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Synthesis and characterization of Y(3+)-doped TiO(2) nanocomposites for photocatalytic applications

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Title Synthesis and characterization of Y(3+)-doped TiO(2) nanocomposites for photocatalytic applications
 
Creator NARAYAN, H
ALEMU, H
MACHELI, L
THAKURDESAI, M
RAO, TKG
 
Subject visible-light
degradation
nanoparticles
sensitization
electrodes
size
film
dye
 
Description The TiO(2)center dot[Y(2)O(3)](x) (x = 0.1-0.4) nanocomposites (NCs) with an average particle size of 74 nm were prepared by the method of chemical co-precipitation followed by hydrolysis (CPH). Their visible light photocatalytic activity was investigated for the degradation of congo red (CR) dye. All NCs showed improved degradation as compared to the polycrystalline samples of similar compositions prepared by the solid-state reaction (SSR) route (average particle size of a few micrometers), as well as to the pure TiO(2). The better photocatalytic activity of the NCs was attributed to their smaller particle size. Another comparison of the results with those obtained with Zn(2+)/Fe(3+) ions co-doped TiO(2) NCs, under similar experimental conditions, revealed that in the Y(3+)-doped NCs, particle size might not be the only factor responsible for the improved photocatalytic properties. It was concluded that the Y(3+) ion-mediated suppression of the unwanted e(-)/h(+) recombination could be the possible factor leading to additional enhancement.
 
Publisher IOP PUBLISHING LTD
 
Date 2011-08-04T01:15:34Z
2011-12-26T12:54:28Z
2011-12-27T05:42:24Z
2011-08-04T01:15:34Z
2011-12-26T12:54:28Z
2011-12-27T05:42:24Z
2009
 
Type Article
 
Identifier NANOTECHNOLOGY, 20(25), -
0957-4484
http://dx.doi.org/10.1088/0957-4484/20/25/255601
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9196
http://hdl.handle.net/10054/9196
 
Language en