Fe3O4 and γ-Fe2O3 nanoparticles for the adsorption of Co2+ from aqueous solution

Uheida, Abdusalam; Salazar-Alvarez, Germán; Björkman, Eva; Zhang, Yu; Muhammed, Mamoun

doi:10.1016/j.jcis.2005.12.057

Cited by 134 publications

(80 citation statements)

References 20 publications

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“…A review of the actual existing literature highlights an optimal particle size range between 8-20 nm for adsorption applications. As it can be observed, the main nanoparticle size obtained by using the described synthesis method has an average size about 15-20 nm [28][29][30]. Energy Dispersive X-ray (EDX) analysis data (Fig.…”

Section: Characterization Of Adsorbent Materialsmentioning

confidence: 99%

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

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In the present work, superparamagnetic iron oxide nanoparticles (SPION) surface-coated with 3-mercaptopropanoic acid (3-MPA) were prepared and their feasibility for the removal of arsenate from dilute aqueous solutions was demonstrated. The synthesized 3-MPA-coated SPION was characterized using transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Fourier transform infra-red spectrometry (FTIR). Separation efficiency of the coated nanoparticles and the equilibrium isotherm of arsenate adsorption were investigated. The obtained results reveal the arsenate adsorption to be highly pH-dependent, and the maximum adsorption was attained in less than 60 minutes. The resulting increase of 3-MPA-coated SPION adsorption capacity to twice the adsorption capacity of SPION alone under the same conditions is attributed to the increase of active adsorption sites. An adsorption reaction is proposed. On the other hand, efficient recovery of arsenate from the loaded nanoparticles was achieved using nitric acid (HNO 3 ) solution, which also provides a concentration over the original arsenate solution. HIGHLIGHTS• Feasibility of using SPION modified with 3MPA for the removal of As(V).• The adsorbent system results in an effective sorption for selective As(V) removal.• The adsorption capacity for As(V) is higher comparing with other adsorbent systems.• Adsorption mechanism has been proposed as the most suitable considering the results.

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Section: Characterization Of Adsorbent Materialsmentioning

confidence: 99%

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

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“…Improving chemical reactivity is another significant effect of the large surface area of nanoparticles, which provides the possibility for chemical interactions with other chemical species that are available in the environment. There are other abilities for using of nanoparticles such as: adsorption and recovery of some ligands, dyes and ionic species, which are available in the literature [19][20][21][22][23][24]. The main specification of these nanosorbants, and one which can be considered as their main advantage, is their ability to recover nanoparticles using their external magnetic field.…”

Section: Introductionmentioning

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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“…6,7) In most chemical methods, however, hazardous chemicals or solvents are indispensable for the preparation of iron oxide particles. Ball milling is proposed as an alternative solvent-free method for the preparation of iron oxide particles but a surfactant is necessary for iron oxide nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Phases in Nanoparticles Produced by Electrical Wire Explosion on Arsenic(III) Removal

Song

Suh

et al. 2012

Mater. Trans.

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Nano-sized iron oxide particles were prepared by electrical wire explosion (EWE) for As(III) removal. The electrical explosion of Fe wire in Ar5%O 2 , Ar10%O 2 , and Ar30%O 2 produced a wide spectrum of ironoxide phases from wüstite to hematite depending on the oxygen partial pressure in the chamber. An increase in oxygen partial pressure tended to shift the iron oxides towards higher oxidation states. The major phase of the explosion product was verified as the magnetite (Fe 3 O 4 )maghemite (£-Fe 2 O 3 ) mixture through the step scan of (511) and (440) peaks. The As(III) removal capacity and saturation magnetization were found to be proportional to the amount of zero-valent iron (ZVI) in the particles. The As(III) adsorption capacity (q max , mg/g) calculated from the Langmuir isotherm was 19.7, 9.46, and 3.55 mg/g for particles synthesized in Ar5%O 2 , Ar10%O 2 , and Ar30%O 2 , respectively. The EWE process could be utilized to produce nano-sized adsorbent particles with a wide range of As(III) removal capability simply by varying the gas mixture. The eco-friendly nature of EWE process combined with the magnetic separation option would add to the list of the successful As(III) removal adsorbents.

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Fe3O4 and γ-Fe2O3 nanoparticles for the adsorption of Co2+ from aqueous solution

Cited by 134 publications

References 20 publications

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

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

The Effect of Phases in Nanoparticles Produced by Electrical Wire Explosion on Arsenic(III) Removal

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