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p-n Junction catalysis in action: Boosting norfloxacin photodegradation with ZIF-67-based Co 3 O 4 wrapped in MoS 2 with surface functionalized graphene quantum-dot

Applied Surface Science, ISSN: 0169-4332, Vol: 653, Page: 159374
2024
  • 4
    Citations
  • 0
    Usage
  • 3
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    4
  • Captures
    3
  • Mentions
    1
    • News Mentions
      1
      • 1

Most Recent News

Recent Findings from Chonnam National University Has Provided New Information about Photocatalytics (P-n Junction Catalysis In Action: Boosting Norfloxacin Photodegradation With Zif-67-based Co3o4 Wrapped In Mos2 With Surface Functionalized ...)

2024 MAY 02 (NewsRx) -- By a News Reporter-Staff News Editor at South Korea Daily Report -- Research findings on Nanotechnology - Photocatalytics are discussed

Article Description

The primary challenge in photocatalytic application is to address the inefficiency in exploiting the photo-induced charge carriers. The dynamic behaviors of photogenerated carriers can be controlled through an internal electric field by building a p-n heterojunction. In this respect, p-n heterojunctions constructed from zeolitic imidazolate frameworks (ZIFs) with further surface functionalization are uniquely active and can increase the charge separation due to a favorable band structure. Thus, the present work demonstrates the preparation of an excellent visible-light absorbing photocatalyst based on a Co 3 O 4 from ZIF-67 wrapped with MoS 2 and functionalized with graphene quantum dots (GQDs), which is evaluated for the photodegradation of norfloxacin. Under visible light irradiation, the as-designed GQDs-functionalized MoS 2 @Co 3 O 4 p-n heterojunction photocatalyst outperforms the individual MoS 2 and Co 3 O 4 semiconductors. The remarkable degradation efficiency is mostly due to the formation of a p-n heterojunction between MoS 2 and the ZIF-67-based Co 3 O 4. The photocatalytic mechanism of the as-designed system is deduced from reactive species trapping studies. This study sheds light on the design of a photocatalytic system based on ZIF-67, and on the effect of surface functionalization, thereby expanding the potential practical application of these materials in the field of environmental remediation.

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