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

被引：73

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

页码：5999 / 6011

页数：13

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