Characterization of TiO2/polyelectrolyte thin film fabricated by a layer-by-layer self-assembly method

Jin Ho Kim, Seimei Shiratori

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Multilayers thin films consisted of TiO2 nanoparticles and oppositely charged polyelectrolytes were fabricated by layer-by-layer self-assembly method and their properties were characterized. At pH 2.0, TiO2 nanoparticles were maximally deposited with poly(sodium 4-styrenesulfonate) (PSS) and the thickness and the surface roughness of film assembled with poly(acrylic acid) (PAA) were largest because of the loopy structure of PAA in acidic solution. On the other hand, the thin film prepared with poly(vinylsulfonic acid-sodium salt) (PVS) showed the high deposition of TiO2, lowest surface roughness, high refractive index (n = 2.1) at 632nm, and high transmittance in visible range. In addition, this film composed of anatase nanoparticles showed good photocatalytic property by decomposing methyl orange molecules with UV irradiation.

Original languageEnglish
Pages (from-to)7588-7592
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number10
DOIs
Publication statusPublished - 2005 Oct 11

Keywords

  • Layer-by-layer self-assembly
  • Polyelectrolyte
  • Thin film
  • TiO nanoparticles

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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