Article (Scientific journals)
P-doped titania xerogels as efficient UV-visible photocatalysts
Bodson, Céline; Pirard, Sophie; Pirard, René et al.
2014In Journal of Materials Science and Chemical Engineering, 2, p. 17-32
Peer reviewed
 

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Keywords :
TiO2 xerogel; Phosphorus doping; Photocatalysis; p-nitrophenol degradation; sol-gel
Abstract :
[en] In the present study, sol-gel process is used to synthesize P-doped TiO2 xerogels by the cogelation method of a functionalized P alkoxide, (NH2-(CH2)2-NH-(CH2)2-P(O)-(OC2H5)2) with Ti(OC3H7)4 in either 2-methoxyethanol or isopropanol. The phosphorus-doping improved the thermal stability of titania and decreased the phase transformation of anatase into rutile. This modification by phosphorus shifted the absorption edge of titania to the visible region as proved by Diffuse reflectance measurements, and thus offers the possibility to produce visible light effective TiO2 photocatalyst. The excellent photocatalytic activity of P-doped TiO2 xerogels compared to pure TiO2 could be explained by its high surface area and small TiO2-anatase crystallite size. From these results, it was proved by using three different models that phosphorus intrinsically influences the photocatalytic activity.
Disciplines :
Chemical engineering
Chemistry
Materials science & engineering
Author, co-author :
Bodson, Céline ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces
Pirard, Sophie ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces
Pirard, René;  Université de Liège - ULiège > Chimie appliquée > Génie Chimique
Tasseroul, Ludivine ;  Université de Liège - ULiège > Chimie et bio-industries > Bio-industries
Bied, Catherine;  Institut Charles Gerhardt de Montpellier
Wong Chi Man, Michel;  Institut Charles Gerhardt de Montpellier
Heinrichs, Benoît ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces
Lambert, Stéphanie  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces
Language :
English
Title :
P-doped titania xerogels as efficient UV-visible photocatalysts
Publication date :
2014
Journal title :
Journal of Materials Science and Chemical Engineering
ISSN :
2327-6045
eISSN :
2327-6053
Publisher :
Scientific Research
Volume :
2
Pages :
17-32
Peer reviewed :
Peer reviewed
Available on ORBi :
since 18 November 2014

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