Synthesis, characterization and photocatalytic study of graphene oxide and cerium co-doped in TiO2
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- 作者：Jia Li ; Quan Zhang ; Liping Zeng ; Deliang He
- 刊名：Applied Physics A: Materials Science & Processing
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：122
- 期：2
- 全文大小：1,125 KB
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Quan Zhang (1)
Liping Zeng (2)
Deliang He (3)
1. College of Civil Engineering, Hunan University, No. 2 Lushan South Road, Yuelu District, Changsha, 410082, Hunan, China
2. Department of Architectural Engineering, Hunan Institute of Engineering, Xiangtan, 411104, Hunan, China
3. College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China - 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Condensed Matter
Optical and Electronic Materials
Nanotechnology
Characterization and Evaluation Materials
Surfaces and Interfaces and Thin Films
Operating Procedures and Materials Treatment - 出版者：Springer Berlin / Heidelberg
- ISSN：1432-0630
文摘
The nanocomposite of titanium dioxide (TiO2) combined with graphene oxide (GO) and cerium (Ce) was successfully synthesized via sol–gel method followed by calcining at 300 °C for 2 h. The composite was characterized by X-ray diffraction, ultraviolet–visible diffuse reflectance spectroscopy, scanning electron microscopy (SEM) and Brunauer–Emmett–Teller. The photocatalytic activity was evaluated by photodegradation of methylene blue (MB) under the irradiation of xenon lamp. This study demonstrated that GO and Ce co-doped in TiO2 could broaden absorption edge to the visible light and increase surface area of samples. SEM observation showed that addition of Ce could solve the problem of the agglomeration of GO under the same experimental conditions. Moreover, the MB photocatalytic degradation rate of the composite with GO doped for 0.2 % and Ce doped for 0.6 % (mass ratio) was up to 97.7 %, which was largely attributed to the synergistic effects in the GO, Ce and TiO2 system.