Ammonia‐in‐Oil‐Microemulsions and Their Application

Abstract

Liquid ammonia on the nanoscale: Ammonia-in-oil microemulsions are used to synthesize Bi, Re, CoN, and GaN nanoparticles, which can be obtained without further thermal treatment. These microemulsions are as reproducible and simple as their water-in-oil conterparts, with the exception of the required low temperature of -40 °C.

Toward surfactant-free and water-free microemulsions

“…It exists also an interest for studying such a structured non-aqueous solvent in a ternary system as a medium for nanoparticles synthesis when these nanoparticles are sensitive to water hydrolysis or oxidation [46]. However, this research belongs to another approach.…”

Colloidal and microemulsion synthesis of rhenium nanoparticles in aqueous medium

“…The MPA-capped Re nanoparticles prepared by this method were capable of catalyzing the isomerization of 10-undecen-1-ol to internal alkenols. Gyger et al [22] developed a synthesis procedure based on reverse micelles of liquid ammonia in oil. The polarity of the ammonia phase makes possible to use conventional inorganic Re precursors, although to achieve the formation of reverse micelles temperatures of −40 • C were required.…”

Nanoscale Iron Nitride, ε-Fe3N: Preparation from Liquid Ammonia and Magnetic Properties

“…[17][18][19][20] After reducing iron(II) bromide with an excess of potassium in liquid ammonia they described the formation of Fe 3 N. Recently, this solvent was used to produce nanoparticles of several transition metals (e.g. Bi, Re, Co, W) [21][22][23] and metal nitrides (e.g.CoN, GaN). 21 The reduction of titanium salts using a solution of sodium in liquid ammonia to produce titanium nitride nanoparticles has been shown.…”

“…Bi, Re, Co, W) [21][22][23] and metal nitrides (e.g.CoN, GaN). 21 The reduction of titanium salts using a solution of sodium in liquid ammonia to produce titanium nitride nanoparticles has been shown. 24 Now, nanoscale and pure e-Fe 3 N was obtained by annealing a precipitate obtained from FeBr 2 and sodium in liquid ammonia.…”