Study on Improvement of Photocatalytic Function by Use of Microcutting Texture

Abstract

This study aims to develop a high-functional photocatalytic film, of which surface is regularly textured by the micro machining to earn the real surface area. In this work, a regularly textured titanium dioxide film surface was fabricated by anodic oxidizing a pure titanium plate with regularly arrayed micro cutting grooves, and its wettabilty was evaluated. Microcutting grooves were machined by a 3-axis NC control precision machine tool with a single point diamond cutter. Anodic oxidation experiments were conducted by using the self-developed equipment with diluted acetic acid as the electrolyte. As a result, it was found that the wettability of the titanium dioxide film surface regularly textured by synchronized 3-axial micro cutting was superior to those of the mirror finished or irregularly textured surfaces under the irradiation environment by the ultraviolet rays.