Synthesis of CeO2/TiO2 nanotubes and heterogeneous photocatalytic degradation of methylene blue

被引：63
|
作者：
Le Thi Thanh Tuyen [1 ,3 ]
Dao Anh Quang [2 ]
Tran Thanh Tam Toan [1 ]
Truong Quy Tung [2 ]
Tran Thai Hoa [1 ]
Tran Xuan Mau [1 ]
Dinh Quang Khieu [1 ]
机构：
[1] Hue Univ, Univ Sci, Hue City 530000, Vietnam
[2] Hue Ind Coll, Hue City 530000, Vietnam
[3] Le Quy Don Gifted High Sch, Danang City 550000, Vietnam
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2018年 / 6卷 / 05期
关键词：
CeO2/TiO2; nanotubes; Photocatalytic activity; Visible light; Box-Behnken design; RESPONSE-SURFACE METHODOLOGY; BOX-BEHNKEN DESIGN; TIO2; NANOTUBE; HIGHLY EFFICIENT; CATALYTIC PERFORMANCES; SOLAR-ENERGY; MIXED OXIDES; OPTIMIZATION; ARRAYS; REDUCTION;
D O I：
10.1016/j.jece.2018.09.022
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, the preparation of CeO2/TiO2 nanotubes (CeO2/TiO2-NTs) is demonstrated using the hydro-thermal method. The conditions for the synthesis were optimised using the Box-Behnken design. The samples obtained were characterised by means of X-ray diffraction, high-resolution transmission electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, nitrogen adsorption/desorption isotherms, and Raman spectroscopy. The photocatalytic behaviour under visible light and kinetics of the CeO2/TiO2-NTs catalyst via methylene blue degradation were addressed. The results showed that the introduction of CeO2 into TiO2-NTs enhanced the photocatalytic activity in the visible light region. CeO2/TiO2-NTs were stable and potential as a visible light photocatalyst for the organic substances degradation in aqueous solutions.
引用
收藏
页码：5999 / 6011
页数：13
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