Synthesis of carboxyl-functionalized magnetic nanoparticle for the removal of methylene blue

Zou, Jiaqi; Yimin, Dai; Danyang, Liu; Wang, Shengyun; Li-ling, Zhou; Zhou, Yongkang

doi:10.1016/j.colsurfa.2019.03.095

Cited by 81 publications

(28 citation statements)

References 56 publications

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“…When the pH of MB is regulated to a value lesser than the pKa (pH 2 and 3 in this work), protonation of the MB dye will occur and leave behind a protonated MB (Leucomethylene Blue, LMB) without cationic groups. Hence, the LMB greatly reduced the MB removal efficiency at low pH environment 34 . On the other hand, the formation of LMB is avoided in a pH environment higher than the pKa value of MB (pH 6 to 10 in this study), which resulted in maximum MB removal efficiency.…”

Section: Resultsmentioning

confidence: 66%

“…Hence, the LMB greatly reduced the MB removal efficiency at low pH environment. 34 On the other hand, the formation of LMB is avoided in a pH environment higher than the pKa value of MB (pH 6 to 10 in this study), which resulted in maximum MB removal efficiency. On that account, a higher pH environment (pH 6-10) is able to increase the dye removal efficiency and adsorption capacity.…”

Section: Rapid Magnetophoretic Removal Of Methylene Blue In Water Remmentioning

confidence: 64%

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Study on the enhancement of colloidal stable poly(sodium 4‐styrene sulfonate) coated magnetite nanoparticles and regeneration capability for rapid magnetophoretic removal of organic dye

Chong

Lim

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: A good colloidal stability of magnetite nanoparticles (MNPs) dispersion is of utmost importance for its environmentally related applications. In the present work, a water-soluble anionic polyelectrolyte, poly(sodium 4-styrene sulfonate) (PSS), was used to stabilize dispersions of MNPs in a pH-dependent aqueous medium. RESULTS: An excellent methylene blue (MB) dye removal efficiency at equilibrium of up to 94% has been observed by the colloidally stabilized nano-magnetites. Dynamic light scattering and electrophoretic analysis showed that the PSS-coated MNPs exhibited better colloidal stability, with an almost constant hydrodynamic diameter of ∼150 nm and insignificant clustering behavior throughout the measuring time scale of 5 h. Transmission electron microscopy evidenced the success coating of PSS onto MNPs. In terms of its chemical resistance, the PSS-coated MNPs were able to tolerate a wide pH range from 2 to 10. This work depicts a simple physiochemical coating method to stabilize dispersions of nano-magnetites, which promoted a better MB adsorption capacity of PSScoated MNPs at 14.9 mg g-1 than the naked MNPs at 10.38 mg g-1. The adsorption process follows Langmuir isotherm and pseudo-second-order reaction kinetics with both correlations R 2 > 0.99. PSS-coated MNPs demonstrated outstanding regeneration capacity for four batch adsorption cycles with an almost consistent MB removal efficiency higher than 85%. CONCLUSION: This in-house developed nano-sorbent has potential in economical applications with a less budgeted adsorbent replacement (at least 4 cycles of regeneration) for low-cost separation of pollutants, such as MB from polluted water.

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Section: Resultsmentioning

confidence: 66%

Section: Rapid Magnetophoretic Removal Of Methylene Blue In Water Remmentioning

confidence: 64%

Study on the enhancement of colloidal stable poly(sodium 4‐styrene sulfonate) coated magnetite nanoparticles and regeneration capability for rapid magnetophoretic removal of organic dye

Chong

Lim

et al. 2020

J of Chemical Tech & Biotech

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“…Recently, iron (III) oxide (Fe 3 O 4 ) nanoparticles (NPs) have been used for removing various dyes and heavy metals from water [ 14 , 15 , 16 ]. These NPs are inert, economical, possess unique magnetic properties, and can be easily separated from reaction medium through an external magnetic field [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Studies on the Catalytic Degradation of Rhodamine B by Hydrogen Peroxide: Effect of Surfactant Coated and Non-Coated Iron (III) Oxide Nanoparticles

et al. 2020

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Iron (III) oxide (Fe3O4) and sodium dodecyl sulfate (SDS) coated iron (III) oxide (SDS@Fe3O4) nanoparticles (NPs) were synthesized by the co-precipitation method for application in the catalytic degradation of Rhodamine B (RB) dye. The synthesized NPs were characterized using X-ray diffractometer (XRD), vibrating sample magnetometer (VSM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infra-red (FT-IR) spectroscopy techniques and tested in the removal of RB. A kinetic study on RB degradation by hydrogen peroxide (H2O2) was carried out and the influence of Fe3O4 and SDS@Fe3O4 magnetic NPs on the degradation rate was assessed. The activity of magnetic NPs, viz. Fe3O4 and SDS@Fe3O4, in the degradation of RB was spectrophotometrically studied and found effective in the removal of RB dye from water. The rate of RB degradation was found linearly dependent upon H2O2 concentration and within 5.0 × 10−2 to 4.0 × 10−1 M H2O2, the observed pseudo-first-order kinetic rates (kobs, s−1) for the degradation of RB (10 mg L−1) at pH 3 and temperature 25 ± 2 °C were between 0.4 and 1.7 × 104 s−1, while in presence of 0.1% w/v Fe3O4 or SDS@Fe3O4 NPs, kobs were between 1.3 and 2.8 × 104 s−1 and between 2.6 and 4.8 × 104 s−1, respectively. Furthermore, in presence of Fe3O4 or SDS@Fe3O4, kobs increased with NPs dosage and showed a peaked pH behavior with a maximum at pH 3. The magnitude of thermodynamic parameters Ea and ΔH for RB degradation in presence of SDS@Fe3O4 were 15.63 kJ mol−1 and 13.01 kJ mol−1, respectively, lowest among the used catalysts, confirming its effectiveness during degradation. Furthermore, SDS in the presence of Fe3O4 NPs and H2O2 remarkably enhanced the rate of RB degradation.

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“…For instance, the incorporation of vinyl groups by grafting of 3-(methacryloxypropyl)trimethoxysilane (MPS) to Fe 3 O 4 @SiO 2 nanoparticles allows a radical polymerization reaction to obtain a polymer covering the nanoparticles [41,42]. Jiaqi and co-workers [43] lately proposed a dendritic-like structure to enlarge the magnetic silica nanoparticles area and thus improve their adsorption performance. For this, 3-chloropropyltriethoxysilane (CPTES) were grafted to Fe 3 O 4 @SiO 2 NPs; then a substitution reaction with ethylenediamine and finally a chemical reaction with maleic anhydride were performed.…”

Section: Silica-based Materialsmentioning

confidence: 99%

Nanomaterials with Tailored Magnetic Properties as Adsorbents of Organic Pollutants from Wastewaters

et al. 2020

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Water quality has become one of the most critical issue of concern worldwide. The main challenge of the scientific community is to develop innovative and sustainable water treatment technologies with high efficiencies and low production costs. In recent years, the use of nanomaterials with magnetic properties used as adsorbents in the water decontamination process has received considerable attention since they can be easily separated and reused. This review focuses on the state-of-art of magnetic core–shell nanoparticles and nanocomposites developed for the adsorption of organic pollutants from water. Special attention is paid to magnetic nanoadsorbents based on silica, clay composites, carbonaceous materials, polymers and wastes. Furthermore, we compare different synthesis approaches and adsorption performance of every nanomaterials. The data gathered in this review will provide information for the further development of new efficient water treatment technologies.

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Synthesis of carboxyl-functionalized magnetic nanoparticle for the removal of methylene blue

Cited by 81 publications

References 56 publications

Study on the enhancement of colloidal stable poly(sodium 4‐styrene sulfonate) coated magnetite nanoparticles and regeneration capability for rapid magnetophoretic removal of organic dye

Study on the enhancement of colloidal stable poly(sodium 4‐styrene sulfonate) coated magnetite nanoparticles and regeneration capability for rapid magnetophoretic removal of organic dye

Kinetic Studies on the Catalytic Degradation of Rhodamine B by Hydrogen Peroxide: Effect of Surfactant Coated and Non-Coated Iron (III) Oxide Nanoparticles

Nanomaterials with Tailored Magnetic Properties as Adsorbents of Organic Pollutants from Wastewaters

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