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Acid–base and photocatalytic properties of TiO-based nanomaterials

Applied Nanoscience (Switzerland), ISSN: 2190-5517, Vol: 12, Issue: 3, Page: 691-700
2022
  • 9
    Citations
  • 0
    Usage
  • 14
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    9
    • Citation Indexes
      9
  • Captures
    14

Article Description

The acid–base properties and photocatalytic activity for the degradation of Congo Red and methylene blue of TiO-based nanomaterials (commercial TiO, sulfonated TiO (TiO-S) and nanocomposites TiO and TiO-S with carbon nanotubes) have been studied. The results indicated the important role of the acid–base properties of catalysts for influencing on the efficacy of photocatalytic processes. A correlation between the photocatalytic activity and the strength of the acid sites of the catalysts has been observed for the photodegradation of methylene blue. Sulphur-free samples (TiO P25 and TiO-MWCNT), which are superior in acid strength then sulphur-containing catalysts, shown higher activity (99–100%) for methylene blue photodegradation. Sulphur-containing (TiO-S and TiO-S-MWCNT) nanocomposites with a bifunctional acid–base nature were the most effective photocatalysts in a Congo Red photodegradation process. This was due to the presence of both acid and base functional groups in Congo Red dye. The obtained results suggested the crucial role of methylene blue and Congo Red adsorption on the surface of photocatalysts as an important stage for the effective organic dyes photodegradation.

Bibliographic Details

Olena I. Yanushevska; Tetiana A. Dontsova; Nina V. Vlasenko; German M. Telbis; Evhen V. Leonenko; Olga Z. Didenko; Vladimir G. Prozorovich; Andrei I. Ivanets

Springer Science and Business Media LLC

Biochemistry, Genetics and Molecular Biology; Physics and Astronomy; Materials Science; Chemistry; Engineering

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