Kinetics-Controllable Hetero-Precipitation Process on the Nanoscale Solid-Liquid Interface of Spherical Particles
Based on the growth kinetics of the SiO2 particles, we studied the kinetic hetero-precipitation process on the interface of polystyrene (PS) microscale particles. The nanoscale SiO2 shell thickness increased with increasing time and was proportional to the square root of the initial concentration of TEOS precursor while governed by hetero-precipitation process. Moreover, the hetero-precipitation process followed the first-order growth mechanism of silica onto the surface of templating PS pariticles. Properly controlling the reagent concentrations could alleviate and even avoid, to a certain extent, aggregation among PS@SiO2 particles that could otherwise have an adverse effect on the properties and applications of those composite particles and the corresponding SiO2 hollow products.
Hetero-precipitation dynamic control core-shell nanostructure
Xiao-Feng Wu Yu-Chao Liao Ren-Liang Yue Yun-Fa Chen
State key Laboratory of Multiphase Complex System, Institute of Process Engineering of ChineseAcadem State key Laboratory of Multiphase Complex System, Institute of Process Engineering of ChineseAcadem State key Laboratory of Multiphase Complex System, Institute of Process Engineering of Chinese Acade
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
45-50
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）