Citation: LÜ Hong-Jie, GAO Xin, MENG Cheng-Qi, CHENG Ting, LIU Chao, CHEN Xiao-Wei, DONG Peng-Yu, MENG Qiang-Qiang, XI Xin-Guo. Synthesis and Visible Light Photocatalytic Activity of Nitrogen-Doped TiO₂/HTi₂NbO₇ Nanosheet Nanocomposite[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(3): 422-432. doi: 10.11862/CJIC.2019.053 shu

Synthesis and Visible Light Photocatalytic Activity of Nitrogen-Doped TiO₂/HTi₂NbO₇ Nanosheet Nanocomposite

LÜ Hong-Jie ^1,2 ,
GAO Xin ^1,2 ,
MENG Cheng-Qi ^2,3 ,
CHENG Ting ^1,2 ,
LIU Chao ^2,, ,
CHEN Xiao-Wei ² ,
DONG Peng-Yu ⁴ ,
MENG Qiang-Qiang ⁴ ,
XI Xin-Guo ^5,,

1.
School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
2.
School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
3.
School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
4.
Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
5.
School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China

Corresponding author: LIU Chao, cliu@ycit.edu.cn XI Xin-Guo, xi_xinguo@ycit.edu.cn
Received Date: 5 September 2018
Revised Date: 3 December 2018

Figures(12)

The nitrogen-doped nanocomposite based on TiO₂ nanoparticles and HTi₂NbO₇ nanosheets was success-fully synthesized by the following procedures:Layered CsTi₂NbO₇ was firstly prepared by high temperature solid-state method, and then treated with HNO₃ solution to obtain layered HTi₂NbO₇ by proton-exchange reaction. The resulted layered HTi₂NbO₇ was well dispersed in tetrabutylammonium hydroxide (TBAOH) solution in order to prepare HTi₂NbO₇ nanosheets by exfoliation reaction and then freeze-dried treatment. Finally, to prepare nitrogen-doped TiO₂/HTi₂NbO₇ nanosheets (denoted as N-TTN) nanocomposites, the mixtures of the freeze-dried HTi₂NbO₇ nanosheets and titanium(Ⅳ) isopropoxide were calcinated in the presence of urea as N source. The as-prepared samples were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), photoelectrochemical properties measurements, UV-Vis spectroscopy as well as N₂ adsorption-desorption measurements. It was found that anatase TiO₂ nanoparticles were well-distributed on the surface of HTi₂NbO₇ nanosheets, resulting in the formation of heterojunction structure between two components. The photocatalytic activities of samples were evaluated by the photodegradation of rhodamine B (RhB) under visible light irradiation. It indicated that the resultant N-TTN nanocomposite showed a highest photocatalytic activity toward the degradation of RhB, owing to the synergistic effects of nitrogen doping, the formation of heterojunction, increased specific surface area and rich mesoporous structure.
- TiO₂,
- HTi₂NbO₇ nanosheet,
- N-doped,
- composite,
- photocatalytic properties
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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis and Visible Light Photocatalytic Activity of Nitrogen-Doped TiO2/HTi2NbO7 Nanosheet Nanocomposite

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通讯作者: 陈斌, bchen63@163.com

Synthesis and Visible Light Photocatalytic Activity of Nitrogen-Doped TiO₂/HTi₂NbO₇ Nanosheet Nanocomposite