Heterojunction of UiO-66 and porous g-C3N4 for boosted photocatalytic removal of organic dye

Dawei Lan, Huiwen Zhu, Jianwen Zhang, Chengrui Xie, Fan Wang, Yueying Zheng, Zeyu Guo, Mengxia Xu, Tao Wu

Research output: Journal PublicationArticlepeer-review


In this research, a novel composite of typical Zr-based metal–organic frameworks (UiO-66) with porous graphitic carbon nitride (g-C3N4) was prepared by an in-situ preparation method. The g-C3N4/UiO-66 nanohybrids (CNU-0.5chieved almost 100 % efficiency in the degradation of RhB (60 mg/L, 100 mL) within 70 min under visible light, which was 6.46 and 10.56 times faster than that of pure g-C3N4 and UiO-66, respectively. The improved photocatalytic properties were attributed to the large surface area, enhanced optical adsorption ability and the creation of heterojunction between g-C3N4 and UiO-66. The formation of the heterojunction structure enhanced the photoelectron transfer efficiency and reduced the recombination of electron/hole pairs. Furthermore, the trapping experiments showed that •O2 , h+ and •OH were the active species in the photodegradation process, with •O2 playing a dominant role. This study offers valuable insights into the preparation of MOF-based photocatalysts with exceptional effectiveness for the removal of contaminants in wastewater treatment.

Original languageEnglish
Article number159623
JournalApplied Surface Science
Publication statusPublished - 15 May 2024


  • Heterojunction
  • Photocatalytic degradation
  • Porous g-CN
  • UiO-66
  • Wastewater treatment

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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