pH, molar ratio of ferrous to ferric ions and surfactant presence effects on physical properties of iron oxide nanoparticles generated by co-precipitation method

2020 ◽  
Vol 73 (24) ◽  
pp. 3452-3464
Author(s):  
H. R. Dehghanpour
Keyword(s):  
Iron Oxide ◽  
Physical Properties ◽  
Iron Oxide Nanoparticles ◽  
Precipitation Method ◽  
Molar Ratio ◽  
Oxide Nanoparticles ◽  
Ferric Ions ◽  
Co Precipitation

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

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.

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.

Investigation of Magnetic Iron Oxide Nanoparticle Properties with Co-Precipitation Methods under Different Reaction Conditions

2020 ◽  
Vol 10 ◽  
Author(s):  
Sema Salgın ◽  
Uğur Salgın ◽  
Nagihan Soyer
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Morphological Structure ◽  
Precipitation Method ◽  
Iron Oxide Nanoparticle ◽  
Hydrodynamic Diameter ◽  
Oxide Nanoparticles ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Magnetic Iron Oxide ◽  
Co Precipitation

: In this study, magnetic iron oxide nanoparticles were synthesized by cost effective and an easy co-precipitation method. The effects of reaction parameters such as the mole ratio of Fe2+/Fe3+ (1/1, 1/2 and 1/3) and the base type (NaOH and NH4OH) on the average hydrodynamic diameter, zeta potential, chemical and morphological structure and saturation magnetization values of magnetic iron oxide nanoparticles were systematically investigated. Magnetic iron oxide nanoparticles synthesized at the mole ratio of 1/2 using NH4OH base gave better results in terms of particle size and particle shape, magnetization value. In order to prevent the formation of different phases in the co-precipitation method, an alternative approach was developed and the reaction was performed using inert supercritical CO2 atmosphere.

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