Activation of photocatalytic coatings applied on aluminum oxidation film

被引：1

作者：

Department of Applied Chemistry, Faculty of Science and Technology, Kinki University, 3-4-1 Kowakae, Higashiosaka, Osaka 577-8502 ^{[1
]}

不详 ^{[2
]}

机构：

[1] Department of Applied Chemistry, Faculty of Science and Technology, Kinki University, Higashiosaka, Osaka 577-8502

[2] Kinki University, Higashiosaka, Osaka

来源：

Keikinzoku J Jpn Inst Light Met | 2006年 / 4卷 / 197-202期

关键词：

Aluminum; Anodic oxidation; Photocatalyst; Platinum;

D O I：

10.2464/jilm.56.197

中图分类号：

学科分类号：

摘要：

Aluminum was anodized in a H 2SO 4 solution, and then platinum and tin were electrodeposited into nano-pores of anodic oxidation film in H 2PtCl 6 and SnSO 4 solutions. Titanium (IV) oxide (TiO 2) thin film was immobilized on electrolytically colored anodic oxide coating of aluminum. The photocatalytic activity of prepared films was analyzed for photolysis of the malachite green. In the results, the photocatalytic activity of Pt loaded TiO 2 (TiO 2/Pt/Al 2O 3) film was highest in all films, and the relation between the amount of metallic colloid and photocatalytic activity was confirmed. Photocatalytic activity improved with electrodeposition increases, and activity was highest when the amount of platinum was about 3.1 μgcm -2. But photocatalytic activity began to decline when the amount of platinum exceeded 3.1 μgcm -2 because the platinum had a recombination center and decreasing surface area by electrodeposition. The photocatalytic activity of Sn loaded TiO 2 (TiO 2/Sn/Al 2O 3) film didn't reach the TiO 2/Pt/Al 2O 3 film, indicating photocatalytic activity of about 1.8 times compared with TiO 2/Al 2O 3 film. SnO 2 manifested photocatalysis as well as TiO 2, confirming that sintered tin was SnO 2 in the results of ESCA. Therefore, anodic oxidation film and electrolytically colored anodic oxide coating were effective substrates of photocatalyst films.

引用

页码：197 / 202

页数：5