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Novel 3d Multi-Layered Carbon Nitride/Indium Sulfide Heterostructure for Boosted Superoxide Anion Radical Generation and Enhanced Photocatalysis Under Visible Light

SSRN, ISSN: 1556-5068
2022
  • 1
    Citations
  • 153
    Usage
  • 0
    Captures
  • 0
    Mentions
  • 0
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    1
    • Citation Indexes
      1
  • Usage
    153
    • Abstract Views
      138
    • Downloads
      15

Article Description

Superoxide anion radical (⚫O2-) plays an important role in the selective photocatalytic degradation of recalcitrant organic pollutants in a complex aquatic environment. However, the yield of ⚫O2- is low due to the low charge utilization and limited visible light absorption. Here, we built a novel there-dimension (3D) multi-layered CNIS (carbon nitride/ indium sulfide) heterostructure via a facile molecular self-assembly route, in which morphological engineering and heterostructure construction were synergistically used. Results showed that the ordered sheet-to-sheet architecture of 3D multi-layered CNIS heterostructure with strong anisotropy accelerated exciton dissociation and provided abundant diffusion channels. Additionally, the formation of the heterostructure between CN and In2S3 via the possible In-N significantly shifted the conduction band minimum (CBM) and increased the density of band tail, facilitating high absorption of visible light and suppressing the charge carrier recombination. With these distinct features, the novel 3D multi-layered CNIS heterostructure generated ⚫O2-, exhibiting effective photocatalytic activity toward tetracycline (TC) with 83% removal in 10 minutes under visible light.

Bibliographic Details

Jingjing Zhang; Rajasekhar Balasubramanian; Yang Xuan

Elsevier BV

Multidisciplinary; Photocatalysis; morphology modulation; heterostructure; superoxide; degradation

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