Photocatalytic performance of silver-modified TiO2 embedded in poly(ethyl-acrylate-co-methyl metacrylate) matrix

Ágnes Veres, Judit Ménesi, Ádám Juhász, O. Berkesi, Nóra Ábrahám, Gabriella Bohus, A. Oszkó, Gábor Pótári, Norbert Buzás, László Janovák, I. Dékány

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The plasmonic Ag-TiO2 (with 0.5 wt% Ag) photocatalyst was prepared on P25 TiO2 surface. The presence of AgNPs on the titania was indicated by the UV-vis spectrum, which showed a plasmonic absorbance band in the visible range (λmax = 455 nm). XPS measurements suggested that Ag was in metallic (Ag) and in oxide forms on TiO2. Ag-TiO2 photocatalyst and TiO2 were embedded in [poly(ethyl acrylate-co-methyl methacrylate; p(EA-co-MMA)] copolymer to attain mechanically stable, photocatalytically active nanocomposite films. The photooxidation of ethanol was slower on the photocatalyst/polymer nanocomposites, but it could be significantly improved by irradiating them with UV light. The photoaging was applied as a post-preparation treatment to improve the photocatalytic activity of the nanocomposite films. Changed surface morphology and the partial destruction of the polymer were supported by AFM and FTIR results. Contact angle measurements were used to determine the surface free energies of the prepared and the photoaged nanocomposite films.

Original languageEnglish
Pages (from-to)207-217
Number of pages11
JournalColloid & Polymer Science
Volume292
Issue number1
DOIs
Publication statusPublished - 2014

Fingerprint

Nanocomposite films
Photocatalysts
acrylates
Silver
nanocomposites
silver
Polymers
matrices
Photooxidation
Methacrylates
Angle measurement
Ultraviolet radiation
Oxides
Free energy
Contact angle
Surface morphology
photooxidation
Nanocomposites
polymers
Ethanol

Keywords

  • Contact angle
  • Nanocomposite
  • Photocatalyst
  • Plasmonic
  • Polymer
  • Silver
  • TiO

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry
  • Colloid and Surface Chemistry

Cite this

Photocatalytic performance of silver-modified TiO2 embedded in poly(ethyl-acrylate-co-methyl metacrylate) matrix. / Veres, Ágnes; Ménesi, Judit; Juhász, Ádám; Berkesi, O.; Ábrahám, Nóra; Bohus, Gabriella; Oszkó, A.; Pótári, Gábor; Buzás, Norbert; Janovák, László; Dékány, I.

In: Colloid & Polymer Science, Vol. 292, No. 1, 2014, p. 207-217.

Research output: Contribution to journalArticle

Veres, Ágnes ; Ménesi, Judit ; Juhász, Ádám ; Berkesi, O. ; Ábrahám, Nóra ; Bohus, Gabriella ; Oszkó, A. ; Pótári, Gábor ; Buzás, Norbert ; Janovák, László ; Dékány, I. / Photocatalytic performance of silver-modified TiO2 embedded in poly(ethyl-acrylate-co-methyl metacrylate) matrix. In: Colloid & Polymer Science. 2014 ; Vol. 292, No. 1. pp. 207-217.
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