Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Electrochemical Synthesis of TiO2 Photocatalyst with Anodic Porous Alumina

  • Hattori, Takanori (Department of Applied Chemistry, Faculty of Science & Technology, Kinki University) ;
  • Fujino, Takayoshi (Department of Applied Chemistry, Faculty of Science & Technology, Kinki University) ;
  • Ito, Seishiro (Department of Applied Chemistry, Faculty of Science & Technology, Kinki University)
  • Published : 2007.11.27
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Abstract

Aluminum was anodized in a $H_2SO_4$ solution, and titanium (IV) oxide ($TiO_2$) was electrodeposited into nanopores of anodic porous alumina in a mixed solution of $TiOSO_4$ and $(COOH)_2$. The photocatalytic activity of the prepared film was analyzed for photodegradation of methylene blue aqueous solution. Consequently, we found it was possible to electrodeposit $TiO_2$ onto anodic porous alumina, and synthesized it into the nanopores by hydrolysis of a titanium complex ion under AC 8-9 V when film thickness was about $15-20{\mu}m$. The photocatalytic activity of $TiO_2$-loaded anodic porous alumina ($TiO_2/Al_2O_3$) at an impressed voltage of 9 V was the highest in every condition, being about 12 times as high as sol-gel $TiO_2$ on anodic porous alumina. The results revealed that anodic porous alumina is effective as a substrate for photocatalytic film and that high-activity $TiO_2$ film can be prepared at low cost.

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