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Titania nanotubes decorated with cu(I) and cu(II) oxides: antibacterial and ethylene scavenging functions to extend the shelf life of bananas

Riahi, Z ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1021/acssuschemeng.1c01348
  3. Publisher: American Chemical Society , 2021
  4. Abstract:
  5. Titanium nanotubes (TNTs) were prepared using TiO2 and decorated with CuO and Cu2O to have photocatalytic efficiency under visible light. TNTs decorated with copper oxides (TNT-CuO and TNT-Cu2O) were confirmed by the elemental mapping and XPS results. Unlike TNT and TiO2, TNT-CuO and TNT-Cu2O showed higher photocatalytic activity, such as antimicrobial and ethylene scavenging activities under visible light. Between the two types of copper oxide-decorated TNTs, TNT-Cu2O showed photocatalytic activity higher than that of TNT-CuO. The ethylene scavenging activity of TNT-Cu2O was about 40% higher than that of TNTs and TNT-CuO. The photocatalytic activity of titanium-based nanoparticles was compared through fresh banana packaging. Bananas packaged with TiO2 and TNTs showed higher weight loss and decreased firmness. In contrast, TNT-Cu2O-packaged bananas maintained the fruit's firmness, reduced weight loss, and delayed browning, maintaining the freshness for 7 days. TNT-Cu2O is likely to be used as an effective ethylene scavenging material to extend the shelf life of fruits and vegetables. © 2021 American Chemical Society
  6. Keywords:
  7. Aliphatic compounds ; Ethylene ; Fruits ; Light ; Nanotubes ; Oxide minerals ; Photocatalytic activity ; Titanium ; Titanium dioxide ; Elemental mapping ; Fruits and vegetables ; Higher weight ; Photocatalytic efficiency ; Scavenging activities ; Titania nanotubes ; Titanium-based ; Visible light ; Copper oxides
  8. Source: ACS Sustainable Chemistry and Engineering ; Volume 9, Issue 19 , 2021 , Pages 6832-6840 ; 21680485 (ISSN)
  9. URL: https://pubs.acs.org/doi/abs/10.1021/acssuschemeng.1c01348