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Enhanced photocatalytic performance of S-scheme CdMoO 4 /CdO nanosphere photocatalyst

Journal of Materials Science & Technology, ISSN: 1005-0302, Vol: 179, Page: 198-207
2024
  • 70
    Citations
  • 0
    Usage
  • 15
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    70
    • Citation Indexes
      70
  • Captures
    15

Article Description

The photoabsorption capacity, the number of active sites, and the efficiency of carrier separation of photocatalysts are the main factors that restrict photocatalytic activity. Accordingly, a series of novel CdO-based S-scheme photocatalysts are prepared by a facile one-step precipitation-calcination method for the first time. Although CdO with a narrow band gap has no photocatalytic hydrogen evolution performance, the CdMoO 4 /CdO composite exhibits excellent photocatalytic activity. The photocatalytic hydrogen evolution (PHE) performance of the optimal ratio (3:4) is up to 7029 µmol g −1 h −1 under visible light irradiation. At the same time, the CdMoO 4 /CdO composite also shows excellent degradation activity of water pollutants, and the degradation efficiency for Tetracycline hydrochloride, Oxytetracycline, Norfloxacin, Reactive red 2, and Levofloxacin is 96.33%, 95.38%, 88.48%, 95.93%, and 77.30% under visible light irradiation for 90min, respectively. According to the experimental characterization and theoretical calculation analysis, the introduction of CdMoO 4 can be used to construct S-scheme heterojunction with CdO, improving the efficiency of charge separation as well as taking full advantage of redox ability, and hence improving superior photocatalysts performance. This work affords new insights into efficient PHE and antibiotic/dye degradation of CdO-based S-scheme photocatalysts.

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