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Photostable self-cleaning cotton by a copper(II) porphyrin/TiO2 visible-light photocatalytic system

Shabana Afzal, Walid A. Daoud, Steven J. Langford

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Thin films of meso-tetra(4-carboxyphenyl)porphyrinato copper(II) (CuTCPP) in conjunction with anatase TiO2 have been formed on cotton fabric. Their self-cleaning properties have been investigated by conducting photocatalytic degradation of methylene blue, coffee and wine stains under visible-light irradiation. CuTCPP/TiO2-coated cotton fabrics showed superior self-cleaning performance when compared to bare TiO2-coated cotton. Furthermore, CuTCPP/TiO2-coated fabrics showed significant photostability under visible-light as compared to free base TCPP/TiO 2-coated fabrics. The fabrics were characterized by FESEM, XRD and UV-vis spectroscopy. An insight into the mechanistic aspects of the CuTCPP/TiO2 photocatalysis is also discussed. Visible-light driven self-cleaning cotton based on copper(II) porphyrin/TiO2 catalyst exhibits significant potential in terms of stability and reproducibility for self-cleaning applications. © 2013 American Chemical Society.
Original languageEnglish
Pages (from-to)4753-4759
JournalACS Applied Materials and Interfaces
Volume5
Issue number11
DOIs
Publication statusPublished - 12 Jun 2013

Research Keywords

  • dye-sensitization
  • photocatalysis
  • porphyrin
  • self-cleaning textiles
  • titania
  • visible-light

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