| 초록 |
In this paper, we suggested the green process for fabricating ordered porous nanostructure by using supercritical fluid. As a reaction medium, we used supercritical carbondioxide(scCO2) because of its sustainable advantages; nontoxic, cheap, and nonflammable. It has been much attention to produce ordered porous materials due to its wide range of applications. We chose titanium isopropoxide as a precursor for preparing orderd porous titania nanostructure which named titania inverse opals. By use of three-dimensional latex array templates, sol-gel reaction ofin scCO2 is conducted. After calcinations of templates, the inverse opal materials obtained. The porosity of the materials obtained for each template is different. Furthermore, shrinkage of the network upon condensation in scCO2 was small. Scanning electron microscopy(SEM) was used for characterization. |
