Cold-Setting Inkjet Printed Titania Patterns Reinforced by Organosilicate Binder

A hybrid organo-silica sol was used as a binder for reinforcing of commercial titanium dioxide nanoparticles (Evonic P25) deposited on glass substrates. The organo-silica binder was prepared by the sol-gel process and mixtures of titania nanoparticles with the binder in various ratios were deposited...

Full description

Saved in:
Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2015-09, Vol.20 (9), p.16582-16603
Main Authors: Králová, Marcela, Dzik, Petr, Kašpárek, Vít, Veselý, Michal, Cihlář, Jaroslav
Format: Article
Language:English
Subjects:
direct patterning
Glass substrates
Ink jet printers
material printing
Nanoparticles
Nanoparticles - chemistry
Photocatalysis
Screen printing
silica binder
Silicon Dioxide - chemistry
titania
Titanium
Titanium - chemistry
Ultraviolet Rays
UV-curing
Water treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A hybrid organo-silica sol was used as a binder for reinforcing of commercial titanium dioxide nanoparticles (Evonic P25) deposited on glass substrates. The organo-silica binder was prepared by the sol-gel process and mixtures of titania nanoparticles with the binder in various ratios were deposited by materials printing technique. Patterns with both positive and negative features down to 100 µm size and variable thickness were reliably printed by Fujifilm Dimatix inkjet printer. All prepared films well adhered onto substrates, however further post-printing treatment proved to be necessary in order to improve their reactivity. The influence of UV radiation as well as of thermal sintering on the final electrochemical and photocatalytic properties was investigated. A mixture containing 63 wt % of titania delivered a balanced compromise of mechanical stability, generated photocurrent density and photocatalytic activity. Although the heat treated samples yielded generally higher photocurrent, higher photocatalytic activity towards model aqueous pollutant was observed in the case of UV cured samples because of their superhydrophilic properties. While heat sintering remains the superior processing method for inorganic substrates, UV-curing provides a sound treatment option for heat sensitive ones.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules200916582