Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (3): 447-452.doi: 10.1007/s40242-020-0106-2

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Ti-MOF Derived N-Doped TiO2 Nanostructure as Visible-light-driven Photocatalyst

HE Yilei1, ZHANG Xing1, WEI Yanze1,2, CHEN Xiaoyu1, WANG Zumin2, YU Ranbo1,3   

  1. 1. Department of Physical Chemistry, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China;
    2. State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    3. Key Laboratory of Advanced Material Processing & Mold, Ministry of Education, Zhengzhou University, Zhengzhou 450002, P. R. China
  • Received:2020-04-13 Revised:2020-05-12 Online:2020-06-01 Published:2020-05-30
  • Contact: WANG Zumin, YU Ranbo E-mail:wangzm@ipe.ac.cn;ranboyu@ustb.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21671016, 51872024, 51932001), the National Key R&D Program of China(No.2018YFA0703503) and the China Postdoctoral Science Foundation(No.2019M650849).

Abstract: Nanostructured N-doped TiO2 photocatalyst has been prepared via a new approach from Ti-based MOF[NH2-MIL-125(Ti)] precursor. The success of N doping enhances light absorption and narrows the bandgap. Moreover, the as-prepared nanostructure is constructed with tiny nanoparticles and resembles a pie-like morphology inherited from the MOF, which accelerates electron transfer. Hence, as a photocatalyst for the degradation of methylene blue(MB) under visible light irradiation, the N-doped TiO2(N-TiO2) nanostructure shows higher photocatalytic activity with a reaction rate constant of 0.018 min-1 than that of the TiO2-P25 and TiO2 under the visible light.

Key words: TiO2, Metal-organic framework, Photo-degradation, N doped, Visible-light photocatalysis