Anodizing Effects of Titanium-Mesh Surface for Fabrication of Photocatalytic Air Purification Filter

作者：Ochiai Tsuyoshi^*; Nakata Kazuya; Murakami Taketoshi; Horie Takuji; Morito Yuko; Fujishima Akira

来源：Nanoscience and Nanotechnology Letters, 2012, 4(5): 544-547.

DOI：10.1166/nnl.2012.1344

• Ti-Mesh
• Anodizing
• TiO2
• Photocatalytic Filter
• Air Purification

Anodizing process could improve the air purification ability of TiO2-sintered Ti-mesh filter. The surface morphology of Ti-mesh could be controlled by anodizing with suitable applying voltage. Ti-mesh which heated after anodizing at 70 V or 90 V shows purple or green color, respectively. It suggests that the presence of a specific thickness of the TiO2 layer (about several hundred nm) fabricated by anodizing process. Moreover, Ti-mesh samples that heated after anodizing at 70 V and 90 V show rough surface. The TiO2 particles were successfully sintered on these rough surfaces with the particle sizes of about 0.1 mu m. However, TiO2-sintered Ti-mesh sample without anodizing shows no interference color and highly aggregated TiO2 particles on the surface. The air purification activity of these Ti-mesh filters corresponded to its surface morphology. Therefore, anodizing process could strongly affect to not only surface morphology of Ti-mesh filter, but also its air purification efficiency. These results would be attractive to develop more effective photocatalytic air purification filter.

• 出版日期2012-5