Photocatalytic Activity of Titanium Dioxide Powder Fabricated from an Anodized Titanium Sheet under Ultra-Violet and Visible Light Irradiation
Photocatalytic Activity of Titanium Dioxide Powder Fabricated from an Anodized Titanium Sheet under Ultra-Violet and Visible Light Irradiation作者机构：Steel Research Laboratories Nippon Steel and Sumitomo Metal Corporation 20-1 Shintomi Futtsu Japan Head Office Nippon Steel and Sumitomo Metal Corporation Tokyo Japan Toyo Rikagaku Kenkyusho Corporation Niigata Japan
出 版 物：《Journal of Surface Engineered Materials and Advanced Technology》 (表面工程材料与先进技术期刊（英文）)
年 卷 期：2017年第7卷第1期
页 面：13-23页
主 题：Photocatalysis Titanium Titanium Dioxide Powder Anodic Oxidation Ultra-Violet Visible-Light Response
摘 要：A commercially pure titanium sheet with titanium carbide (TiC) precipitated in its surface layer was anodized in NH4NO3 aqueous solution and heat treated in air. The photocatalytic activity of titanium dioxide powder collected from the surface of the anodized titanium sheet was evaluated under ultra-violet and visible light irradiation. It showed relatively high photocatalytic activity in 0.1 mol/l potassium iodide solution, which was almost equal to the activity level of TiO2 powder (P-25) manufactured by Degussa Corporation. The better photocatalytic activity under ultra-violet irradiation is considered to be related to the formation of anatase type titanium dioxide. Photocatalytic activity under visible light irradiation was also observed, which was considered to be attributable to impurity doping, (carbon), in the titanium dioxide powder.
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