Synthesis of novel nanocomposite Fe3O4/ZrO2/chitosan and its application for removal of nitrate and phosphate

Jiang, Hualin; Chen, Pinghua; Luo, Shenglian; Tu, Xinman; Cao, Qun; Meng, Shujuan

doi:10.1016/j.apsusc.2013.04.013

Cited by 225 publications

(53 citation statements)

References 33 publications

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“…Fe 3 O 4 nanoparticles were synthesized utilizing massart's procedure 28 and then the core-shell Fe 3 O 4 @ZrO 2 was prepared according to the applying method reported previously [29][30][31][32][33] . Briefly, 0.…”

Section: Preparation Of Fe 3 O 4 @Zro 2 Nanoparticlementioning

confidence: 99%

Nanomagnetic zirconia-based sulfonic acid (Fe₃O₄@ZrO₂-Pr-SO₃H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions

2016

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In the present work, sulfonic acid functionalized nanomagnetic zirconia is prepared by the reaction of (3-mercaptopropyl)trimethoxysilane and nanomagnetic zirconia. Then, nanomagnetic zirconia-based sulfonic acid (Fe 3 O 4 @ZrO 2 -Pr-SO 3 H) is synthesized through direct oxidation of thiol group by hydrogen peroxide and H 2 SO 4 subsequently. The catalyst was charactrized by fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM) image, energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), measurement and vibrational sample magnetometry (VSM). It was used as an effective nanocatalyst with high catalytic activity for the protection of alcohols using hexamethyldisilazane (HMDS) under solvent-free conditions at room temperature. The solid nanocatalyst can easily be separated and reused several times without significant loss of its catalytic activity. Also, morethan inexpensive and simplicity of separation process, this heterogeneous catalyst has shown a good chemoselectivity in the reactions.

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Section: Preparation Of Fe 3 O 4 @Zro 2 Nanoparticlementioning

confidence: 99%

Nanomagnetic zirconia-based sulfonic acid (Fe₃O₄@ZrO₂-Pr-SO₃H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions

2016

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“…Biopolymer-based composites have been reported as promising adsorbents for the treatment of wastewater since they show improved properties such as biodegradability and non-toxicity. Various biopolymers and nanoparticles, or a combination of both, have been reported for the removal of pollutants like dyes [9], pesticides [10], heavy metals [11,12] and anions [13] from aqueous environments. Clay-based nanocomposites have become the materials of interest due to their nanosized structural and functional properties.…”

Section: Introductionmentioning

confidence: 99%

Application of novel nanobiocomposites for removal of nickel(II) from aqueous environments: Equilibrium, kinetics, thermodynamics and ex-situ studies

Varghese

Das

2015

Korean J. Chem. Eng.

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The current study presents a novel approach for the removal of Ni(II) from aqueous environments using plant gum-based (PG) and clay-based (CL) nanobiocomposite (NBC) composed of ZnO nanoparticles and chitosan. Parameters like pH, contact time, temperature, initial metal concentration and adsorbent dosage were optimized. Under optimized conditions, maximum removal of Ni(II) was noted as 90.1% and 95.5% in the case of PG-NBC and CL-NBC, respectively. Equilibrium studies suggested a homogeneous mode of adsorption. Good linearity was observed for the pseudo-first order kinetic model, suggesting a physical mode of adsorption. Thermodynamic studies showed an endothermic and spontaneous nature of adsorption. The mechanism was further elucidated using SEM, EDX, AFM and FT-IR analysis. Ex-situ studies showed a maximum Ni(II) removal of 87.34% from electroplating wastewater using CL-NBC in column mode. Regeneration studies suggested that CL-NBC could be consistently reused up to 4 cycles.

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“…are in the interlayer of natural MMT. At present, Zr(IV)-loaded composites have always been investigated for the removal of phosphate from aqueous solutions, such as Zr(IV)-loaded crosslinked chitosan [22], Zr(IV)-loaded fibrous [23], and nanocomposite Fe 3 O 4 /ZrO 2 /chitosan [24]. When it was applied in wastewater treatment, it was often pillared by metal ions and modified by surfactants or it formed composites with other polymers.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of phosphate from aqueous solution by Zr(IV)‐crosslinked quaternized chitosan/bentonite composite

Wang

Liu

et al. 2017

Env Prog and Sustain Energy

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Zr(IV)‐crosslinked HACC/BT composite was prepared and characterized by FTIR, XRD, and SEM techniques. This composite was applied for the adsorption of phosphate ions from aqueous solutions. The factors of various parameters including adsorbent dosage, pH, competing anions, and contact time affecting phosphate adsorption were studied. The adsorption isotherm data were well described by both Langmuir and Freundlich models, and the maximum monolayer adsorption capacity for phosphate was estimated to be 65.35 mg/g at 293 K and natural pH. Kinetic experiments demonstrated that phosphate adsorption fitted better with a pseudo‐second‐order model. The adsorption mechanisms included the electrostatic interaction, ligand exchange, and hydrogen bond formation between phosphate and this composite. Thermodynamic parameters confirmed the exothermic and spontaneous nature of the phosphate adsorption. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 267–275, 2018

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Synthesis of novel nanocomposite Fe3O4/ZrO2/chitosan and its application for removal of nitrate and phosphate

Cited by 225 publications

References 33 publications

Nanomagnetic zirconia-based sulfonic acid (Fe₃O₄@ZrO₂-Pr-SO₃H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions

Nanomagnetic zirconia-based sulfonic acid (Fe₃O₄@ZrO₂-Pr-SO₃H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions

Application of novel nanobiocomposites for removal of nickel(II) from aqueous environments: Equilibrium, kinetics, thermodynamics and ex-situ studies

Adsorption of phosphate from aqueous solution by Zr(IV)‐crosslinked quaternized chitosan/bentonite composite

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Synthesis of novel nanocomposite Fe3O4/ZrO2/chitosan and its application for removal of nitrate and phosphate

Cited by 225 publications

References 33 publications

Nanomagnetic zirconia-based sulfonic acid (Fe3O4@ZrO2-Pr-SO3H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions

Nanomagnetic zirconia-based sulfonic acid (Fe3O4@ZrO2-Pr-SO3H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions

Application of novel nanobiocomposites for removal of nickel(II) from aqueous environments: Equilibrium, kinetics, thermodynamics and ex-situ studies

Adsorption of phosphate from aqueous solution by Zr(IV)‐crosslinked quaternized chitosan/bentonite composite

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Product

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Nanomagnetic zirconia-based sulfonic acid (Fe₃O₄@ZrO₂-Pr-SO₃H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions

Nanomagnetic zirconia-based sulfonic acid (Fe₃O₄@ZrO₂-Pr-SO₃H): a new, efficient and recyclable solid acid catalyst for the protection of alcohols via HMDS under solvent free conditions