PROCESS FOR PREPARING FLUORINATED, INORGANIC HOLLOW NANOSPHERES USING WATER-BASED SILICA PRECURSORS

摘要

The disclosure provides a process for preparing a fluorinated silica hollow nanosphere comprising: providing a mixture comprising water, at least one non-reactive solvent, at least one fluorosilane, at least one water based silica precursor solution, such as sodium silicate, potassium silicate, ammonium silicate or pre-formed silicic acid, and at least one surfactant; shearing the components of the mixture with high shear energy at an energy density of at least 10^6 J/m^3 to form a mini-emulsion; initiating a one-step sol-gel reaction by adjusting the pH to about 4 to 10 and then initiating a one-step sol-gel forming fluorinated hollow silica nanospheres having a particle size of less than about 400nm.