Preparation and Characterization of CTAB-Coated Fe<sub>3</sub>O<sub>4</sub> Nanoparticles

Khoshnevisan, Kamyar; Barkhi, Mohammad; Zare, Davood; Davoodi, Daryoush; Tabatabaei, Meisam

doi:10.1080/15533174.2011.614997

Cited by 52 publications

(29 citation statements)

References 35 publications

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“…The peak at 1382 cm −1 is due to the C–N bond of CTAB. The peak around 1450 cm −1 is related to CH 2 scissoring vibrations and the peaks in the range of 2800–3000 cm −1 are due to CH 2 stretching vibrations of CTAB and these peaks are in accordance with the previous studies [14,27].…”

Section: Resultssupporting

confidence: 92%

“…Additionally, mono-coated nanoparticles can be further coated to improve their targeted task. Cetyltrimethyl ammonium bromide (CTAB) [14,15], one of the most common surfactants used in synthesis of iron oxide nanoparticles, can be strongly adsorbed onto the surface of iron oxide nanoparticles through its head group and thereby it forms micelles in aqueous solutions making the nanoparticles water soluble and monodispersed [13]. Polyethyleneimine (PEI) is a cationic polymer which can form strong ionic interactions with negatively charged phosphate backbone of DNA [3,16] and some of the proteins [17].…”

Section: Introductionmentioning

confidence: 99%

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Magnetofection and isolation of DNA using polyethyleneimine functionalized magnetic iron oxide nanoparticles

et al. 2018

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This study was carried out to develop a simple and efficient method to isolate DNA directly from biological samples using iron oxide nanoparticles (IONPs) functionalized with polyethyleneimine (PEI). IONPs were synthesized via co-precipitation method followed with direct attachment of branched PEI. Nanoparticles were characterized using STEM, FT-IR spectroscopy and XRD analysis. The binding capacity of synthesized PEI-IONPs for plasmid and genomic DNA was assessed using purified DNA samples. In order to elute bound DNA, elution conditions were optimized, changing pH, salt concentration and temperature. Synthesized PEI-IONPs were subjected to isolation of DNA from bacterial cell culture and from human blood. PCR and magnetofection of the enhanced green fluorescence protein (EGFP) were carried out to verify the downstream applications of isolated DNA. The results indicated that the synthesized nanoparticles were of 5–10 nm. The binding capacity of PEI-IONPs for plasmid DNA and genomic DNA were 5.4 and 8.4 µg mg−1, respectively, which were even higher than the commercially available kits such as Mag-bind, MagJET and Magmax. The optimized condition for plasmid DNA elution was 0.1 M Tris HCl (pH 10.0), 1.5 M NaCl and 5% formamide, maintained at the temperature of 60°C. The optimized condition for genomic DNA elution was 0.1 M Tris HCl (pH 10.0), 1.5 M NaCl and 10% formamide, maintained at 60°C. PCR and magnetofection processes were successful. This study revealed that the magnetic separation of DNA using PEI-IONPs is a simple and efficient method for direct isolation of DNA from biological samples which can be then used in various downstream applications.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Magnetofection and isolation of DNA using polyethyleneimine functionalized magnetic iron oxide nanoparticles

et al. 2018

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“…Similarly, a weak peak at 3494.3 cm −1 is because of –OH stretching attached to the Fe 3 O 4 surface and shows close resemblance to the already reported work [64]. Another weak band at 1734.7 cm −1 is assigned to residual NH 4 OH, as already reported elsewhere [65]. The peak at 554.8 cm −1 is due to stretching vibrations of Fe–O disappearing and a new peak at 539.5 cm −1 appearing, showing BB3 dye adsorbtion onto Fe 3 O 4 , as shown in Figure 3B.…”

Section: Resultssupporting

confidence: 88%

Basic Blue Dye Adsorption from Water Using Polyaniline/Magnetite (Fe3O4) Composites: Kinetic and Thermodynamic Aspects

et al. 2019

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Owing to its exciting physicochemical properties and doping–dedoping chemistry, polyaniline (PANI) has emerged as a potential adsorbent for removal of dyes and heavy metals from aqueous solution. Herein, we report on the synthesis of PANI composites with magnetic oxide (Fe3O4) for efficient removal of Basic Blue 3 (BB3) dye from aqueous solution. PANI, Fe3O4, and their composites were characterized with several techniques and subsequently applied for adsorption of BB3. Effect of contact time, initial concentration of dye, pH, and ionic strength on adsorption behavior were systematically investigated. The data obtained were fitted into Langmuir, Frundlich, Dubbanin-Rudiskavich (D-R), and Tempkin adsorption isotherm models for evaluation of adsorption parameters. Langmuir isotherm fits closely to the adsorption data with R2 values of 0.9788, 0.9849, and 0.9985 for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The maximum amount of dye adsorbed was 7.474, 47.977, and 78.13 mg/g for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The enhanced adsorption capability of the composites is attributed to increase in surface area and pore volume of the hybrid materials. The adsorption followed pseudo second order kinetics with R2 values of 0.873, 0.979, and 0.999 for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The activation energy, enthalpy, Gibbs free energy changes, and entropy changes were found to be 11.14, −32.84, −04.05, and −0.095 kJ/mol for Fe3O4, 11.97, −62.93, −07.78, and −0.18 kJ/mol for PANI and 09.94, −74.26, −10.63, and −0.210 kJ/mol for PANI/Fe3O4 respectively, which indicate the spontaneous and exothermic nature of the adsorption process.

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“…The most significant advantage of MNPs is related to their fast and facile separation by implementing an external magnetic field. In recent years several methods such as sonication, [1] reducing metallic salts, [2] UV irradiation, [3] solvothermal and hydrothermal synthesis, [4] chemical vapor deposition, [5] coprecipitation, [6] and impregnation method [7] are used to synthesis MNPs for application in several fields such as cell isolation, [8,9] targeted drug delivery, [10,11] protein and enzyme immobilization, [12,13] immunoassays, [14] and environmental and food analyses. [15][16][17] Among the various synthesis methods, the hydrothermal method is one of the most useful synthetic procedures and has attracted much attention due to simplicity and response quality.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis and Size Control of Fe₃O₄ Nanoparticles in the Presence of 2,2’,2”,2”′-(ethane-1,2-diylbis(azanetriyl))tetraacetohydrazide

Nemati

Shadpour

Khalafbeygi

et al. 2014

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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The synthesis and characterization of magnetite nanoparticles in the presence of 2,2 ,2 ,2 -(ethane-1,2-diylbis(azanetriyl)) tetraacetohydrazide as reducing agent in hydrothermal reaction were performed. Fe 3 O 4 nanoparticles with a diameter range 15-21 nm were achieved. The formation of pure Fe 3 O 4 nanoparticles was confirmed by XRD patterns and electron dispersive X-ray (EDX) analysis. The morphology of particles was characterized by scanning electron microscopy (SEM). The effects of reactants ratio, reducing agent and precursor, reaction temperature, and process time are described. It was found that the different reaction conditions such as ligand concentration, reaction temperature, and process time had little effect on the size of the synthesized nanoparticles.

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Preparation and Characterization of CTAB-Coated Fe₃O₄ Nanoparticles

Cited by 52 publications

References 35 publications

Magnetofection and isolation of DNA using polyethyleneimine functionalized magnetic iron oxide nanoparticles

Magnetofection and isolation of DNA using polyethyleneimine functionalized magnetic iron oxide nanoparticles

Basic Blue Dye Adsorption from Water Using Polyaniline/Magnetite (Fe3O4) Composites: Kinetic and Thermodynamic Aspects

Hydrothermal Synthesis and Size Control of Fe₃O₄ Nanoparticles in the Presence of 2,2’,2”,2”′-(ethane-1,2-diylbis(azanetriyl))tetraacetohydrazide

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Preparation and Characterization of CTAB-Coated Fe3O4 Nanoparticles

Cited by 52 publications

References 35 publications

Magnetofection and isolation of DNA using polyethyleneimine functionalized magnetic iron oxide nanoparticles

Magnetofection and isolation of DNA using polyethyleneimine functionalized magnetic iron oxide nanoparticles

Basic Blue Dye Adsorption from Water Using Polyaniline/Magnetite (Fe3O4) Composites: Kinetic and Thermodynamic Aspects

Hydrothermal Synthesis and Size Control of Fe3O4 Nanoparticles in the Presence of 2,2’,2”,2”′-(ethane-1,2-diylbis(azanetriyl))tetraacetohydrazide

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Preparation and Characterization of CTAB-Coated Fe₃O₄ Nanoparticles

Hydrothermal Synthesis and Size Control of Fe₃O₄ Nanoparticles in the Presence of 2,2’,2”,2”′-(ethane-1,2-diylbis(azanetriyl))tetraacetohydrazide