| 초록 |
Nanoporous titanium dioxide (TiO2) is an attractive material for various applications because of its photocatalytic property and large surface area. One of the most widely used processes to produce nanoporous TiO2 is the anodization of sheet or wire shaped titanium. However, the anodization of titanium particle has not yet been researched. Here, we focus on the fabrication of cage-structured TiO2 nanoporous particle by anodic oxidation. The experiment involves two-step anodization for highly ordered nanostructure, and etching of the Ti part underneath TiO2 for hollow and cage-like TiO2 microsphere. The fabricated nanoporous morphologies were observed with SEM. Then, the photocatalytic performance of the nanoporous hollow microparticles were compared to existing nanoparticles and anodized nanoporous structures from titanium sheet. These hollow nanoporous microspheres can be applicable to various fields such as gas sensing, drug delivery, dye-sensitized solar cells, and photocatalysis. |
