scholarly journals Surface analysis of magnetite nanoparticles in cyclohexane solutions of oleic acid and oleylamine

2007 ◽  
Vol 43 (1) ◽  
pp. 243-248 ◽  
Author(s):  
M. Klokkenburg ◽  
J. Hilhorst ◽  
B.H. Erné
Keyword(s):  
Oleic Acid ◽  
Surface Analysis ◽  
Magnetite Nanoparticles

scholarly journals High Encapsulation Efficiency of Magnetite Nanoparticles in Hydrophobic Polymer Microcapsules using Microsuspension Conventional Radical Polymerization

2019 ◽  
Vol 35 (2) ◽  
pp. 516-522 ◽  
Author(s):  
Jittaya Sadchaiyaphum ◽  
Pongsathon Phapugrangkul ◽  
Preeyporn Chaiyasat ◽  
Amorn Chaiyasat
Keyword(s):  
Aqueous Solution ◽  
Oleic Acid ◽  
Radical Polymerization ◽  
Magnetite Nanoparticles ◽  
Driving Force ◽  
Encapsulation Efficiency ◽  
Polymer Particle ◽  
Polymer Shell ◽  
Hydrophobic Polymer ◽  
Co Precipitation

High encapsulation efficiency of magnetite nanoparticles (MNPs; Fe3O4) in microcapsules using PDVB as a hydrophobic polymer shell was successfully achieved by microsuspension conventional radical polymerization (ms CRP). MNPs were initially synthesized by co-precipitation of Fe2+/Fe3+ in a binary phase. During the nucleation of MNPs in alkaline aqueous solution existing oleic acid (OA), MNPs were coated with OA (MNPs-OA) before moving to the toluene phase with the addition of salt. At OA concentration of 0.3 wt%, most of the nucleated MNPs were hydrophobic and well dispersed in the toluene phase. Using DVB as a monomer for ms CRP, high encapsulation efficiency (92 %EE) of MNPs-OA was obtained, with low free polymer particle formation. By contrast, large amounts of free polymer particles were observed at low %EE (32%) of MNPs. The main driving force for high %EE was obtained by coating the surface of the MNPs by OA which increased hydrophobicity.

Demulsification of Oleic-Acid-Coated Magnetite Nanoparticles for Cyclohexane-in-Water Nanoemulsions

2014 ◽  
Vol 28 (9) ◽  
pp. 6172-6178 ◽  
Author(s):  
Jiling Liang ◽  
Haiping Li ◽  
Jingen Yan ◽  
Wanguo Hou
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles

scholarly journals Synthesis of functionalized magnetite nanoparticles using only oleic acid and iron (III) acetylacetonate

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Eupídio Scopel ◽  
Patrick Pires Conti ◽  
Daniel Grando Stroppa ◽  
Cleocir José Dalmaschio
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles

Magnetite nanoparticles coated with oleic acid: accumulation in hepatopancreatic cells of the mangrove crab Ucides cordatus

2018 ◽  
Vol 25 (35) ◽  
pp. 35672-35681
Author(s):  
Hector Aguilar Vitorino ◽  
Priscila Ortega ◽  
Roxana Y. Pastrana Alta ◽  
Flavia Pinheiro Zanotto ◽  
Breno Pannia Espósito
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles ◽  
Ucides Cordatus ◽  
Mangrove Crab ◽  
Acid Accumulation

A facile green approach for synthesizing monodisperse magnetite nanoparticles

2010 ◽  
Vol 25 (5) ◽  
pp. 810-813 ◽  
Author(s):  
Ling Li ◽  
Jun Ding ◽  
Junmin Xue
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles ◽  
Synthetic Methods ◽  
Capping Agent ◽  
High Quality ◽  
Green Approach ◽  
Surfactant Complex ◽  
Acid Ratio ◽  
Size And Morphology ◽  
Controllable Size

The synthesis of monodisperse magnetite nanoparticles (Fe3O4 NPs) has been widely investigated over the last decade. Among the various synthetic methods, thermal decomposition of iron acetylacetonate, Fe(acac)3, or the premade iron-surfactant complex, was demonstrated to be promising to obtain monodisperse Fe3O4 NPs with controllable size and morphology. However, toxic and expensive precursors or tedious experimental procedures are normally required in these approaches. In this communication, we report a facile chemical top-down method to synthesize monodisperse magnetite NPs by using rust, which is mainly composed of γ-Fe2O3, as the iron source and oleic acid as the capping agent. The particle size, and hence the magnetization, of NPs can be readily controlled by adjusting the rust/oleic acid ratio and reaction temperature. This process is a green chemical approach and is easy to be reproduced and scaled up, which could be developed as an effective way to convert waste materials into high quality nanocrystals.

Oleic acid coating on the monodisperse magnetite nanoparticles

2006 ◽  
Vol 253 (5) ◽  
pp. 2611-2617 ◽  
Author(s):  
Ling Zhang ◽  
Rong He ◽  
Hong-Chen Gu
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles ◽  
Acid Coating

scholarly journals Synthesis of Magnetite Nanoparticles by Top-Down Approach from a High Purity Ore

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Gayan Priyadarshana ◽  
Nilwala Kottegoda ◽  
Atula Senaratne ◽  
Ajith de Alwis ◽  
Veranja Karunaratne
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles ◽  
High Purity ◽  
Magnetic Domain ◽  
Analysis Data ◽  
X Ray Diffraction ◽  
Top Down ◽  
Coated Nanoparticles ◽  
Natural Iron ◽  
Surface Modified

This study attempts to synthesize magnetite nanoparticles from a high purity natural iron oxide ore found in Panvila, Sri Lanka, following a novel top-down approach. Powder X-Ray diffraction, elemental analysis, and chemical analysis data confirmed the ore to be exclusively magnetite with Fe2+ : Fe3+ratio of 1 : 2. Surface modified magnetite nanoparticles were synthesized by destructuring of this ore using a top-down approach in the presence of oleic acid. These oleic acid coated nanoparticles were further dispersed in ethanol resulting in stable nanomagnetite dispersion. Interestingly, the nanoparticles demonstrated a spherical morphology with a particle size ranging from 20 to 50 nm. Magnetic force microscopic data was used to confirm the topography of the nanoparticles and to study the magnetic domain structure.

Development of oleic acid-functionalized magnetite nanoparticles as hydrophobic probes for concentrating peptides with MALDI-TOF-MS analysis

PROTEOMICS ◽  
2011 ◽  
Vol 11 (5) ◽  
pp. 890-897 ◽  
Author(s):  
Hemei Chen ◽  
Shasha Liu ◽  
Yan Li ◽  
Chunhui Deng ◽  
Xiangmin Zhang ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Ms Analysis ◽  
Tof Ms

scholarly journals Comet assay assessment of oleic acid-coated magnetite nanoparticles on human SHSY5Y neuronal cells

2015 ◽  
Vol 6 ◽  
Author(s):  
Teixeira Joao ◽  
Laffon Blanca ◽  
Kiliç Gözde ◽  
Fernández-Bertólez Natalia ◽  
Costa Carla ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Comet Assay ◽  
Magnetite Nanoparticles ◽  
Neuronal Cells
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