Roll-to-roll application of photocatalytic TiO2 nanoparticles for printed functionality

Jarkko Saarinen, Dimitar Valtakari, R. Bollström, M. Stepien, J. Haapanen, J. M. Mäkelä, Martti Toivakka

Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review


In this work ultraviolet A (UVA) light controlled photocatalytic activity of TiO2 nanoparticles is utilized on paper, paperboard, and plastic films for controlled wettingand oxygen sensors for modified atmosphere packages (MAPs). A liquid flame spray (LFS) process is used for a large-area TiO2 nanoparticle deposition on natural fibrebased substrates such as paperboard that results in a superhydrophobic surface. Controlled wettability is achieved using an UVA light activation that converts the surface to hydrophilic whereas an oven heat treatment recovers the initial superhydrophobicity. On the other hand, a TiO2 nanoparticles with methylene blue (MB) dye is used to detect the presence of oxygen in modified atmospherepackages. We believe that photocatalytically active surfaces with tailorable properties will find many applications in the near future, for example, with printed functional devices.
Original languageUndefined/Unknown
Title of host publicationAdvanced manufacturing, electronics and microsystems : TechConnect briefs 2016
Editors NSTI
ISBN (Electronic)9780997511734
Publication statusPublished - 2016
MoE publication typeA4 Article in a conference publication
EventTechConnect World Innovation Conference - TechConnect World Innovation Conference & Expo – Nanotech 2016
Duration: 22 May 201625 May 2016


ConferenceTechConnect World Innovation Conference


  • Nanoparticle
  • Photocatalysis
  • TiO2
  • Wetting

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