Synthesis of magnetite nanoparticles in the presence of aminoacids

Marinescu, Gabriela; Patron, Luminiţa; Culiță, Daniela C.; Neagoe, Cristian; Lepădatu, Costinel; Balint, Ioan; Bessaïs, L.; Cizmas, C.B.

doi:10.1007/s11051-006-9134-1

Cited by 63 publications

(30 citation statements)

References 34 publications

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“…One of the effective approaches for preventing particle agglomeration is to coat nanoparticles with polymers or other targeting agents, taking into account their biocompatibility. Among the chemicals which may be used towards achieving this aim, aminoacids are suitable because they play a very important role in the body [8]. Aminoacids are very desirable chemicals as ligands anchored with magnetic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

l-Histidine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization

Ünal

Durmuș

Baykal

et al. 2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

l-Histidine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization

Ünal

Durmuș

Baykal

et al. 2010

Journal of Alloys and Compounds

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“…Therapy with amino acid imbalance or with amino acids as a dose of nutrients has been widely used to treat cancer sufferers because some amino acids reduced tumor cells. Excess of amino acid, would lead to the tumor cell shrinking or even dying out [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

l-lysine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization

Durmuș

Kavas

Toprak

et al. 2009

Journal of Alloys and Compounds

134

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a b s t r a c t l-lysine coated iron oxide (LCIO) nanoparticles were synthesized by a co-precipitation method in the presence of amino acid. XRD analysis confirmed the presence of cubic magnetite phase with an average crystallite size of 8 ± 4 nm. Particle size estimated from TEM, by log-normal fitting, is ∼114 nm. The difference between the crystallite size from XRD and particle size from TEM indicates polycrystalline nature of synthesized particles. FT-IR show that the binding of l-lysine on the surface of iron oxide through carboxyl groups is via unidentate linkage. The presence of l-lysine on iron oxide is also confirmed by zeta potential measurements on LCIO nanoparticles, revealing a partial coverage of iron oxide with l-lysine. In order to obtain chemically stable, well-dispersed and uniform sized nanoparticles, amino acids are suitable because they play a very important role in the body. Conductivity measurements were performed to investigate the influence of the coating on the conduction characteristics of iron oxide and results show the existence of a hopping conduction mechanism. Magnetic transition is observed at ∼70 • C for uncoated iron oxide and LCIO samples. Frequency (1 Hz to 3 MHz) and temperature (290-420 K) dependant AC conductivity measurements have resulted in AC activation energies between 0.048 and 0.041 eV for uncoated and 0.050-0.044 eV for LCIO nanoparticles. Temperature-dependant DC resistivity measurements of iron oxide and LCIO at high temperatures resulted in the DC activation energies of 0.22 and 0.43 eV respectively. The higher activation energy value for LCIO is the result of coating by insulating l-lysine layer.

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“…A way to control the self-assembly and the physical properties of the synthesized nanoparticles consisted in the correlation with descriptors representing the aminoacid chemical structures. A relationship between the used aminoacids and the properties of magnetite NPS was found (magnetization, size, magnetite core diameter and the magnetite at each nanoparticle core) [76,77].…”

Section: Synthesis Of Functionalized Nanosized Magnetitementioning

confidence: 97%

Nanosized magnetite in low cost materials for remediation of water polluted with toxic metals, azo- and antraquinonic dyes

Horst

Lassalle

Ferreira

2015

Front. Environ. Sci. Eng.

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Nanosized magnetite has emerged as an adsorbent of pollutants in water remediation. Nanoadsorbents include magnetic iron oxide and its modifiers/ stabilizers, such as carbon, silica, clay, organic moieties (polymers, aminoacids, and fatty acids) and other inorganic oxides. This review is focused on the recent developments on the synthesis and use of magnetic nanoparticles and nanocomposites in the treatment of contaminated water. The emphasis is on the influence of the iron oxide modifiers on some properties of interest such as size, BET area, and magnetization. The characteristics of these nanomaterials are related to their ability to eliminate heavy metal ions and dyes from wastewater. Comparative analysis of the actual literature was performed aiming to present the magnetic material, its preparation methodology and performance in the elimination of the selected pollutants. Vast information has been properly summarized according to the materials, their properties and preferential affinity for selected contaminants. The mechanisms governing nanomaterial's formation as well as the interactions with heavy metals and dyes have been carefully analyzed and associated to their efficiency.

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Synthesis of magnetite nanoparticles in the presence of aminoacids

Cited by 63 publications

References 34 publications

l-Histidine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization

l-Histidine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization

l-lysine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization

Nanosized magnetite in low cost materials for remediation of water polluted with toxic metals, azo- and antraquinonic dyes

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