abstract |
(57) Abstract: The present invention provides a low-cost method for forming a porous titanium oxide film having a surface area increased from several hundred times to about 1,000 times the apparent area on the surface of a metal substrate. In addition, the present invention provides a manufacturing method for making the porous oxide film have high activity. A step of preparing a metal substrate, anodizing at least one surface of the metal substrate to form an anodic oxide film, and a liquid or metal alkoxide or metal salt containing fine oxide particles on the anodic oxide film Forming an oxide film by applying the above solution. |