Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31152
Title: Photocatalytic activity and photo-induced hydrophilicity of mesoporous TiO2 thin films coated on aluminum substrate
Authors: Ho, W
Yu, JC
Lee, S 
Keywords: Hydrophilicity
Mesoporous
Photocatalytic activity
Thin films
Titanium dioxide
Issue Date: 2007
Publisher: Elsevier
Source: Applied catalysis B : environmental, 2007, v. 73, no. 1-2, p. 135-143 How to cite?
Journal: Applied catalysis B : environmental 
Abstract: Mesoporous TiO2 thin films were prepared on aluminum substrate via the reverse micellar method (RM-TiO2) and sol-gel method (SG-TiO2), respectively. It was found that the mesoporous RM-TiO2 thin films exhibited a better photocatalytic performance than that of SG-TiO2 in the degradation of acetone in air and photo-induced hydrophilicity. This was attributed to the fact that the RM-TiO2 thin films had higher specific surface area and porosity than that of SG-TiO2. The larger surface-to-volume ratio of mesoporous RM-TiO2 thin films can serve as a more efficient transport path for gaseous reactants and products in photocatalytic reactions, thus improving the photocatalytic activity. The photocatalytic performance and hydrophilicity of RM-TiO2 thin films coated on different substrates were also compared. The aluminium-supported samples showed a slower photocatalytic rate than those on quartz and stainless steel in the degradation of acetone because aluminum ions diffused from the substrate and acted as a charge recombination center. However, the hydrophilic property of the TiO2/Al sample was superior to those on quartz and stainless steel substrates, probably due to its higher surface roughness and hydroxyl content.
URI: http://hdl.handle.net/10397/31152
ISSN: 0926-3373
EISSN: 1873-3883
DOI: 10.1016/j.apcatb.2006.06.019
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

32
Last Week
0
Last month
0
Citations as of Dec 7, 2017

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
0
Citations as of Dec 9, 2017

Page view(s)

42
Last Week
1
Last month
Checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.