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Titania Gold Composite: Effect of Illumination on Size of Gold Nanoparticles with Consequent Implication on Photocatalytic Water Splitting

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Title Titania Gold Composite: Effect of Illumination on Size
of Gold Nanoparticles with Consequent Implication
on Photocatalytic Water Splitting
 
Creator Hippargi, Girivyankatesh
Maddigapu, Pratap Reddy
Labhsetwar, Nitin
Rayalu, Sadhana
 
Subject Chemistry, Chemical Technology
Energy Sources
Physics
 
Description This work deals with the study of photodeposition (PD) of gold nanoparticles (AuNPs) on TiO2
by using different illumination sources, Medium pressure Mercury lamp (ML), Solar Simulator equipped
with AM 1.5 (SL) and Tungsten lamp (WL). Different particle size of AuNPs on TiO2 were obtained by photodeposition
method under different illumination sources, which clearly proves the influence of light source
on the synthesis of Au–TiO2. The plasmonic activity of Au–TiO2 photocatalyst for water splitting reaction
was observed to be strongly influenced by the particle size of Au as well as illumination source. Amongst the
three different illumination sources used, smallest particle size for AuNP–TiO2 were observed under ML followed
by SL and WL, as revealed by TEM analysis. Different illumination sources were also investigated to
evaluate the activity of Au–TiO2 samples thus prepared under different illumination conditions. The order of
hydrogen evolution rate (HER) observed for Au–TiO2 with different source of illuminations is ML > SL >
WL. The highest HER of 1709 μmol/h was observed for Au–TiO2, which was synthesized and evaluated
under ML irradiation. This may be explained on the basis of reduced catalytic activity and photothermal
effect of Au nanoparticles with increasing particle size.
 
Publisher Spriger
 
Date 2018-02-27
 
Type Article
NonPeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1126/1/Titania%20Gold%20Composites%20effect%20of%20illumnation%20on%20size%20of%20gold%20nanoparticles.pdf
Hippargi, Girivyankatesh and Maddigapu, Pratap Reddy and Labhsetwar, Nitin and Rayalu, Sadhana (2018) Titania Gold Composite: Effect of Illumination on Size of Gold Nanoparticles with Consequent Implication on Photocatalytic Water Splitting. Russian Journal of Physical Chemistry B, 11 (6). pp. 1002-1011. ISSN 1990-7931
 
Relation https://link.springer.com/article/10.1134%2FS1990793117060215
http://neeri.csircentral.net/1126/