Fe3O4 magnetic nanoparticles (MNPs) were synthesized by a co-precipitation method using sodium citrate and oleic acid as modifiers. Phase composition and microstructure analysis indicate that the sodium citrate and oleic acid have been successfully grafted onto the surface of Fe3O4 MNPs.
What is Fe3O4 used for?
Among other industries, Iron oxide Fe3O4 nanoparticles are used as magnetic data storage, biosensors, drug-delivery, ferrofluids, magnetic coatings, EM-waves absorbing coatings, wastewater purification.
What are gold nanoparticles used for?
Gold nanoparticles are used in resonance scattering dark-field microscopy for the detection of microbial cells and their metabolites [37], the bio-imaging of tumor cells [38], and for the detection of receptors on their surface [39], and for the study of endocytosis [40].
Is Fe3O4 superparamagnetic?
The high magnetization value, negligible coercivity, and remanence measured by VSM indicate the superparamagnetic nature of both prepared NPs. The obtained results confirmed that the prepared Fe3O4 nanoparticles have suitable physicochemical and magnetic properties for biomedical applications.
How Fe3O4 is formed?
Fe3O4 is formed with the combination of FeO and Fe2O3 i.e. ferrous oxide and ferric oxide.
How is Fe3O4 prepared?
Fe3O4 nanoparticles were synthesized by chemical co-precipitation method have the diameter 5-20 nm and the saturation magnetic was 89.46 emu g-1, which indicated super paramagnetic properties. The nanoparticles Fe3O4 is suitable to remove dye in the water by a simple magnetic separation process.
What is Fe3O4 known as?
Iron Oxide (fe3o4)
What Colour are gold nanoparticles?
For small (~30 nm) monodisperse gold nanoparticles, the surface plasmon resonance phenomenon causes an absorption of light in the blue-green portion of the spectrum (~450 nm) while red light (~700 nm) is reflected, yielding a rich red color.
Are gold nanoparticles toxic?
Even though, it is generally accepted that plain gold nanoparticles are toxic both in vitro and in vivo in certain range of concentrations. With proper surface modifications the toxic effect can be reduced or even eliminated.
What oxide is Fe3O4?
Iron Oxide Black
| PubChem CID | 16211978 |
|---|---|
| Molecular Formula | Fe3O4 |
| Synonyms | Iron(II,III)oxide Iron Oxide Black 12227-89-3 oxoiron;oxo(oxoferriooxy)iron Fe3O4 More… |
| Molecular Weight | 231.53 |
| Component Compounds | CID 14945 (Ferrous oxide) CID 518696 (Iron(III) oxide) |
What kind of reaction is Fe3O4?
Schikorr reaction
Schikorr reaction – This reaction is to convert iron(II) hydroxide (Fe(OH)2) into iron(II,III) oxide (Fe3O4). Under anaerobic conditions, ferrous hydroxide (Fe(OH)2) undergoes oxidation with water to form magnetite and molecular hydrogen. This process is explained by the Schikorr reaction.
What can HRTEM tell us about core-shell au/fe3o4 nanoparticles?
This study reports on structural, morphological and magnetic properties of core-shell Au/Fe 3 O 4 NPs, where high resolution transmission electron microscopy (HRTEM) technique has been used to assess the crystalline structure, morphology, and particle size distribution.
How are au/fe3o4 csnps synthesized?
The Au/Fe 3 O 4 CSNPs reported in the present study were synthesized by the thermal decomposition method adapting a procedure described elsewhere 14, 20, 22 and based on the mixing of Fe (III) acetylacetonate and Au (III) acetate in the presence of capping molecules.
What is the morphology and crystal structure of the nanoparticles?
The morphology and crystal structure of the nanoparticles revealed the presence of Au core of d = (6.9 ± 1.0) nm surrounded by Fe 3 O 4 shell with a thickness of ~3.5 nm, epitaxially grown onto the Au core surface.
What is the inter-Fringe space of core-shell au/fe3o4 NPS?
The HRTEM images of core-shell Au/Fe 3 O 4 NPs were used to determine the inter-fringe space of the core and shell regions and the values we found matched the interplanar distances of the spinel structure of magnetite (space group Fd-3 m) and cubic structure of gold (space group Fm-3 m), respectively.
