Preparation methods of nanoporous filter by anodization of Ti

摘要

PURPOSE: A nanoporous filter manufacturing method which uses electrochemical anode oxidation of titanium is provided to apply electrochemical anode oxidation to titanium to form a titania nanostructure, thereby manufacturing a nanoporous filter which is usable as a photo catalytic filter. CONSTITUTION: A nanoporous filter manufacturing method which uses electrochemical anode oxidation of titanium comprises following steps. (a) A base material, which is titanium or titanium, is dipped into a solvent in an ultrasonic cleaner, and is washed. (b) The washed base material is spot-welded to form an electrode point. (c) The base material, which is formed with the electrode point, is dipped into an electrolyte in which metallic salt is contained; and the base material is used as a cathode, and platinum is used as an anode. (d) Voltage is provided to the cathode and the anode to anodize the surface of the base material; and an anodized metallic base material, which a titania nanostructure is formed on, is formed. (e) The anodized metallic base material is dipped into a cleaning solvent to wash out the residual electrolyte. (f) the washed anodized base metallic material is heat-treated.