Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (6): 1068-1075.doi: 10.1007/s40242-020-0285-x

• Articles • Previous Articles     Next Articles

Synthesis of N-TiO2@NH2-MIL-88(Fe) Core-shell Structure for Efficient Fenton Effect Assisted Methylene Blue Degradation Under Visible Light

YUAN Huiting, REN Huizhen, LI Minning, LI Zetong, LIU Mingrui, DONG Wenjun, WANG Ge, ZHUANG Tao   

  1. Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
  • Received:2020-09-13 Revised:2020-10-13 Online:2020-12-01 Published:2020-12-03
  • Contact: YUAN Huiting, DONG Wenjun E-mail:wdong@ustb.edu.cn;18610783785@163.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.52071027, 51872025), the National Key Research and Development Program of China(No.2016YFB0701100), the National Key Research and Development H863 Program of China (No.18H86303ZT0032702) and the Fundamental Research Funds for the Central Universities of China(Nos.FRF-GF-20-03A, FRF-GF-19-006B).

Abstract: Core-shell TiO2-based photocatalysts with specific composition, morphology, and functionality have attracted considerable attention for their excellent degradation properties on organic pollutants via a photocatalytic oxidation process. Herein, a N-TiO2@NH2-MIL-88(Fe) core-shell structure was prepared by coating NH2-MIL-88(Fe) on nitrogen-doped TiO2(N-TiO2) nanoparticles. Introduction of heteroatom nitrogen to pure TiO2 expands the spectral response range, leading to enhanced quantum efficiency of photocatalyst. Furthermore, loading NH2-MIL-88(Fe) on N-TiO2 improved the adsorption ability of the nanocomposites due to the porous tunnels of NH2-MIL-88(Fe). The resulted core-shell N-TiO2@NH2-MIL-88(Fe) nanocomposites realized the transfer of photo excited electrons from N-TiO2 to NH2-MIL-88(Fe) rapidly, partially reduced Fe3+ to Fe2+ in NH2-MIL-88(Fe), and further enhanced the Fenton effect on efficiently degrading methylene blue dye(MB) under visible light(λ ≥ 420 nm) with the assistance of H2O2.

Key words: NH2-MIL-88(Fe), N-TiO2, Photocatalysis, Fenton effect