Advances in the Preparation of Magnetic Nanoparticles by the Microemulsion Method

Abstract

A method based on a microemulsion route is presented to obtain magnetic nanoparticles of different sizes, offering several advantages with respect to other similar methods. It consists basically of the development of a microemulsion route above room temperature. Magnetic iron oxide particles with sizes ranging from 2 to 8 nm are obtained. The as-obtained product presents defined X-ray diffraction patterns, without the complications of working in an inert atmosphere or with extra amounts of Fe 2+ , thereby eliminating the need for further steps in order to achieve good crystallization of the material.

Nanoparticles in cellular drug delivery

“…In particular, a water-in-oil microemulsion system with reverse micelles has been utilized extensively. [80][81][82] For maghemite (c-Fe 2 O 3 ) and magnetite (Fe 3 O 4 ) nanoparticles, this precipitation technique requires alkalization of a solution of metal salt with subsequent hydrolysis in microemulsions. Additionally, biosynthetic routes exist utilizing magnetic bacteria; the resulting nanoparticles typically range from 50 to 100 nm in diameter.…”

Superparaelectric phase in the ensemble of noninteracting ferroelectric nanoparticles

“…One can also expect the transformation of behavior into nonergodic one with dependence of polarization response on the regime of field application like it was observed for superparamagnetic phase. 22 On the other hand the behavior in the region T < T b is considered as "blocked superparamagnetizm" in Ref. [4].…”

Synthesis and antibacterial properties of Fe3O4-Ag nanostructures

“…Therefore multiple preparation methods of iron oxide (II)(III) was developed i.e. : precipitation 10 , solvothermal 11 , hydrothermal 12 , microemulsion 13 , thermal decomposition 12 , sol -gel method 14 , and liquid polyols 15 .…”