3.1. The formation mechanism of CeO2 nanoparticles by two phase liquid–liquid microemulsion method
Microemulsion is a dispersed system with thermodynamic stabilization, isotrope, transparence or translucence formed by two immiscible liquids: water and oil. In microcosmic structure, it is composed of one or two kinds of droplets stabilized by surfactant interface membrane. According to its principle, mixing the micro- emulsion with two reaction substances together, chemical reaction occurred due to the substances within the water nucleus exchanged or transferred and the collision between glueball particles happened. Since