Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (2): 319-324.doi: 10.1007/s40242-019-8189-3

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Graphitic Carbon Nitride Microspheres Supported α-FeO(OH) Hybrids for Visible Light Photodegradation of MO

WANG Junlin1, YI Yongjie1, LI Mengjia1, CHANG Yue1,2,3, ZHA Fei1   

  1. 1. College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China;
    2. Key Laboratory of Eco-environment-related Polymer Materials, Ministry of Education, Northwest Normal University, Lanzhou 730070, P. R. China;
    3. Key Laboratory of Polymer Material of Gansu Province, Northwest Normal University, Lanzhou 730070, P. R. China
  • Received:2018-06-05 Revised:2018-12-05 Online:2019-04-01 Published:2019-04-30
  • Contact: CHANG Yue E-mail:cy1126@nwnu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21865031).

Abstract: Graphitic carbon nitride(g-C3N4) microspheres supported α-FeO(OH) hybrids[α-FeO(OH)/g-C3N4] were prepared by means of a self-assembly method in deionized water. By UV-visible diffuse reflectance spectroscopy, it has been confirmed that α-FeO(OH)/g-C3N4 has a wider absorption range than g-C3N4. The feature of α-FeO(OH)/g-C3N4 can be attributed to the efficient separation of the electron-hole pairs with photoluminescence spectra. The degradation rate of methyl orange(MO) is up to 99% under the optimal conditions of 110 min, initial concentration of 30 mg/L, an α-FeO(OH)/g-C3N4 dosage of 15 mg as well as visible light. The mechanism for this photocatalytic reaction was proposed, with hydroxyl radicals being a major active catalytic species.

Key words: α-FeO(OH)/g-C3N4, Self-assembly method, Photocatalyst, Methyl orange(MO), Visible light