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

A4 Konferenspublikationer


Interna författare/redaktörer


Publikationens författare: J. J. Saarinen, D. Valtakari, R. Bollström, M. Stepien, J. Haapanen, J. M. Mäkelä, M. Toivakka
Redaktörer: NSTI
Publiceringsår: 2016
Förläggare: TechConnect
Moderpublikationens namn: Advanced manufacturing, electronics and microsystems : TechConnect briefs 2016
Seriens namn: Nanotech 2016 Conference Proceedings
Volym: 4
Artikelns första sida, sidnummer: 47
Artikelns sista sida, sidnummer: 50
eISBN: 9780997511734


Abstrakt

In this work ultraviolet A (UVA) light controlled photocatalytic activity of TiO2 nanoparticles is utilized on paper, paperboard, and plastic films for controlled wetting
and oxygen sensors for modified atmosphere packages (MAPs). A liquid flame spray (LFS) process is used for a large-area TiO2 nanoparticle deposition on natural fibre
based 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 atmosphere
packages. We believe that photocatalytically active surfaces with tailorable properties will find many applications in the near future, for example, with printed functional devices.


Nyckelord

Nanoparticle, Photocatalysis, TiO2, Wetting

Senast uppdaterad 2020-22-02 vid 05:34