Multistep loading of titania nanoparticles in the mesopores of SBA-15 for enhanced photocatalytic activity.
A multistep deposition of anatase nanoparticles was employed to incorporate high amounts of titania into the mesopores of SBA-15. Anatase nanoparticles were synthesized and deposited following the Acid Catalyzed Sol Gel method. With this method, the size of the anatase nanoparticles can be controlled and therefore, the titania loading into the mesopores of SBA-15 can be controlled. Through multistep deposition of anatase nanoparticles, a further increase of titania loading into the mesoporous channels can be obtained. For the degradation of Rhodamine-6G, the samples synthesized by multistep deposition showed an enhanced photocatalytic activity.
Laboratory of Adsorption and Catalysis, University of Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium.
K
K
De Witte
P
P
Cool
I
I
De Witte
L
L
Ruys
J
J
Rao
G
G
Van Tendeloo
E F
EF
Vansant
D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D008027:Light; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D010777:Photochemistry / Q000379:methods*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
D046911:Macromolecular Substances; C509969:SBA-15; C009495:titanium dioxide; D012822:Silicon Dioxide; D014025:Titanium