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Structural elucidation of core–shell TiO 2 nanomaterials for environmental pollutants removal: A focused mini review

Environmental Technology & Innovation, ISSN: 2352-1864, Vol: 19, Page: 101007
2020
  • 24
    Citations
  • 0
    Usage
  • 17
    Captures
  • 0
    Mentions
  • 84
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    24
    • Citation Indexes
      24
  • Captures
    17
  • Social Media
    84
    • Shares, Likes & Comments
      84
      • Facebook
        84

Review Description

Recently, core–shell structured titania (CS TiO 2 ) nanomaterials has garnered enormous research interest due to its improved visible light absorption capability and performance for various applications. While CS TiO 2 nanomaterials have shown satisfactory performance in other applications, its solar light photocatalytic performance is still far from excellent for environmental pollutants removal. This might be due to the poor understanding of mismatch between the various structural properties of CS TiO 2 and the contaminant we target for or scarcity of information about the atomic, nanocrystalline and electronic structure of CS TiO 2 and its correlation with photocatalytic performance. The present review provides an in-depth understanding of property–performance​ relationship, specifically for the removal of organic pollutants from environmental media, which will help further understand and optimize the photocatalytic properties of CS TiO 2 for enhancing its solar driven photocatalytic activity. The formation mechanism, structural properties, and photocatalytic performance of CS TiO 2 for environmental pollutants removal were reviewed, and it is established that an inclusive strategy is needed to address the key challenges in designing CS TiO 2 for environmental pollutants removal. The key challenges are the management of the location and concentration of defects states, optimization of surface to bulk defects ratio, and controlling the thickness of the shell. Conclusive prospective research needs for tuning the nanocrystalline structure and associated properties of CS TiO 2 are suggested accordingly.

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