Effect of Cr doping on the properties and photocatalytic activity of Bi12TiO20

被引：16
作者：
Kim, Bo-Hyun [1 ]
Lim, Tae-Hee [1 ]
Roh, Jin-Woong [1 ]
Lee, Sang-Geun [1 ]
Ju, Chang Sik [1 ]
Park, Seong Soo [1 ]
Hong, Seong Soo [1 ]
Lee, Gun Dae [1 ]
机构：
[1] Pukyong Natl Univ, Div Chem Engn, Pusan 608739, South Korea
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2010年 / 99卷 / 01期
关键词：
Bi12TiO20; Photocatalyst; Cr-doping; BISMUTH TITANATE BI12TIO20; FORMIC-ACID; SILLENITE; DEGRADATION; OXIDATION; CHROMIUM; IMPURITY;
D O I：
10.1007/s11144-009-0122-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Undoped and Cr-doped Bi12TiO20 ( BTO) were prepared and used as photo-catalysts for the degradation of formic acid both under visible light and UV irradiation. The effects of the Cr doping on the visible light response and the photocatalytic activity of BTO were investigated. The prepared catalysts were characterized by using XRD, XPS, UV-Vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. The doping of Bi12TiO20 with low concentration of Cr leads to noticeable increase in visible light absorption and decrease in the recombination rate of photo-generated electrons and holes. As a result, the Cr-doped BTO showed a higher photocatalytic activity for the degradation of formic acid both under visible light and UV irradiation, as compared with undoped BTO.
引用
收藏
页码：217 / 224
页数：8
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