Synthesis of Silica Particles with Precisely Tailored Diameter  

一种可精确控制粒径的SiO2微球合成方法

作　　者：潘磊[1] 王艺[1] 徐洪波[2] 丁艳波[3] 李垚[1] 赵九蓬[2] 

机构地区：[1]哈尔滨工业大学复合材料与结构研究所,哈尔滨150080 [2]哈尔滨工业大学化工学院,哈尔滨150001 [3]沈阳工程学院新能源学院,沈阳110136

出　　处：《Chinese Journal of Chemical Physics》2014年第5期563-567,I0004,共6页化学物理学报（英文）

摘　　要：A modified seeded growth process of silica particles with a continuous addition of tetraethyl orthosilicate （TEOS） was presented to control the diameter of silica particles. The diameter of particles was monitored by dynamic light scattering to control the addition of TEOS. The increase in the diameter of the silica particles with time and the addition of TEOS was investigated. The diameter of silica seeds increased from 193 nm to 446 nm in 4 h. The final diameter of silica particles was tailored within the range of ±5 nm to the target diameter. Silica particles with diameter of 446 nm were synthesized and assembled into photonic crystals with a pseudo band gap centered at just 1000 nm. The feasibility and practicability of this modified seeded growth process was verified.

关 键 词：Silica particle Dynamic light scattering Seeded growth process Photonic crystal 

分 类 号：O[理学]