4.5 Article

Facile in-situ synthesis of 2D/3D g-C3N4/Cu2O heterojunction for high-performance photocatalytic dye degradation

期刊

MATERIALS RESEARCH EXPRESS
卷 7, 期 1, 页码 -

出版社

IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/ab6893

关键词

g-C3N4 nanosheets; Cu2O nanospheres; visible light response; charge separation; MO degradation

资金

  1. National Natural Science Foundation of China [41760300]
  2. Natural Science Foundation of Jiangxi Province [20171BAB206008]
  3. Scientific Research Fund of Jiangxi Provincial Education Department [GJJ180635, GJJ180596, GJJ180603]
  4. Doctoral Research Foundation of Jiangxi Science and Technology Normal University [2017BSQD008]

向作者/读者索取更多资源

Constructing heterojunction is a promising method to enhance visible-light utility and promote photogenerated e(-)-h(+) pairs separation of g-C3N4. Herein, the present work reported a g-C3N4/Cu2O heterojunction by a facile in situ synthetic strategy. The structure, morphology, optical, electrochemical and photocatalytic properties were investigated. The results showed the combination of g-C3N4 nanosheets and Cu2O nanospheres resulted in the close contact interface and wide visible-light response range, and fast separation of the photo-generated e(-)-h(+) pairs. The pristine g-C3N4 showed weak photocatalytic performance towards methyl orange (MO) under visible-light irradiation, compared with pristine g-C3N4, the photocatalytic degradation rate of optimized g-C3N4/Cu2O composite demonstrates the substantially enhanced photocatalytic activity, which showed no obvious loss after five repeated use. The enhanced performance was ascribed to the synergistic effect of good visible-light harvesting and enhanced separation rate of the charge carriers.

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