Synthesis of magnetite-porphyrin nanocomposite and its application as a novel magnetic adsorbent for removing heavy cations

Bakhshayesh, Sara; Dehghani, Hossein

doi:10.1016/j.materresbull.2013.03.019

Cited by 21 publications

(8 citation statements)

References 46 publications

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“…The silica coating technique with the use of a magnet is an environmentally friendly technique because it does not result in contaminated products. This technique also accelerates the metal separating process from solution because the adsorbent has magnetic characteristics [35,36]. By using this technique, good outcomes will be obtained because the adsorbent has a large capacity and selectivity for target metal ions and the ability to quickly separate the target metal [37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Removal of Ni(II), Cu(II), and Zn(II) ions from aqueous solution using Tetraselmis sp. biomass modified with silica-coated magnetite nanoparticles

Buhani¹,

Rinawati²,

Suharso³

et al. 2017

Desalination and Water Treatment

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a b s t r a c tModification of algae-silica (AS) hybrid material from Tetraselmis sp. biomass (AS) was performed through a sol-gel simultaneous process and coated with Fe 3 O 4 magnetite nanoparticles (MNPs). Algae-silica hybrid material from Tetraselmis sp. biomass-coated MNPs (AS-MNPs) were used as adsorbents of heavy metal ions. The adsorption processes of Ni(II), Cu(II), and Zn(II) ions with AS and algae-silica-magnetite nanoparticles (AS-MNPs) fit pseudo-second-order kinetic models. The rate constant and adsorption capacity of Ni(II), Cu(II), and Zn(II) ions for AS-MNPs obtained from these experiments were higher than those of AS. AS-MNPs material is an effective adsorbent and can be used to absorb heavy metal ions in solution.

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Section: Introductionmentioning

confidence: 99%

Removal of Ni(II), Cu(II), and Zn(II) ions from aqueous solution using Tetraselmis sp. biomass modified with silica-coated magnetite nanoparticles

Buhani¹,

Rinawati²,

Suharso³

et al. 2017

Desalination and Water Treatment

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“…In the second step, silica-coated Fe 3 O 4 nanoparticles were added to the previous mixture in order to promote the chemical grafting of GaPFC previously functionalized with APTES. magnetite-silica core/shell nanoparticles [25,26] or via carbodiimide activation [27,28]. These hybrids were evaluated as antibacterial agents [26,29], as photocatalysts [30], as magnetic heavy metal ions adsorbents [27], and as adsorbents for polycyclic aromatic hydrocarbons from water samples [31].…”

Section: Resultsmentioning

confidence: 99%

Magnetite–Corrole Hybrid Nanoparticles

2018

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This study describes the first example of a hybrid material comprising corroleand silica-coated magnetite nanoparticles. Firstly, cuboid and spheroid magnetite nanoparticles were prepared using a simple hydrothermal route, followed by a silica coating. The hybrid nanoparticles were obtained by promoting a covalent link between a gallium (III)(pyridine) complex of 5,10,15-tris(pentafluorophenyl)corrole (GaPFC) and the surface of magnetite-silica core/shell nanoparticles (Fe 3 O 4 @SiO 2 ), shaped both as cuboids and spheroids. The hybrids were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-Vis) and transmission electron microscopy (TEM). Preliminary studies on the capacity of singlet oxygen generation of the hybrid nanoparticles showed that these have lower efficiency values when compared to the pure corrole compound.

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“…2 • Gahnite (ZnAl 2 O 4 ) as a catalyst is applied to degrade the gaseous toluene, 3 reform the ethanol steam, 4 and complete treatment of NO x. 10 • Zincochromite (ZnCr 2 O 4 ) is one of the chromium spinels with the humidity sensing performance, 11 photocatalytic behavior, 12 and magnetic properties. 10 • Zincochromite (ZnCr 2 O 4 ) is one of the chromium spinels with the humidity sensing performance, 11 photocatalytic behavior, 12 and magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

“…5 • Magnetite (Fe 3 O 4 ) is employed for biomedical applications, 6,7 water treatments 8,9 and magnetic adsorbent. 10 • Zincochromite (ZnCr 2 O 4 ) is one of the chromium spinels with the humidity sensing performance, 11 photocatalytic behavior, 12 and magnetic properties. 13,14 Various methods have been applied to synthesize ZnCr 2 O 4 and its composites, including mechanical mixing and heat treatment of ZnO-Cr 2 O 3 powder mixtures, 15 direct calcinations of ZnO-Cr 2 O 3 powder mixture, 16 thermal decomposition of Zn-Cr gel achieved from sol gel technique, 17 thin film fabrication by RF sputtering system, 18 etc.…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis of Al₂O₃‐supported ZnCr₂O₄ nanoparticles for application as an activated photocatalyst

Tajizadegan

Naghibi

Jamshidi

et al. 2016

Int J Applied Ceramic Tech

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Zincochromite nanoparticles (NPs) were precipitated on surfaces of the as‐prepared Al2O3 micron‐sized particles by a heterogeneous precipitation technique using urea as a homogeneous precipitation agent. This procedure leads to decrease the pore diameter and increase the pore volume and specific surface area (as), realizing the potential access to ZnCr2O4 catalytic sites. Although the obtained band gap energy (Eg) of Al2O3‐ZnCr2O4 composite is about 2.3 eV (more than ZnCr2O4), the absorbance is enhanced about 1.5 orders of magnitude. These characteristics make it an effective photocatalyst of inorganic dyes from an aqueous media. Dye removal performance of the nanocomposite powder is higher than that of pure ZnCr2O4, which is attributed to an increase in the photocatalytic sites and the absorbance intensity. It was believed that the surface area created from Al2O3 support realized the potential access to ZnCr2O4 catalytic sites. To confirm these assertions, X‐ray diffractometry (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), and N2 adsorption‐desorption analysis were applied.

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Synthesis of magnetite-porphyrin nanocomposite and its application as a novel magnetic adsorbent for removing heavy cations

Cited by 21 publications

References 46 publications

Removal of Ni(II), Cu(II), and Zn(II) ions from aqueous solution using Tetraselmis sp. biomass modified with silica-coated magnetite nanoparticles

Removal of Ni(II), Cu(II), and Zn(II) ions from aqueous solution using Tetraselmis sp. biomass modified with silica-coated magnetite nanoparticles

Magnetite–Corrole Hybrid Nanoparticles

In situ synthesis of Al₂O₃‐supported ZnCr₂O₄ nanoparticles for application as an activated photocatalyst

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Synthesis of magnetite-porphyrin nanocomposite and its application as a novel magnetic adsorbent for removing heavy cations

Cited by 21 publications

References 46 publications

Removal of Ni(II), Cu(II), and Zn(II) ions from aqueous solution using Tetraselmis sp. biomass modified with silica-coated magnetite nanoparticles

Removal of Ni(II), Cu(II), and Zn(II) ions from aqueous solution using Tetraselmis sp. biomass modified with silica-coated magnetite nanoparticles

Magnetite–Corrole Hybrid Nanoparticles

In situ synthesis of Al2O3‐supported ZnCr2O4 nanoparticles for application as an activated photocatalyst

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Product

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In situ synthesis of Al₂O₃‐supported ZnCr₂O₄ nanoparticles for application as an activated photocatalyst