Degradation of Leather Dye Using CeO2-SnO2 Nanocomposite as Photocatalyst Under Sunlight

被引：41

作者：

Foletto, Edson Luiz ^{[1
]}

Battiston, Suellen ^{[1
]}

Collazzo, Gabriela Carvalho ^{[1
]}

Bassaco, Mariana Moro ^{[1
]}

Mazutti, Marcio Antonio ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Dept Chem Engn, BR-97105900 Santa Maria, RS, Brazil

来源：

WATER AIR AND SOIL POLLUTION | 2012年 / 223卷 / 09期

关键词：

CeO2-SnO2; Photocatalysis; Dye; TOC; Sunlight; BLACK; 38; DYE; VISIBLE-LIGHT; METHYL-ORANGE; TIO2; COMPOSITE; FILMS; PHOTODEGRADATION; IRRADIATION; FABRICATION; GRAPHENE;

D O I：

10.1007/s11270-012-1313-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nanocomposite of CeO2-SnO2 containing different CeO2 contents was prepared by coprecipitation process. The material obtained was characterized by Xray diffraction and N-2 adsorption-desorption isotherms. Its photocatalytic activity was tested in the degradation of azo dye of leather, Direct Black 38, in aqueous solution under sunlight. The photocatalytic activity of the coupled CeO2-SnO2 oxide ranged depending on the CeO2 contents. The optimum amount of CeO2 for the synthesis of CeO2-SnO2 was 7 wt.% since the nano-particles showed high photocatalytic activity in the degradation of the dye, similar to that of the TiO2-P25 photocatalyst. The kinetics of photocatalytic degradation and total organic carbon removal under sunlight were found to follow a first-order rate law. The results indicated that CeO2-SnO2 can be used for the removal of dyes from wastewater.

引用

页码：5773 / 5779

页数：7

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