Amino-functionalized silica magnetite nanoparticles for the simultaneous removal of pollutants from aqueous solution

Araghi, Samira Hozhabr; Entezari, Mohammad Hassan

doi:10.1016/j.apsusc.2015.01.211

Cited by 113 publications

(26 citation statements)

References 40 publications

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“…The bands in 2954-2924 cm -1 region are associated with asymmetric stretching vibration of C-H from propyl group. Amino groups are identified by bands at 1636 and 1574 cm -1 from bending vibration and stretching vibration of -NH2 and -NH, respectively [14,30]. It can be concluded that the IR spectra support the success of coating EDTA modified silica on magnetic material.…”

Section: Fe3o4(s) + 8hcl(aq) → 2fecl3(aq) + Fecl2(aq) + 4h2o(l)mentioning

confidence: 97%

“…Silica is widely used as an adsorbent due to its excellent thermal and mechanical stability, easily dispersed in a liquid medium, it has large surface area and well-modified surface properties. In addition, this material contains silanol and siloxane groups on its surface which can be easily modified with various functional groups such as amino and thiol [13,14]. Previous researchers have used various functional groups to modify silica for adsorption of Au(III) such as (3-[3-(methoxycarbonyl)benzylidene]hydrazinyl) benzoic acid (MBHB) [15], 3-aminopropyltrimethoxysilane (APTMS) [13], 3-aminopropyl, N-[2-aminoethyl]-3-aminopropyl and 3-mercaptopropyl [10] and diethylenetriaminemethylenphosphonic acid [16].…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Fahmiati¹,

Nuryono²,

Suyanta³

2018

Asian J. Chem.

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Diethylenetriamine (DETA) functionalized silica coated on magnetic material of iron sand (MM@SiO2-DETA) has been synthesized by sol-gel method. Synthesis was carried out by coating magnetic material of iron sand as the core with diethylenetriamine-modified silica using sodium silicate solution and N 1 -(3-trimethoxysylilpropyl)diethylenetriamine (TMPSDETA) as silica and diethylenetriamine group sources, respectively. Several variations of mole ratio of silica to DETA at a constant weight of magnetic material were examined to evaluate the effect of the coating agent amount on the properties of MM@SiO2-DETA. MM@SiO2-DETA was characterized with Fourier transform infrared spectrophotometer, X-ray diffraction, scanning electron microscope with energy dispersive spectroscope (SEM-EDX), vibrating sample magnetometer and thermal gravimetric analysis. Stability test of product toward acidic solution and the effect of mole ratio of SiO2 and DETA on adsorption of Au(III) also evaluated. The characterization results indicated that SiO2 and DETA groups were successfully attached to the surface of magnetic material to form MM@SiO2-DETA. Characteristic bands of the vibration of propyl and amino groups derived from DETA; indicating that DETA was successfully reacted with MM@SiO2. Coating of magnetic material with SiO2 exhibits the decrease in Ms up to 38.2 emu/g and 23.5 emu/g after coating with SiO2-DETA. Thermalgravimetric analysis indicate thermal stability of the resulted product of MM@SiO2-DETA (1:1) up to 350 °C. Dissolution by acid solution can be diminished by coating magnetic material with silica. Gold(III) adsorption capacity of MM@SiO2-DETA (1:0.5), MM@SiO2-DETA (1:1) and MM@SiO2-DETA (1:2) are found to be higher than 92 %.

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Section: Fe3o4(s) + 8hcl(aq) → 2fecl3(aq) + Fecl2(aq) + 4h2o(l)mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Fahmiati¹,

Nuryono²,

Suyanta³

2018

Asian J. Chem.

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“…The procedure used for the synthesis of the ZnO NPs was the same method applied in our previous work [23]. The procedure in summary as follows: under the ultrasonic irradiation, 50 ml of 0.5 M The coating process of the ZnO NPs surface was carried out according to the method reported for the fabrication of the core-shell magnetic nanomaterial [24]. In this method, 0.…”

Section: Preparation Of the Zno@sio 2 Npsmentioning

confidence: 99%

“…On the other hand, the mass of the ZnO@SiO 2 NPs, which were collected carefully after electroplating, was 0.013 g. With regard to difference in the value of the initial and the • The hydroxyl groups on the surface of the ZnO and ZnO@SiO 2 NPs (these groups exist on the surface of the most oxides [24]) could interact with the charged species in the medium. The electrostatic interactions between the oxygen of the hydroxyl groups with the Ni 2+ ions control the free amount of the Ni 2+ ions.…”

Section: Evaluation Of the Amount Of The Loaded Core-shell Nanoparticmentioning

confidence: 99%

The new aspects of the anticorrosive ZnO@SiO 2 core–shell NPs in stabilizing of the electrolytic Ni bath and the Ni coating structure; electrochemical behavior of the resulting nano-composite coatings

Sharifalhoseini

Entezari

2015

Journal of Colloid and Interface Science

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“…In this framework, the entrapment of magnetic nanoparticles in biopolymer matrix has received considerable attention in recent years. Indeed, the use of magnetic adsorbents (called here magsorbents) is a promising way due to their easy and fast removal from water through the application of an external field [10][11][12]. Several efficient magnetic adsorbents have been reported in the literature but most of them are especially effective in the removal of cationic or anionic pollutants [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Influence of a cationic surfactant on adsorption of p-nitrophenol by a magsorbent based on magnetic alginate beads

Obeid

Kolli

Talbot

et al. 2015

Journal of Colloid and Interface Science

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The paper focuses on the removal of p-nitrophenol by an adsorption process. A magnetic adsorbent was synthesized by encapsulation of magnetic functionalized nanoparticles using alginate as a green biopolymer matrix. A cationic surfactant, cetylpyridinium chloride (CPyCl), was used to confer a hydrophobic character to the magnetic beads and thus to promote their adsorption efficiency. The effect of different parameters such as initial concentrations of both PNP and CPyCl, contact time and solution pH value on the adsorption of PNP in the presence of CPyCl was investigated. It should be noted that combination of magnetic and adsorption properties in a same material is an interesting challenge which could overcome the recovery problems of pollutant-loaded adsorbent. min whereas 90% adsorption was attained within 2 hours. It should be noted that combination of magnetic and adsorption properties in a same material is an interesting challenge which could overcome the recovery problems of pollutant-loaded adsorbent.

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Amino-functionalized silica magnetite nanoparticles for the simultaneous removal of pollutants from aqueous solution

Cited by 113 publications

References 40 publications

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

The new aspects of the anticorrosive ZnO@SiO 2 core–shell NPs in stabilizing of the electrolytic Ni bath and the Ni coating structure; electrochemical behavior of the resulting nano-composite coatings

Influence of a cationic surfactant on adsorption of p-nitrophenol by a magsorbent based on magnetic alginate beads

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