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

doi:10.1007/s40242-020-0285-x

Chemical Research in Chinese Universities

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

Core-shell TiO₂-based photocatalyst swith 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 heteroatomnitrogen 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 transfer 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 to efficiently degrade methylene blue dye (MB) under visible light (λ ≥ 420 nm) with the assistance of H2O2.

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, People’s Republic of China

Received:2020-09-13 Revised:2020-10-11 Accepted:2020-10-13 Published:2020-10-15
Contact: YUAN Huiting*, DONG Wenjun* E-mail:wdong@ustb.edu.cn
About author:YUAN Huiting*, REN Huizhen, LI Minning, LI Zetong, LIU Mingrui, DONG Wenjun*, WANG Ge and ZHUANG Tao
Supported by:
the National Natural Science Foundation of China (Nos.52071027, 51872025), the National Key Research and Development Program of China (No.2016 YFB0701100)， the National Key Research and Development H863 Program of China (No.18H86303ZT0032702) and the Fundamental Research Funds for the Central Universities (Nos.FRF-GF-20-03A，FRF-GF-19-006B).

Abstract

Abstract: Core-shell TiO2-based photocatalyst swith 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 heteroatomnitrogen 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 transfer 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 to efficiently degrade 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

YUAN Huiting, REN Huizhen, LI Minning, LI Zetong, LIU Mingrui, DONG Wenjun, WANG Ge and ZHUANG Tao. Synthesis of N-TiO₂@NH₂-MIL-88(Fe) Core-shell Structure for Efficient Fenton Effect Assisted Methylene Bluedegradation under Visible Light[J]. Chemical Research in Chinese Universities, doi: 10.1007/s40242-020-0285-x.

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

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