An approach towards the synthesis and characterization of ZnO@Ag core@shell nanoparticles in water-in-oil microemulsion

Abstract

Water-in-oil microemulsions have been found to be good templates for synthesis of ZnO and ZnO@Ag nanoparticles and offered themselves as ideal ‘nanoreactors’ for uniform fabrication of core@shell nanoparticles.

Band gap-engineered ZnO and Ag/ZnO by ball-milling method and their photocatalytic and Fenton-like photocatalytic activities

“…The much smaller particles were attributed to the hybridized Ag particles. The elemental composition distribution of M a n u s c r i p t 6 Ag on ZnO was investigated further by TEM elemental (Zn, O and Ag) mapping [25]. Ag was distributed evenly over ZnO for the wet and dry-milled samples.…”

“…Ansari et al promoted oxygen vacancies in pure ZnO using an electrochemically active biofilm and observed an enhanced visible-light photocatalytic activity, attributed the increased vacancies [21]. AgZnO composite materials have been prepared by a range of methods [2][3][4][5][6][7][8][9][10], which include flame spray pyrolysis [33], electrochemical biogenic synthesis [14], photoreduction, and chemical reduction methods [44], Liang et al employed a hydrothermal method (using Zn nitrate and urea in water) to synthesize porous 3D flower-like Ag/ZnO heterostructures, deposited Ag using a photoreduction method, and observed an enhanced photodegradation rate for rhodamine (RhB) under UV light [27]. When Ag was deposited on the ZnO, the photoreduction medium was found to be very important.…”

“…To enhance the performances of bare ZnO, hybridization with metals (such as Ag) has extensively been employed [2][3][4][5][6][7][8][9][10].…”

The Electrochemical Assembly of ZnO Nanostructures Through the Modification and Influence of Soft Templates in Reverse Micelle

“…[1][2][3][4][5][6][7] Emulsions are a good example of soft templates among which reverse micelle or microemulsion-assisted nanostructured materials synthesis is one of the most popular techniques. 8,9 Reverse micelle solutions are homogeneous/isotropic systems which consists of three different phase in thermodynamics equilibrium, namely water droplets stabilized in a continuous oil phase with the assistance of a surrounding monolayer of preferentially aligned surfactants and cosurfactants.…”

Synthesis of ZnO nanoparticles by a hybrid electrochemical-thermal method: influence of calcination temperature

“…The effect of surfactants on the growth kinetics of ZnO NPs in reverse micellar system has also been reported (Ahmed et al, 2013). Moreover, ZnO@Ag core@shell NPs have been prepared by using water-in-oil microemulsions (Satter et al 2014). Particle size determination by effective mass model (EMM) (Holleman et al, 2001;Brus 1986) indicates a uniform particle size distribution of ZnO NPs in reverse micellar solutions; and both anionic, viz.…”