scholarly journals Synthesis, Optical, Morphological and Magnetic Properties of Hematite Nanorods in Deep Eutectic Solvent with its Antibacterial and Photocatalytic Applications

2019 ◽  
Vol 31 (4) ◽  
pp. 879-885 ◽  
Author(s):  
Swathi Pon Sakthi Sri V. ◽  
A. Vijayakumar ◽  
Mary George
Keyword(s):  
Electron Microscopy ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Precipitation Method ◽  
Molar Ratio ◽  
Oxide Nanoparticles ◽  
Photocatalytic Activities ◽  
Co Precipitation

Deep eutectic solvent comprising of choline chloride and D(+)-glucose was synthesized by mixing in the molar ratio 2:1. Iron oxide nanoparticles were successfully synthesized by co-precipitation method. Deep eutectic solvent consisting of D(+)-glucose acts as a promising reducing agent for the synthesis of iron oxide nanoparticles. Direct optical band gap of iron oxide nanoparticles was found to be 2.262 eV. Powder X-ray diffraction technique was used to identify the crystalline phases. Surface morphology analysis by Field emission scanning electron microscopy and high resolution transmission electron microscopy confirmed the rod shape structure of the iron oxide nanoparticles. Selected area electron diffraction pattern revealed the identity of lattice planes with the XRD data. The antibacterial and photocatalytic activities of the iron oxide nanoparticles were also studied. The synthesized iron oxide nanoparticles showed appreciable antibacterial and photocatalytic activities

Ultra-Small Superparamagnetic Iron Oxide Nanoparticles as MRI Contrast Enhancing Agents

2008 ◽  
Vol 47-50 ◽  
pp. 1076-1079
Author(s):  
M.A. Do ◽  
H.J. Lee ◽  
J.H. Yeum ◽  
Y.M. Chang ◽  
H.D. Ghim ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Particle Size Analysis ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Precipitation Method ◽  
Size Analysis ◽  
Oxide Nanoparticles ◽  
Co Precipitation

Ultrasmall superparamagnetic iron oxide nanoparticles (USPION) as magnetic resonance imaging were synthesized through a sonochemical co-precipitation method with poly (ethyleneimine) (PEI). The size of the USPION was controlled by poly (ethyleneimine) (PEI) contents, ultrasonic exposure time, and Na4OH concentration. The characteristics of PEI-USPION were studied by X-ray diffractometry, magnetic property measurement system, scanning electron microscopy, transmission electron microscopy, and particle size analysis. The PEI-USPION had an average size of 5~10nm with a narrow size distribution, a perfect magnetite crystal structure, and high saturation magnetization.

Sonochemical Synthesis of Silica Coated Super Paramagnetic Iron Oxide Nanoparticles

2013 ◽  
Vol 756 ◽  
pp. 74-79 ◽  
Author(s):  
Bashiru Kayode Sodipo ◽  
Azlan Abdul Aziz
Keyword(s):  
Iron Oxide ◽  
Silica Nanoparticles ◽  
Iron Oxide Nanoparticles ◽  
Ph Value ◽  
Superparamagnetic Iron Oxide ◽  
Silica Nanoparticle ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Sonochemical Method ◽  
Co Precipitation

Superparamagnetic iron oxide nanoparticles (SPION) of sizes 5 to10 nm were synthesized by the co-precipitation method. They are coated with silica nanoparticles using sonication method. The SPION was produced under the optimum pH of 10, peptized in acidic medium and redispersed in water. The silica nanoparticles were produced through the Stöbermethod. Sonochemical coating of silica nanoparticle on the SPION was successfulat a pH value lower than 5. Otherwise, at higher pH value (but lower than point zero charge (PZC)), the SPION were found to be unstable. Fast hydrolysis of triethoxyvinylsilane(TEVS) shows that silica forms its own particles without coating onto the surfaces of the SPION. Under optimized experimental condition, sonochemical method of coating silica nanoparticles onto the SPION can be considered as an alternative for effective and prompt method that rely mainly on pH of the suspension.

Antibacterial efficacy of Ocimum sanctum leaf extract-treated iron oxide nanoparticles

2017 ◽  
Vol 41 (5) ◽  
pp. 2055-2061 ◽  
Author(s):  
Tokeer Ahmad ◽  
Ruby Phul ◽  
Nafeesa Khatoon ◽  
Meryam Sardar
Keyword(s):  
Antibacterial Activity ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Leaf Extract ◽  
Precipitation Method ◽  
Ocimum Sanctum ◽  
Oxide Nanoparticles ◽  
Antibacterial Efficacy ◽  
Co Precipitation

Iron oxide nanoparticles (IONPs) were preparedviaa co-precipitation method and were then characterized and evaluated for their antibacterial activity after modification withOcimum sanctumleaf extract.

ß-Amido Acid Functionalised Superparamagnetic Iron Oxide Nanoparticles as a Novel Carrier for Efficient Delivery of Doxorubicine

2017 ◽  
Vol 41 (3) ◽  
pp. 129-135
Author(s):  
Fatemeh Ebrahimi ◽  
Maryam Karimi ◽  
Hasan Sereshti ◽  
Mohsen Yousefifar
Keyword(s):  
Electron Microscopy ◽  
Drug Delivery ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Precipitation Method ◽  
Hydrodynamic Diameter ◽  
Oxide Nanoparticles ◽  
Amido Acid

Superparamagnetic iron oxide nanoparticles are increasingly used in medical applications due to their unique physical properties. They are useful carriers for delivering antitumour drugs in targeted cancer treatment. In this study, amido acid-functionalised magnetic nanoparticles (AAFMNs) are used as drug-delivery vehicles for doxorubicine as an efficient tool for the treatment of cancer. Magnetic iron oxide nanoparticles were synthesised using a co-precipitation method. The prepared iron oxide nanoparticles were then functionalised with amido acid functional groups. Finally, the synthesised AAFMNs were used for the delivery of doxorubicine. AAFMNs were characterised by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis and zeta potential. An in vitro-determined hydrodynamic diameter of ∼80 nm suggested their applicability for this purpose. The findings show that AAFMNs are a promising tool for potential magnetic drug delivery.

scholarly journals Synthesis and characterization of dextran-coated iron oxide nanoparticles

2018 ◽  
Vol 5 (3) ◽  
pp. 171525 ◽  
Author(s):  
Andra Mihaela Predescu ◽  
Ecaterina Matei ◽  
Andrei Constantin Berbecaru ◽  
Cristian Pantilimon ◽  
Claudia Drăgan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Quantum Interference ◽  
Synthesis And Characterization ◽  
Oxide Nanoparticles ◽  
Transmission Electron ◽  
Molar Weight ◽  
Co Precipitation

Synthesis and characterization of iron oxide nanoparticles coated with a large molar weight dextran for environmental applications are reported. The first experiments involved the synthesis of iron oxide nanoparticles which were coated with dextran at different concentrations. The synthesis was performed by a co-precipitation technique, while the coating of iron oxide nanoparticles was carried out in solution. The obtained nanoparticles were characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction spectrometry, Fourier transform infrared spectroscopy and superconducting quantum interference device magnetometry. The results demonstrated a successful coating of iron oxide nanoparticles with large molar weight dextran, of which agglomeration tendency depended on the amount of dextran in the coating solution. SEM and TEM observations have shown that the iron oxide nanoparticles are of about 7 nm in size.

Tuning the Magnetic Properties of Iron Oxide Nanoparticles by a Room-Temperature Air-Atmosphere (RTAA) Co-Precipitation Method

2015 ◽  
Vol 15 (5) ◽  
pp. 3870-3878 ◽  
Author(s):  
S. Vikram ◽  
M. Dhakshnamoorthy ◽  
R. Vasanthakumari ◽  
A. R. Rajamani ◽  
Murali Rangarajan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Room Temperature ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Air Atmosphere ◽  
Co Precipitation

Preparation, characterization and application of superparamagnetic iron oxide nanoparticles modified with natural polymers for removal of 60Co-radionuclides from aqueous solution

2017 ◽  
Vol 105 (2) ◽  
Author(s):  
Gehan E. Sharaf El-Deen ◽  
Neama G. Imam ◽  
Refaat R. Ayoub
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Natural Polymers ◽  
Ft Ir ◽  
Co Precipitation ◽  
Ft Ir Spectroscopy

AbstractSuperparamagnetic iron oxide nanoparticles (IO-MNPs) coated with natural polymers, starch (IO-S MNPs) and dextrin (IO-D MNPs), were synthesized by modified co-precipitation method. IO and hybrid-IO-MNPs were characterized by XRD, SEM, HRTEM, FT-IR spectroscopy, vibrating sample magnetometer (VSM) and zeta potential (ZP). IO-S MNPs and IO-D MNPs have IO core-shell structure with core of 10.8 nm and 13.8 nm and shell of 7.5 nm and 5.9 nm, respectively. The efficiency of the hybrid IO-MNPs for sorption of

Synthesis and magnetostructural studies of amine functionalized superparamagnetic iron oxide nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18420-18428 ◽  
Author(s):  
A. B. Salunkhe ◽  
V. M. Khot ◽  
J. M. Ruso ◽  
S. I. Patil
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Iron Ions ◽  
Amine Functionalized ◽  
Co Precipitation ◽  
New Generation

Superparamagnetic iron oxide nanoparticles are synthesized through the co precipitation method by using the new generation base diisopropylamine (DIPA) which electrostatically complexes with the iron ions, reduces them and subsequently caps the nanoparticles.

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