| Hybrid nano-material is composed of two or more kinds of components. It shows properties that one-component material does not and also behaves some new properties. Core-shell material has special optical, electrical and chemical properties according to their different structure, size and composition arrangement. This character of core-shell wins it more and more attention nowadays.Due to its unique cavity structure, good thermal and mechanical performance, hollow core-shell material has become a hot topic recently. Though there are various synthetic approaches for hollow core-shell material, the soft template method has been more widely used for its advantages, such as short reaction time, high product yields and structural robustness of the shells.This paper is about use the Brij(?)58 as a soft template to get reverse micelles microemulsion in cyclohexane and added the bifunctional ligand (one group to stablizie the metal ion, the other group to form hydrogen bonds with oxygen atoms of Brij(?)58) into the system, reducted, then encapsulated in silica to synthesize a new structure and particles size about 40 nm hollow Cu@SiO2 and Fe@SiO2 core-shell nanoparticles. The materials were characterized by TEM, XPS, XRD technologies. We further investigated the effects of ligand structure, ligand concentration, reducing agent type, reduction time, the quantity of ammonia and other factors on the sample morphology in different reaction conditions.In addition, the effects of R (mole ratio of water to surfactant), amount of electrolyte and shear rate on the viscosity of Brij(?)58/cyclohexane/water reverse microemulsion were also investigated. It might provide experimental guidance for controlled synthesis of nanoparticles.
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