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.com
Volume 6, Issue 4 (Suppl)
J Material Sci Eng, an open access journal
ISSN: 2169-0022
Materials Congress 2017
June 12-14, 2017
June 12-14, 2017 Rome, Italy
Materials Science and Engineering
9
th
World Congress on
Visible light driven photo-active nano Ag-TiO
2
for coating applications
J L Cheng
1
, Y L Seow
1
, B S A Sharifah Fatanah
1
, H Miao
1
, B K Tay
1
and
K Loke
2
1
Temasek Polytechnic, Singapore
2
Singapore Technologies Kinetics Ltd., Singapore
I
n recent times, the use of TiO
for photo catalytic purposes has attracted much attention. This is mainly due to TiO
2
having
many advantages over other photo catalysts. It has been proven to be nontoxic, biologically inert, physically and chemically stable
against corrosion. Nevertheless, some characteristics limit the practical application of TiO
2
. TiO
2
is known to exhibit photocatalytic
properties only in the presence of UV light radiation. These limit the applications of TiO
2
as coating materials since the sunlight only
consists of 3% to 5%UV light. Visible light driven photo catalytic nano Ag-TiO
2
was successfully synthesized using a low temperature,
facile electro less deposition technique. Various wt% of nano Ag was deposited onto commercial Degussa P25 TiO
2
nanopowders. The
photo catalytic effect of the synthesized powders was studied using the UV-Vis spectrometer on the degradation profile of methylene
blue (MB). Contact angle measurement was also done on Ag-TiO
2
coated steel plate to evaluate its hydrophilicity/self-cleaning effect.
The results showed significant improvements in MB degradation under visible light compared to commercial TiO
2
nano powders. The
amount of deposited Ag on TiO
2
(1-10wt %) was also found to have negligible effects on its degradation profile. Super hydrophilicity
(self- cleaning) effects were also observed for the coated surface compared to non- coated surface.
Biography
J L Cheng completed his PhD in Materials Science and Engineering from Nanyang Technological University, Singapore and was awarded with the Ian Fergusson
Fellowship at the Georgia Institute of Technology, USA. His expertise includes synthesis and characterization of nano materials for coating, thermal insulation and
grease absorption applications. He is currently a Lecturer and Principal Investigator of several government agencies funded projects at the Temasek Polytechnic,
Singapore.
jlcheng@tp.edu.sgJ L Cheng et al., J Material Sci Eng 2017, 6:4(Suppl)
DOI: 10.4172/2169-0022-C1-068