Citation: MENG Cheng-Qi, LÜ Hong-Jie, DONG Peng-Yu, LIU Chao, CHEN Xiao-Wei, GAO Xin, CHENG Ting, LIU Yin, LI Jian-Jun, XI Xin-Guo. Synthesis and Visible-Light-Driven Photocatalytic Activity of Nitrogen-Doped HTi₂NbO₇ Nanosheet[J]. Chinese Journal of Inorganic Chemistry, ;2020, 36(9): 1707-1716. doi: 10.11862/CJIC.2020.170 shu

Synthesis and Visible-Light-Driven Photocatalytic Activity of Nitrogen-Doped HTi₂NbO₇ Nanosheet

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

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

Corresponding author: LIU Chao, dongpy11@gmail.com CHEN Xiao-Wei, cliu@ycit.edu.cn XI Xin-Guo, xi_xinguo@ycit.edu.cn
Received Date: 1 April 2020
Revised Date: 7 May 2020

Figures(11)

Firstly, layered CsTi₂NbO₇ was prepared by high temperature solid-state method, and then layered HTi₂NbO₇ was obtained by a proton-exchange reaction treated with HNO₃ solution. Secondly, the obtained layered HTi₂NbO₇ was well dispersed in tetrabutylammonium hydroxide (TBAOH) solution in order to prepare HTi₂NbO₇ nanosheets by exfoliation reaction. Thirdly, the as-prepared HTi₂NbO₇ nanosheets were dried, and then mixed with urea. Finally, nitrogen-doped HTi₂NbO₇ nanosheet photocatalyst was successfully synthesized by heating the above mixture. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Ultraviolet-Visible diffuse reflectance absorption spectrum (UV-Vis DRS) as well as N₂ adsorption-desorption measurements to characterize the crystal structure, morphology, specific surface area, pore distribution and light absorption capacity of as-prepared samples in detail. It was found that the doped nitrogen resulted in an intrinsic narrowing band-gap so as to widen light response region, and the doped nitrogen atoms were mainly located at the interstitial position of Ti₂NbO₇^- sheets and chemically bonded with hydrogen ions. Moreover, compared with N-doped HTi₂NbO₇, N-doped HTi₂NbO₇ nanosheets had a larger specific surface area and richer mesoporous structure due to the relatively loose and irregular arrangement of the titanium niobate nanosheets. Therefore, the N-doped HTi₂NbO₇ nanosheets exhibited higher visible-light photocatalytic activity for degradation of RhB than that for N-doped layered HTi₂NbO₇.
- layered compounds,
- heterogeneous catalysis,
- charge transfer,
- nanostructures
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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis and Visible-Light-Driven Photocatalytic Activity of Nitrogen-Doped HTi2NbO7 Nanosheet

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通讯作者: 陈斌, bchen63@163.com

Synthesis and Visible-Light-Driven Photocatalytic Activity of Nitrogen-Doped HTi₂NbO₇ Nanosheet