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Nanostructured TiO2 modified by perfluoropolyethers: Gas phase photocatalytic activity

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Abstract

A high-molecular-weight perfluoropolyether (PFPE-YR) and a perfluoropolyether containing ammonium phosphate (PFPE-F10) have been evaluated as fluorinated coating for high-surface-area titanium oxides. Coated nano-TiO2 shows hydrophobic properties and excellent buoyancy on water. In addition to photoactivity toward the degradation of toluene in gas phase, specific trial analyses have been completed to estimate the modified titanium oxide features. Brunauer–Emmett–Teller (BET) analysis for the surface area determination, ultraviolet-visible spectroscopy (UV-Vis) for the material electronic band gap, high-resolution transmission electron microscopy (HRTEM), x-ray diffraction (XRD), and x-ray photoelectron spectroscopy (XPS) for the morphology, structure, and surface composition, respectively, and water contact angle and infrared (IR) analysis have been performed to estimate the wettability and stability of coated titanium.

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Authors and Affiliations

  1. Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, via Golgi 19, 20133, Milano, Italy

    Claudia L. Bianchi, Silvia Ardizzone & Giuseppe Cappelletti

  2. Dipartimento di Chimica IFM & NIS-Interdept. Excellence Centre, Università di Torino, via Pietro Giuria, 7, 10125, Torino, Italy

    Giuseppina Cerrato

  3. Dipartimento di Chimica, Materiali e Ingegneria Chimica, Politecnico di Milano, via Mancinelli 7, 20131, Milano, Italy

    Walter Navarrini & Maurizio Sansotera

Authors
  1. Claudia L. Bianchi
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  2. Silvia Ardizzone
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  3. Giuseppe Cappelletti
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  4. Giuseppina Cerrato
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  5. Walter Navarrini
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  6. Maurizio Sansotera
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Correspondence to Claudia L. Bianchi.

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Bianchi, C.L., Ardizzone, S., Cappelletti, G. et al. Nanostructured TiO2 modified by perfluoropolyethers: Gas phase photocatalytic activity. Journal of Materials Research 25, 96–103 (2010). https://doi.org/10.1557/JMR.2010.0008

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  • DOI: https://doi.org/10.1557/JMR.2010.0008

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