Reverse Microemulsions as a Novel Reaction Media
نویسنده
چکیده
Microemulsions are psuedohomogeneous mixtures which may show special performance towards reaction equilibria, nanoscale synthesis and reaction dynamics. Rate of reaction are most often accelerated in microemulsion media compared to that in water. This study is an effort to review some important reaction kinetics measured in reverse micro emulsion media. In the same time some pioneering research works concerned with the synthesis of nanoscale material in inverted (w/o) microemulsion have also been reviewed.
منابع مشابه
Fluorinated microemulsions as reaction media for fluorous nanoparticles†
New fluorinated microemulsions (F-MEs) formulated from partially fluorinated solvent–co-solvent mixtures and fluorinated anionic AOT-analogue surfactants are reported. These F-MEs permit incorporation of water into fluorinated solvents, up to a volume fraction fwater z 0.13. Interestingly, phase behavior and structures, determined by small-angle neutron scattering (SANS), parallel many other cl...
متن کاملA Novel Method for the Preparation of Silver Halide Nanoparticles from Their Bulk Solid Using Microemulsions
Nanoparticles of silver halides are widely used to study the quantum confinement effects in indirect band gap semiconductors [1]. These particles are typically prepared by carrying out a precipitation reaction in the water pools of w/o microemulsions, or reverse micelles, by mixing two identical microemulsions containing aqueous solutions of AgNO3 and KBr, or other halides [2]. The mixing of tw...
متن کاملSynthesis of Materials within Reverse Micelles
Reverse micelles as nanosized aqueous droplets existing at certain compositions of water-in-oil microemulsions are widely used today in the synthesis of many types of nanoparticles. However, without a rich conceptual network that would correlate the properties and compositions of reverse micellar microemulsions to the properties of to-be-obtained particles, the design procedures in these cases ...
متن کاملThe impact of the confinement of reactants on the metal distribution in bimetallic nanoparticles synthesized in reverse micelles
A kinetic study on the formation of bimetallic nanoparticles in microemulsions was carried out by computer simulation. A comprehensive analysis of the resulting nanostructures was performed regarding the influence of intermicellar exchange on reactivity. The objects of this study were metals having a difference in standard reduction potential of about 0.2-0.3 V. Relatively flexible microemulsio...
متن کاملIonic Liquid-Based Microemulsions in Catalysis
The design and properties of surface-active ionic liquids that are able to form stable microemulsions with heptane and water are presented, and their promise as reaction media for thermomorphic palladium-catalyzed cross-coupling reactions is demonstrated.
متن کامل