analysis. The dye removal ability towards methylene blue and methyl orange was studied under neutral pH. The dye removal rate of C4MImPV3W9O40 and C8MImPV3W9O40 towards methylene blue was 95%. The dye removal rate of C16MImPV3W9O40 towards methyl orange was 92%.

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“…much higher uptake capacity of MB, compared with the adsorbents that were reported. [74][75][76][77][78][79][80][81][82][83][84][85][86][87] On the basis of the above observations and the characteristics of Fe 3 O 4 /GO-NH 2 /H 3 PMo 12 O 40 nanocomposite, we infer that the following factors could contribute to the increased adsorption capacity of this nanocomposite. On the one hand, the anchored aminopropyl groups and the presence of the well dispersed Fe 3 O 4 and H 3 PMo 12 O 40 nanoparticles on the GO nanosheets surface could act as spacers and thus prohibit the graphene sheets to restack.…”

Section: The Reusability and Stability Of The Hybrid Nanomaterialsmentioning

confidence: 96%

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

Farhadi¹,

Hakimi²,

Maleki³

2017

ACSi

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In this study, the PMo 12 O 40 3− polyanion was immobilized chemically on amino functionalized magnetic graphene oxide nanosheets. The as-prepared ternary magnetic nanocomposite (Fe 3 O 4 /GO-NH 2 /H 3 PMo 12 O 40 ) was characterized by powder X-ray powder diffraction (XRD), fourier transformation infrared spectroscopy (FTIR), Raman spectroscopy, energy dispersive spectroscopy (EDX), field emission scanning electron microscopy (FESEM), BET surface area measurements, magnetic measurements (VSM) and atomic force microscopy (AFM). The results demonstrated the successful loading of H 3 PMo 12 O 40 (~36.5 wt.%) on the surface of magnetic graphene oxide. The nanocomposite showed a higher specific surface area (77.07 m 2 /g) than pure H 3 PMo 12 O 40 (≤10 m 2 /g). The adsorption efficiency of this nanocomposite for removing methylene blue (MB), rhodamine B (RhB) and methyl orange (MO) from aqueous solutions was evaluated. The nanocomposite showed rapid and selective adsorption for cationic dyes from mixed dye solutions. The adsorption rate and capacity of Fe 3 O 4 /GO-NH 2 /H 3 PMo 12 O 40 were enhanced as compared with GO, GO-NH 2 , Fe 3 O 4 /GO-NH 2 , and H 3 PMo 12 O 40 samples due to enhanced electrostatic attraction and hydrogen-bonding interactions. The nanocomposite is magnetically separated and reused without any change in structure. Thus, it could be a promising green adsorbent for removing organic pollutants in water.

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Selective adsorption of cationic dyes from aqueous solution by polyoxometalate-based metal–organic framework composite

Cited by 178 publications

References 59 publications

Synthesis of a poly(amidoxime-hydroxamic acid) cellulose derivative and its application in heavy metal ion removal

Synthesis of a poly(amidoxime-hydroxamic acid) cellulose derivative and its application in heavy metal ion removal

Vanadium-Substituted Polyoxometalate Ionic Liquid Hybrids: Effect of Alkyl Chain on Dye Removal

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

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