HIGHLY ACTIVE PHOTOCATALYTIC COATINGS FOR TEMPERATURE SENSITIVE SUBSTRATES BASED ON TITANIUM OXIDE AND ZINC OXIDE PREPARED BY ATMOSPHERIC PRESSURE PECVD AND SOL-GEL DEPOSITION

1 GERULLIS Sven
Co-authors:
1 BEIER Oliver 1 PFUCH Andreas 1 GRUENLER Bernd
Institution:
1 INNOVENT e.V. Technology Development Jena, Pruessingstrasse 27B, D-07745 Jena, Germany, EU ob@innovent-jena.de
Conference:
9th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 18th - 20th 2017
Proceedings:
Proceedings 9th International Conference on Nanomaterials - Research & Application
Pages:
302-307
ISBN:
978-80-87294-81-9
ISSN:
2694-930X
Published:
8th March 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
18 views / 12 downloads
Abstract

In our investigations we prepared two different kinds of oxide coatings aiming for highly active photocatalytic properties and moreover deposition conditions, which could make them useful potentially also for temperature sensitive substrate materials. The first ones are titanium oxide thin films created by PECVD under atmospheric pressure conditions, Secondly, zinc oxide coatings were created by sol-gel technique via dip-coating. Investigations on the morphology (SEM), layer thickness (profilometry), and photocatalytic properties (decomposition of stearic acid after irradiation) were conducted. The results show the possibility to obtain layers with photocatalytic properties comparable with commercially available products even without any additional substrate heating during the plasma deposition or a thermal post treatment. However, thermal post annealing at 450 °C or flash lamp annealing can further improve this photocatalytic effect. Furthermore, first experiments showed that these coatings possess strong antimicrobial properties (towards bacteria and fungi).

Keywords: atmospheric pressure PECVD, sol-gel deposition, photocatalytic thin films, antimicrobial properties, titanium oxide, zinc oxide, temperature sensitive materials
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