Preparation of SiO_2 Nanoparticles by Silicon and Their Dispersion Stability  

作　　者：庞金兴 

机构地区：[1]School of Science,Wuhan University of Technology,Wuhan 430070,China Prof

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2005年第2期74-76,共3页武汉理工大学学报（材料科学英文版）

摘　　要：Silicon dioxide sol was synthesized by silicon in the presence of alkali catalyst. SiO_2 nanoparticles (size in 8-15 nm) aqueous dispersion was prepared by using dispersion and surface modification in situ. The effects of reaction time, temperature, medium pH value, dispersant and surface-modifier on their diameters, sizes distribution and dispersion stability were also studied.The experimental results show that the preparation method can effectively resolve the dispersion stability of SiO_2 nanoparticles in water.Silicon dioxide sol was synthesized by silicon in the presence of alkali catalyst. SiO_2 nanoparticles (size in 8-15 nm) aqueous dispersion was prepared by using dispersion and surface modification in situ. The effects of reaction time, temperature, medium pH value, dispersant and surface-modifier on their diameters, sizes distribution and dispersion stability were also studied.The experimental results show that the preparation method can effectively resolve the dispersion stability of SiO_2 nanoparticles in water.

关 键 词：NANOPARTICLES forming in situ SURFACE-MODIFICATION size distribution dispersion stability 

分 类 号：TB383[一般工业技术—材料科学与工程]