Development of zirconium (IV)-metalloporphyrin grafted Fe3O4 nanoparticles for efficient fluoride removal

Poursaberi, Tahereh; Hassanisadi, Mostafa; Torkestani, K.; Zare, Mehdi

doi:10.1016/j.cej.2012.02.039

Cited by 114 publications

(31 citation statements)

References 90 publications

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“…It can be seen that the sorption capacity and distribution ratio of Ad.4 for U(VI) and Cu(II) ions were higher than those of other adsorbents. As can be seen in Table 1, the sorption affinity of metal ions onto the Ad.4 [27]. The characteristic bands of 2,922 and 1,434 cm -1 are attributed to the C-H stretching and C-H bending of PVA, respectively.…”

Section: Resultsmentioning

confidence: 96%

Selective sorption of U(VI) from aqueous solutions using a novel aminated Fe3O4@SiO2/PVA nanofiber adsorbent prepared by electrospinning method

Mirzabe

Keshtkar

2014

J Radioanal Nucl Chem

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A novel electrospun Fe 3 O 4 @SiO 2 @APTES/ PVA nanofiber adsorbent for U(VI) sorption was synthesized and characterized by FTIR, SEM, BET and TG analyses. The effects of pH, nanoparticles content, adsorbent dose, contact time, initial U(VI) concentration, temperature and co-existing ions were studied in batch experiments. The sorption affinity of metal ions onto adsorbent was U. The kinetic and isotherm data were accurately described by the doubleexponential and Langmuir model, with a maximum sorption capacity of 68.96 mg/g with a pH of 5. Thermodynamic parameters were evaluated to understand the nature of sorption process. The reusability of adsorbent was determined after five sorption-desorption cycles.

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Section: Resultsmentioning

confidence: 96%

Selective sorption of U(VI) from aqueous solutions using a novel aminated Fe3O4@SiO2/PVA nanofiber adsorbent prepared by electrospinning method

Mirzabe

Keshtkar

2014

J Radioanal Nucl Chem

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“…In γ- Figure 2b is observed that when APTES surface density increase, the decomposition temperature range increases. This could be associated with an increase in thermal stability [31,32].…”

Section: -Results and Discussionmentioning

confidence: 99%

Synthesis of silanized maghemite nanoparticles onto reduced graphene sheets composites

Cosio‐Castaneda

Martínez-Garcı́a

Socolovsky

2014

Solid State Sciences

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Novel γ-Fe 2 O 3 @APTES@rGO composites are successfully synthesized by using graphene oxide and silanized maghemite nanoparticles. Graphene oxide and maghemite were obtained by Hummers and Massart methods, respectively. The silanization process was done to functionalize maghemite surface with a controllable quantity of amino groups. Then, by adding aqueous graphene oxide suspension, the bonding between graphene oxide and silanized maghemite nanoparticles was done in refluxing conditions. Afterwards, chemical reduced graphene oxide reaction was realized by addition of hydrazine solution. The characterization of γ-Fe 2 O 3 @APTES@rGO composites was studied by X-ray Diffraction, Fourier Transformed Infrared Spectroscopy, thermogravimetric analysis and scanning electron microscopy.

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“…This Thermogravimetric Analysis (TGA): Consider (Table 2), in this study to identify the number of modifiers quantitatively, a TGA thermogram was used. This thermogram was illustrated in weight loss Curve (a) relates to Fe 3 O 4 , curve (b) associates to Fe 3 O 4 /APTES and curve (c) links to Fe 3 O 4 /APTES/Ga (TCPP) [46]. These data show that Fe 3 O 4 /APTES nanoparticles have been modified with metalloporphyrin successfully using a chemical bond.…”

Section: Characterization Of Nanomagnetsmentioning

confidence: 98%

“…Synthesis of Fe 3 O 4 nanoparticles: Co-precipitation is known to be one of the best methods for synthesis of Fe 3 O 4 nanoparticles, based on a study performed by Maity [45,46]. Using this method, 2 g FeCl 2 .4H 2 O and 5.2 g FeCl 3 .6H 2 O were used, with 25 mL deionized water added.…”

Section: Sorbent Preparationmentioning

confidence: 99%

Gallium (III)-Metalloporphyrin Grafted Magnetite Nanoparticles for Fluoride Removal from Aqueous Solutions

Asgari¹,

Bowen²

2017

Nat Prod Chem Res

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Fluoride is a critical micronutrient for human health and is usually ingested through food and drinking water. This technique has done in monitoring the concentration of fluoride in water complications at mining operation that it effects on the environment. Fe 3 O 4 nanoparticles were synthesized by coprecipitation of Fe 2+ and Fe 3+ in an alkaline solution, their surface was then modified with 3-aminopropyltriethoxysilane and a Ga(III) porphyrin complex, Ga(TCPP)Cl 2 [TCPP: tetrakis (4-carboxyphenyl) porphyrin]. The morphology and physical properties of these modified magnetic nanoparticles were examined by X-ray diffraction (XRD), Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA). The batch experiments showed that the nanoparticles could be used to remove fluoride ions from aqueous solution, achieving an extraction efficiency in excess of 96% for an initial fluoride concentration of 10 mg/L. This was obtained at pH 5.5 using 50 mg of modified nanoparticles and a contact time of 30 min.

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Development of zirconium (IV)-metalloporphyrin grafted Fe3O4 nanoparticles for efficient fluoride removal

Cited by 114 publications

References 90 publications

Selective sorption of U(VI) from aqueous solutions using a novel aminated Fe3O4@SiO2/PVA nanofiber adsorbent prepared by electrospinning method

Selective sorption of U(VI) from aqueous solutions using a novel aminated Fe3O4@SiO2/PVA nanofiber adsorbent prepared by electrospinning method

Synthesis of silanized maghemite nanoparticles onto reduced graphene sheets composites

Gallium (III)-Metalloporphyrin Grafted Magnetite Nanoparticles for Fluoride Removal from Aqueous Solutions

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