| 초록 |
SiO2 inverse opals were produced in supercritical carbon dioxide with three-dimensional PS(Polystyrene) latex arrays as templates. The polymeric templates were reacted with TEOS(tetraethyl ortho-silicate) and H2O in scCO2 at certain Conditions. After calcination of this template, highly porous materials replicating the structure of the original template were obtained. The porosity of the materials obtained for each template is different. Furthermore, shrinkage of the network upon condensation in scCO2 was small. The synthesis of inverse opals in scCO2 overcomes some of the limitations of the liquid-phase techniques, being a faster method of synthesis and, at the same time, rendering materials of unique properties. |
