Photocatalytic properties of TiO2-functionalized tiles: influence of ceramic substrate

Photocatalytic properties of TiO2-functionalized tiles: influence of ceramic substrate To confer self-cleaning properties to ceramic tiles through photocatalytic phenomena, TiO2 is deposited as thin films on their surface. However, photocatalytic properties could be strongly influenced by physico-chemical characteristics of the ceramic support. For this reason, this investigation was aimed to study the influence of porosimetric characteristics of different ceramic tiles on adsorption and photocatalytic activity induced by deposited TiO2 film in the presence of UV light. Experimental data in dark conditions showed that the porosity of the support strongly influenced the adsorption phenomenon of methylene blue (MB). Porosimetric characteristic of samples were tested by Hg intrusion. Higher porosity of the ceramic substrate increased the amount of MB adsorbed. On the contrary, photocatalytic tests have evidenced that a lower porosity of the support determined a higher MB discoloration rate. These results could be explained considering the MB internal diffusion phenomena limit the overall activity inside the porosimetric structure of functionalized tiles. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Photocatalytic properties of TiO2-functionalized tiles: influence of ceramic substrate

Loading next page...
 
/lp/springer_journal/photocatalytic-properties-of-tio2-functionalized-tiles-influence-of-skdqJQO5Kp
Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-014-1872-6
Publisher site
See Article on Publisher Site

Abstract

To confer self-cleaning properties to ceramic tiles through photocatalytic phenomena, TiO2 is deposited as thin films on their surface. However, photocatalytic properties could be strongly influenced by physico-chemical characteristics of the ceramic support. For this reason, this investigation was aimed to study the influence of porosimetric characteristics of different ceramic tiles on adsorption and photocatalytic activity induced by deposited TiO2 film in the presence of UV light. Experimental data in dark conditions showed that the porosity of the support strongly influenced the adsorption phenomenon of methylene blue (MB). Porosimetric characteristic of samples were tested by Hg intrusion. Higher porosity of the ceramic substrate increased the amount of MB adsorbed. On the contrary, photocatalytic tests have evidenced that a lower porosity of the support determined a higher MB discoloration rate. These results could be explained considering the MB internal diffusion phenomena limit the overall activity inside the porosimetric structure of functionalized tiles.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Dec 20, 2014

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off