中国物理B ›› 2020, Vol. 29 ›› Issue (5): 57801-057801.doi: 10.1088/1674-1056/ab7e95

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Effect of heating time on structural, morphology, optical, and photocatalytic properties of g-C3N4 nanosheets

Nguyen Manh Hung, Le Thi Mai Oanh, Lam Thi Hang, Pham Do Chung, Pham Thi Duyen, Dao Viet Thang, Nguyen Van Minh   

  1. 1 Center for Nano Science and Technology, Hanoi National University of Education, 136 Xuan Thuy Road, Cau Giay District, Hanoi, 100000, Vietnam;
    2 Department of Physics, Hanoi National University of Education, 136 Xuan Thuy Road, Cau Giay District, Hanoi, 100000, Vietnam;
    3 Faculty of Basic Sciences, Hanoi University of Natural Resources and Environment, 41 A Phu Dien Road, North Tu Liem, Hanoi, 100000, Vietnam;
    4 Hanoi University of Mining and Geology, Duc Thang ward, North Tu Liem District, Hanoi, 100000, Vietnam;
    5 Military science Academy, 322 Le Trong Tan street, Dinh Cong, Hoang Mai, Hanoi, 100000, Vietnam
  • 收稿日期:2019-12-13 修回日期:2020-03-02 出版日期:2020-05-05 发布日期:2020-05-05
  • 通讯作者: Le Thi Mai Oanh E-mail:lemaioanh@gmail.com
  • 基金资助:
    Project supported by the scientific and technological project at the level of Ministry of Education, Vietnam (Grant No. B2018-SPH-06-CTrVL).

Effect of heating time on structural, morphology, optical, and photocatalytic properties of g-C3N4 nanosheets

Nguyen Manh Hung1,4, Le Thi Mai Oanh1,2, Lam Thi Hang1,3, Pham Do Chung2, Pham Thi Duyen1,5, Dao Viet Thang1,4, Nguyen Van Minh1,2   

  1. 1 Center for Nano Science and Technology, Hanoi National University of Education, 136 Xuan Thuy Road, Cau Giay District, Hanoi, 100000, Vietnam;
    2 Department of Physics, Hanoi National University of Education, 136 Xuan Thuy Road, Cau Giay District, Hanoi, 100000, Vietnam;
    3 Faculty of Basic Sciences, Hanoi University of Natural Resources and Environment, 41 A Phu Dien Road, North Tu Liem, Hanoi, 100000, Vietnam;
    4 Hanoi University of Mining and Geology, Duc Thang ward, North Tu Liem District, Hanoi, 100000, Vietnam;
    5 Military science Academy, 322 Le Trong Tan street, Dinh Cong, Hoang Mai, Hanoi, 100000, Vietnam
  • Received:2019-12-13 Revised:2020-03-02 Online:2020-05-05 Published:2020-05-05
  • Contact: Le Thi Mai Oanh E-mail:lemaioanh@gmail.com
  • Supported by:
    Project supported by the scientific and technological project at the level of Ministry of Education, Vietnam (Grant No. B2018-SPH-06-CTrVL).

摘要: Effect of heating time on the structural, morphology, optical, and photocatalytic properties of graphitic carbon nitride (g-C3N4) nanosheets prepared at 550℃ in Ar atmosphere is studied. The investigations are carried out by using x-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), UV-vis absorption, and photoluminescence (PL). At a heating temperature of 550℃, g-C3N4 nanocrystals are formed after 0.5 h and become more orderly as the heating time increases. The surface area of the g-C3N4 nanosheets significantly increases as the preparation time increases. The g-C3N4 prepared in 2.5 h shows the highest photocatalytic performance, decomposing completely 10 ppm RhB solution under xenon lamp irradiation for 2.0 h.

关键词: nanosheets, photocatalytic, heating time, Ar atmosphere

Abstract: Effect of heating time on the structural, morphology, optical, and photocatalytic properties of graphitic carbon nitride (g-C3N4) nanosheets prepared at 550℃ in Ar atmosphere is studied. The investigations are carried out by using x-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), UV-vis absorption, and photoluminescence (PL). At a heating temperature of 550℃, g-C3N4 nanocrystals are formed after 0.5 h and become more orderly as the heating time increases. The surface area of the g-C3N4 nanosheets significantly increases as the preparation time increases. The g-C3N4 prepared in 2.5 h shows the highest photocatalytic performance, decomposing completely 10 ppm RhB solution under xenon lamp irradiation for 2.0 h.

Key words: nanosheets, photocatalytic, heating time, Ar atmosphere

中图分类号:  (Semiconductor compounds)

  • 71.20.Nr
71.20.Rv (Polymers and organic compounds)