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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
 
Subject Chemistry, Chemical Technology
Physics
Materials Science
 
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) & 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.
 
Date 2017-03-23
 
Type Conference or Workshop Item
PeerReviewed
 
Format text/html
 
Identifier http://neeri.csircentral.net/875/1/poster%20for%202nd%20sun%20workshop.pptx
Hippargi, Girivyankatesh (2017) Titania Gold composite: Effect of Illumination on size of gold nanoparticles with consequent implication on photocatalytic water splitting�. In: Solar Energy Utilization (SUN) for Sustainable Development, 23-24, March 2017, CSIR-NEERI.
 
Relation http://neeri.csircentral.net/875/