Reference : P-doped titania xerogels as efficient UV-visible photocatalysts
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Chemical engineering
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/174055
P-doped titania xerogels as efficient UV-visible photocatalysts
English
Bodson, Céline [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces >]
Pirard, Sophie mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces >]
Pirard, René [Université de Liège - ULg > Chimie appliquée > Génie Chimique > >]
Tasseroul, Ludivine mailto [Université de Liège - ULg > Chimie et bio-industries > Bio-industries >]
Bied, Catherine [Institut Charles Gerhardt de Montpellier > > > >]
Wong Chi Man, Michel [Institut Charles Gerhardt de Montpellier > > > >]
Heinrichs, Benoît mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces >]
Lambert, Stéphanie mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces >]
2014
Journal of Materials Science and Chemical Engineering
Scientific Research
2
17-32
Yes
International
2327-6045
2327-6053
[en] TiO2 xerogel ; Phosphorus doping ; Photocatalysis ; p-nitrophenol degradation ; sol-gel
[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.
http://hdl.handle.net/2268/174055

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