Article (Scientific journals)
Degradation of p-nitrophenol and bacteria with TiO2 xerogels sensitized in situ with tetra(4-carboxyphenyl)porphyrins
Tasseroul, Ludivine; Lambert, Stéphanie; Eskenazi, David et al.
2013In Journal of Photochemistry and Photobiology A: Chemistry, 272, p. 90-99
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Keywords :
Escherichia coli; Lactobacillus rhamnosus; Photocatalytic degradation; Porphyrin sensitization; Sol-gel synthesis
Abstract :
[en] TiO2-based materials doped with porphyrins have been prepared using a sol-gel process. To stabilize the TiO2-dye interactions, free metal tetra(4-carboxyphenyl)porphyrin and nickel tetra(4-carboxyphenyl) porphyrin were introduced in situ into the TiO2 matrix during the sol-gel process rather than by grafting. Samples were thoroughly characterized by TEM, X-ray diffraction, FT-IR, DR-UV/vis and their texture has been examined by nitrogen adsorption-desorption at 77 K. The low thermal treatment allows obtaining anatase-TiO2 particles with high specific surface area without porphyrin degradation. A significant improvement of the photoactivity under visible light of porphyrin doped-TiO2 xerogels was observed for p-nitrophenol and for bacterial degradation. © 2013 Elsevier B.V. All rights reserved.
Disciplines :
Chemistry
Materials science & engineering
Microbiology
Author, co-author :
Tasseroul, Ludivine ;  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 - Génie catalytique
Eskenazi, David ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique
Amoura, Makhlouf ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces
Páez, Carlos Alberto;  Laboratoire de Génie Chimique, B6a, Université de Liège, B-4000 Liège, Belgium
Hiligsmann, Serge ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie et microbiologie industrielles
Thonart, Philippe ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie et microbiologie industrielles
Heinrichs, Benoît ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces
Language :
English
Title :
Degradation of p-nitrophenol and bacteria with TiO2 xerogels sensitized in situ with tetra(4-carboxyphenyl)porphyrins
Publication date :
2013
Journal title :
Journal of Photochemistry and Photobiology A: Chemistry
ISSN :
1010-6030
Publisher :
Elsevier, Netherlands
Volume :
272
Pages :
90-99
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 November 2013

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