Effects of Pt-loading on Formation and Visible Light-Induced Photocatalytic Activity of Bismuth Titanate

被引:0
|
作者
Hashimoto, Tadanori [1 ]
Matsumura, Kotaro [1 ]
Okada, Syunki [1 ]
Nasu, Hiroyuki [1 ]
Ishihara, Atsushi [1 ]
机构
[1] Mie Univ, Grad Sch Engn, Div Chem Mat, 1577 Kurimamachiya Cho, Tsu, Mie 5148507, Japan
关键词
Bismuth titanate; Photocatalytic activity; Methylene Blue degradation; Nucleating agent; Pt-loading;
D O I
10.3775/jie.97.70
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Pt/TiO2-Bi2O3 test catalysts were prepared by impregnating Pt on the sol-gel derived TiO2-Bi2O3 to give these testpieces high photocatalytic activity under visible light irradiation. The optimum Pt support content and TiO2 content were observed in the ranges 0.05-0.3 wt% and 17-28 wt%, respectively in the photocatalytic activity for Methylene Blue (MB) degradation on Pt/TiO2-Bi2O3. Specifically. those 0.1Pt/17TiO(2)-83Bi(2)O(3), 0.2Pt/23TiO(2)-77Bi(2)O(3) and 0.3Pt/28TiO(2)-72Bi(2)O(3) samples showed relatively higher photocatalytic activity for the MB degradation. The results were closely related to (1) the restriction of recombination of the photo-induced electron and hole pairs by Pt, and (2) the presence of bismuth titanate with such high Ti content as built up by Pt.
引用
收藏
页码:70 / 76
页数:7
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