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EDTA promoted Cr(VI) reduction in semiconductor/insulator photocatalyst: Performance, mechanistic insight and DFT calculation

Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN: 0927-7757, Vol: 664, Page: 131187
2023
  • 4
    Citations
  • 0
    Usage
  • 5
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    4
    • Citation Indexes
      4
  • Captures
    5
  • Mentions
    1
    • News Mentions
      1
      • News
        1

Most Recent News

Study Data from Guilin University of Electronic Technology Update Understanding of Photocatalytics [Edta Promoted Cr(Vi) Reduction In Semiconductor/insulator Photocatalyst: Performance, Mechanistic Insight and Dft Calculation]

2023 AUG 30 (NewsRx) -- By a News Reporter-Staff News Editor at Biotech News Daily -- Current study results on Nanotechnology - Photocatalytics have been

Article Description

Here, a novel CdS/BaCO 3 composite catalyst was fabricated by a simple chemical precipitation method. The optical and photoelectrochemical characterizations suggest that the charge separation and transportation in CdS/BaCO 3 are significantly enhanced, compared to that in CdS. As a results, the optimized CdS/BaCO 3 shows superior hexavalent chromium (Cr(VI)) degradation rates, which is 76.4 times higher than that of CdS. More interestingly, the adding of trace EDTA (Ethylene Diamine Tetraacetic Acid) further promote the photocatalytic Cr(VI) removal ratio of CdS/BaCO 3 to 99 %, at a significantly enhanced rate (0.247/min) 236.87 and 114.22 times more than that of CdS and EDTA. In combination with DFT theoretical calculations, the analysis on band levels suggests that under visible light, the interband states of Ba 2+ of BaCO 3 inhibit the recombination of electron-hole pairs in CdS and improves the electron transmission efficiency and the formation of a complex between EDTA and the composite catalyst, which increase of active groups and the generation of H 2 O 2 in the solution for boosting Cr(VI) reduction. The design of small-molecule-promoted insulators/semiconductor heterojunctions for enhancing Cr(VI) degradation offers broad application prospects in environmental remediation.

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