A ternary system of SiO2-CaO-P2O5 hollow nanospheres has been successfully prepared by sol-gel method using polystyrene (PS) nanospheres as template. The inorganic shell was produced using tetraorthosilicate (TEOS) as the silica source and tri-calciumphospate as calcium and phosphorus sources, respectively. The positive surface charge of the template and the [template]/[TEOS] ratio were the key parameters for the creation of a stable primary inorganic network and the further growth of the shell. The removal of the polymeric core through a thermal treatment procedure created an inner void space with mean diameter 250 nm while the outer mean diameter was 330 nm.
|Original language||English (US)|
|Number of pages||4|
|State||Published - Jan 15 2012|
Bibliographical noteFunding Information:
This work was funded by the European Research Council (ERC) under the project “NANOTHERAPY” with reference number 232959.
- Hollow nanospheres
- Sol-gel preparation
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering