Characterization and analytical application of surface modified magnetic nanoparticles

Jang, Jung-Geun; Lim, Heung Bin

doi:10.1016/j.microc.2009.10.011

Cited by 211 publications

(54 citation statements)

References 36 publications

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“…Fe +2 and Fe +3 salts precursors are mixed in solution with the addition of a weak base to cause precipitation of the nanoparticles to form a good crystalline phase. It is possible to control the form (size and homogeneity) and structure (morphology) to obtain different shapes (microspheres, nanospheres, nanorods and ferrofluids) and sizes for MNPs (Adachi et al, 2004;Young et al, 2008;Law et al, 2009;Jang et al, 2010;Barreto et al, 2011). This paper aims to report a synthesis of a novel magnetic nanosystem based in superparamagnetic nanoparticles of Fe3O4 and lipase B from Candida antarctica (CALB) and its evaluation in INH synthesis.…”

Section: Introductionmentioning

confidence: 99%

NANOBIOCATALYTIC SYSTEMS BASED ON LIPASE-Fe3O4 AND CONVENTIONAL SYSTEMS FOR ISONIAZID SYNTHESIS: A COMPARATIVE STUDY

Costa

Souza

Fechine

et al. 2016

Braz. J. Chem. Eng.

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-Superparamagnetic nanomaterials have attracted interest in many areas due to the high saturation magnetization and surface area. For enzyme immobilization, these properties favor the enzyme-support contact during the immobilization reaction and easy separation from the reaction mixture by use of low-cost magnetic processes. Iron oxide magnetic nanoparticles (Fe3O4, MNPs), produced by the co-precipitation method, functionalized with 3-aminopropyltriethoxysilane (APTES) and glutaraldehyde (GLU), were evaluated as a solid support for Candida antarctica lipase B (CALB) immobilization. The nanomagnetic derivative (11nm) obtained after CALB immobilization (MNPs/APTES/GLU/CALB) was evaluated as biocatalyst in isoniazide (INH) synthesis using ethyl isonicotinate (INE) and hydrazine hydrate (HID) as substrates, in 1,4-dioxane. The results showed that MNPs/APTES/CALB had a similar performance when compared to a commercial enzyme Novozym 435, showing significant advantages over other biocatalysts, such as Rhizhomucor miehei lipase (RML) and CALB immobilized on non-conventional, low-cost, chitosan-based supports.

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Section: Introductionmentioning

confidence: 99%

NANOBIOCATALYTIC SYSTEMS BASED ON LIPASE-Fe3O4 AND CONVENTIONAL SYSTEMS FOR ISONIAZID SYNTHESIS: A COMPARATIVE STUDY

Costa

Souza

Fechine

et al. 2016

Braz. J. Chem. Eng.

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“…/Fe 3? salt solutions in the presence of a base with a high yield and a relatively narrow size distribution [16,17]. The NPs which have a large ratio of surface area to volume tend to agglomerate in order to reduce their surface energy.…”

Section: Introductionmentioning

confidence: 99%

Silane modified magnetic nanoparticles as a novel adsorbent for determination of morphine at trace levels in human hair samples by high-performance liquid chromatography with diode array detection

Boojaria

Masrournia

Ghorbani

et al. 2015

Forensic Sci Med Pathol

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In this paper we report a novel, sensitive, and rapid method of magnetic solid phase extraction based on surface modified magnetic nanoparticles as a novel nano sorbent for HPLC determination of morphine with diode array detection in human hair samples. Factors affecting the extraction efficiency of the proposed method, including the sample pH, quantity of magnetic nanoparticles, sample volume, desorption solvent type and its volume, and extraction time were investigated and optimized. Under the optimized experimental conditions, a good linearity was observed in the range of 1-800 µgL(-1) for the morphine, with a correlation coefficient (R (2)) of 0.990. The pre-concentration factor of 208.69 was achieved in this method. The detection limit of the method was 0.1 μgL(-1) based on S/N = 3 and good reproducibility with a relative standard deviations lower than (n = 5) 2.59 %. The proposed method has been successfully applied to the analysis of trace amounts of morphine in human hair samples with satisfactory results. This method can be applied in medical toxicology research and forensic medical centers.

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“…It has potential to apply in various fields including separation and purification [30][31][32]. In the past few years, new composite materials based on magnetite nanoparticles in which these particles are encapsulated with organic polymers through monomer polymerization or coated with inorganic materials such as silica and titanium dioxides through a sol-gel approach have been widely utilized for extraction and separation of transition metal ions [23,[33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Magnetic nanoparticles with an imprinted polymer coating for the selective extraction of uranyl ions

Sadeghi

Aboobakri

2012

Microchim Acta

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We have synthesized ferromagnetic nanoparticles with an imprinted polymer coating that is capable of adsorbing and extracting uranyl ions. The adsorbent was characterized using infrared spectroscopy, elemental analysis, Xray powder diffraction analysis, and scanning electron microscopy. The effects of sample pH, sample volume, weight of the adsorbent, contact time and of other ions have been investigated in the batch extraction mode. The performance of the material was compared to that of particles coated with a non-imprinted polymer. The adsorbent containing the imprinted coating displays higher sorption capacity and better selectivity to uranyl ions. The method was successfully applied to the determination of uranyl ions in water samples.

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Characterization and analytical application of surface modified magnetic nanoparticles

Cited by 211 publications

References 36 publications

NANOBIOCATALYTIC SYSTEMS BASED ON LIPASE-Fe3O4 AND CONVENTIONAL SYSTEMS FOR ISONIAZID SYNTHESIS: A COMPARATIVE STUDY

NANOBIOCATALYTIC SYSTEMS BASED ON LIPASE-Fe3O4 AND CONVENTIONAL SYSTEMS FOR ISONIAZID SYNTHESIS: A COMPARATIVE STUDY

Silane modified magnetic nanoparticles as a novel adsorbent for determination of morphine at trace levels in human hair samples by high-performance liquid chromatography with diode array detection

Magnetic nanoparticles with an imprinted polymer coating for the selective extraction of uranyl ions

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