Hollow silicon dioxide microsphere with different surface configurations and preparation method thereof

• Main Authors: LIU SHIQUAN, WEI MEIYING
• Format: Patent
• Language: Chinese; English
• Published: 19.05.2010
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention relates to a hollow silicon dioxide microsphere with different surface configurations prepared in the same system and a preparation method thereof, belonging to the technical field of functional inorganic powdery materials. The hollow silicon dioxide microsphere with the different surface configurations has the diameter of 500 nm-4 mum and the shell thickness of 40-125 nm; a spherical shell is formed by packing and connecting silicon dioxide nano particles; gaps among the silicon dioxide nano particles forming the spherical shell range from 0 nm to 100 nm; and the silicon dioxide nano particles forming the spherical shell have nano micropores or mesopores, pore diameters range from 1.6 nm to 2.4 nm, specific surface areas range from 290 m2/g to 1400 m2/g, and pore volumes range from 0.24 ml/g to 1 ml/g. The invention also provides the preparation method of the hollow silicon dioxide microsphere with the different surface configurations. The regulation and control means of the surface configurati