Manganese Ferrite (MnFe2O4) Nanoparticles: From Synthesis to Application -A Review

2021 ◽  
Author(s):  
Neda Akhlaghi ◽  
Ghasem Najafpour-Darzi
Keyword(s):  
Manganese Ferrite ◽  
Mnfe2o4 Nanoparticles

scholarly journals Synthesis, Characterization and in Vitro Evaluation of Manganese Ferrite (MnFe2O4) Nanoparticles for Their Biocompatibility with Murine Breast Cancer Cells (4T1)

Molecules ◽  
2016 ◽  
Vol 21 (3) ◽  
pp. 312 ◽  
Author(s):  
Samikannu kanagesan ◽  
Sidek Aziz ◽  
Mansor Hashim ◽  
Ismayadi Ismail ◽  
Subramani Tamilselvan ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Manganese Ferrite ◽  
In Vitro Evaluation ◽  
Mnfe2o4 Nanoparticles

scholarly journals Manganese Ferrite Nanoparticles (MnFe2O4): Size Dependence for Hyperthermia and Negative/Positive Contrast Enhancement in MRI

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2297
Author(s):  
Khairul Islam ◽  
Manjurul Haque ◽  
Arup Kumar ◽  
Amitra Hoq ◽  
Fahmeed Hyder ◽  
...  
Keyword(s):  
Colloidal Suspension ◽  
Positive Contrast ◽  
Structural Features ◽  
Maximum Temperature ◽  
Manganese Ferrite ◽  
Field Exposure ◽  
Co Precipitation ◽  
Mnfe2o4 Nanoparticles

We synthesized manganese ferrite (MnFe2O4) nanoparticles of different sizes by varying pH during chemical co-precipitation procedure and modified their surfaces with polysaccharide chitosan (CS) to investigate characteristics of hyperthermia and magnetic resonance imaging (MRI). Structural features were analyzed by X-ray diffraction (XRD), high-resolution transmission electron microscopy (TEM), selected area diffraction (SAED) patterns, and Mössbauer spectroscopy to confirm the formation of superparamagnetic MnFe2O4 nanoparticles with a size range of 5–15 nm for pH of 9–12. The hydrodynamic sizes of nanoparticles were less than 250 nm with a polydispersity index of 0.3, whereas the zeta potentials were higher than 30 mV to ensure electrostatic repulsion for stable colloidal suspension. MRI properties at 7T demonstrated that transverse relaxation (T2) doubled as the size of CS-coated MnFe2O4 nanoparticles tripled in vitro. However, longitudinal relaxation (T1) was strongest for the smallest CS-coated MnFe2O4 nanoparticles, as revealed by in vivo positive contrast MRI angiography. Cytotoxicity assay on HeLa cells showed CS-coated MnFe2O4 nanoparticles is viable regardless of ambient pH, whereas hyperthermia studies revealed that both the maximum temperature and specific loss power obtained by alternating magnetic field exposure depended on nanoparticle size and concentration. Overall, these results reveal the exciting potential of CS-coated MnFe2O4 nanoparticles in MRI and hyperthermia studies for biomedical research.

scholarly journals Manganese ferrite graphene nanocomposite synthesis and the investigation of its antibacterial properties for water treatment purposes

2020 ◽  
Vol 15 (4) ◽  
pp. 1
Author(s):  
Lara De Souza Soletti ◽  
Maria Eliana Camargo Ferreira ◽  
Alex Toshio Kassada ◽  
Benício Alves de Abreu Filho ◽  
Rosangela Bergamasco ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Antibacterial Activity ◽  
Water Treatment ◽  
Graphene Nanosheets ◽  
Antibacterial Properties ◽  
Morphological Characteristics ◽  
Manganese Ferrite ◽  
Transmission Electron ◽  
Cutting Effect ◽  
Mnfe2o4 Nanoparticles

The main objective of this study was to synthesize a nanocomposite using graphene and manganese ferrite nanoparticles (MnFe2O4-G) and to evaluate its antibacterial activity for water treatment purposes. Its morphological characteristics were evaluated by instrumental techniques, such as scanning electron microscopy and transmission electron microscopy. The characterization results indicated that the nanocomposite presented nanoparticles of approximately 25 nm well dispersed in transparent and large (14 μm) graphene nanosheets. The antibacterial activity was evaluated in a batch experiment using a concentration of 40 μg mL-1 of nanocomposite (MnFe2O4-G, bare MnFe2O4 nanoparticles or graphene oxide), 1x105 CFU mL-1 of Escherichia coli, and 8 h of contact time at room temperature. The highest antibacterial capacity was observed for the hybrid nanocomposite (91.91%), due to the synergic effect of graphene and MnFe2O4 nanoparticles. Various mechanisms were proposed to explain the effective antibacterial activity of MnFe2O4-G, such as wrapping, oxidative stress, sharp-edge cutting effect, among others. The results showed that MnFe2O4-G is a potential alternative in water treatment processes as an antibacterial agent.

Synthesis of Spiro1,4–Dihydropyridines: A Review

2020 ◽  
Vol 17 (5) ◽  
pp. 324-343
Author(s):  
Zahra Sadri ◽  
Farahnaz K. Behbahani
Keyword(s):  
Lewis Acids ◽  
Sulfamic Acid ◽  
Ferrite Nanoparticles ◽  
Tetracarboxylic Acid ◽  
Manganese Ferrite ◽  
Microwave Assisted ◽  
Peg 400 ◽  
Solvent Free Conditions ◽  
Alkaline Conditions ◽  
Mnfe2o4 Nanoparticles

The preparation of medicinally promising spiro1,4–dihydropyridines accompanied by their applications in biological and pharmaceutical activities is presented. Spiro1,4–dihydropyridines were synthesized using numerous reported methods including bronested acids such as p-TSA, AcOH, nano-ranged calix[4]arene tetracarboxylic acid, sulfamic acid, PEG-OSO3H, tetramethylguanidinium triflate; lewis acids including Zn(OTf)2, FeCl3, copper, alum, aluminosilicate nanoparticles, MnFe2O4 nanoparticles, manganese ferrite nanoparticles, BF3OEt2; under alkaline conditions such as Et3N and piperidine; ionic liquids such as [KAl(SO4)2·12H2O] and [Bmim]PF6, [MIM(CH2)4SO3H][HSO4]; and other miscellaneous procedures, for example, microwave-assisted catalyst and solvent-free conditions, using iodine, PEG-400, and NaCl.

scholarly journals Synergetic Effect of Calcium Doping on Catalytic Activity of Manganese Ferrite: DFT Study and Oxidation of Hydrocarbon

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 335
Author(s):  
Zahoor Iqbal ◽  
Saima Sadiq ◽  
Muhammad Sadiq ◽  
Muhammad Ali ◽  
Khalid Saeed ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Synergetic Effect ◽  
Dft Study ◽  
Molar Ratio ◽  
Thermally Stable ◽  
Manganese Ferrite ◽  
Oxidation Of Hydrocarbons ◽  
Calcium Doped ◽  
Calcium Doping ◽  
Mnfe2o4 Nanoparticles

Manganese ferrite (MnFe2O4) and calcium-doped manganese ferrite (Ca-MnFe2O4) were synthesized, characterized, and tested for oxidation of hydrocarbons (CH) in a self-designed gas blow rotating (GBR) reactor. The uniformly sized and thermally stable MnFe2O4 nanoparticles (molar ratio, 1/284.5) showed a reasonable catalytic activity (productivity: 366.17 mmolg−1h−1) with 60% selectivity at 80 °C, which was further enhanced by calcium doping (productivity: 379.38 mmolg−1h−1). The suspicious behavior of Ca-MnFe2O4 was disclosed experimentally and theoretically as well.

scholarly journals Synthesis and Characterization of Electrochemical Properties of Manganese Ferrite Nanoparticles (\ce {MnFe2O4}) from Iron

2019 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
Sadang Husain ◽  
Muhammad Irfansyah ◽  
Agus Riyanto ◽  
Sugianto Arjo
Keyword(s):  
Electrochemical Properties ◽  
Glucose Oxidase ◽  
Iron Ore ◽  
Ferrite Nanoparticles ◽  
Electrochemical Characterization ◽  
Precipitation Method ◽  
Synthesis And Characterization ◽  
Manganese Ferrite ◽  
Mnfe2o4 Nanoparticles

Synthesis and characterization of the electrochemical properties of manganese ferrite nanoparticles (\ce {MnFe2O4}) from iron ore have been done. The aim of this research was to determine the potential of iron ore as a source for the manufacture of \ce {MnFe2O4} and to know electrochemical characterization. The precipitation method was used in this research. Iron ore samples were taken from Tanah Laut Regency, South Kalimantan, Indonesia. The sample of iron ore was purified first to synthesis MnFe2O4 nanoparticle. Manganese salt \ce {MnCl2} is used as a source of manganese. Characterization of samples use TEM and potentiostat. Glucose oxidase (GOD) is used as a sample to be given electrochemical properties of the sample. The GOD concentration used is 0.2; 0.4; 0.6; and 0.8 ppm. The range of \ce {MnFe2O4} nanoparticles was successfully made with sample diameters ranging from 1.5 to 12.5 nm. The current values ​​obtained on \ce {MnFe2O4} nanoparticles range from $0.226 - 0.322$ mA. The sensitivity of \ce {MnFe2O4} nanoparticles is around 0.16 mA/ppm. The higher the concentration used, the greater the current produced.

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