TY - JOUR
T1 - Enhancement of TiO2 photocatalytic activity by structuring the photocatalyst film as photonic sponge
AU - Carbonell Llopis, Esther
AU - Ramiro-Manzano, Fernando
AU - Rodríguez, Isabelle
AU - Corma, Avelino
AU - Meseguer, Francisco
AU - García, Hermenegildo
PY - 2008
Y1 - 2008
N2 - A TiO2 film having "photonic sponge" architecture (ps-TiO2) has been prepared using titania Degussa P25 nanoparticles that have been infiltrated into a template obtained through the arrangement of a mixture of different size latex spheres. The resulting photonic sponge exhibits 3.3 fold higher initial photocatalytic degradation rate for succinonitrile disappearance than analogous films of the same thickness made of unstructured P25 TiO2 nanoparticles. When corrected for the three fold lower mass of the ps-TiO2 films with respect to more dense P25, the enhancement of the photocatalytic activity by the photonic sponge morphology for the same mass of photocatalyst is about one order of magnitude. It was also observed that films of photonic sponge of 3 μm depth are more efficient than thicker films (5 and 7 μm).
AB - A TiO2 film having "photonic sponge" architecture (ps-TiO2) has been prepared using titania Degussa P25 nanoparticles that have been infiltrated into a template obtained through the arrangement of a mixture of different size latex spheres. The resulting photonic sponge exhibits 3.3 fold higher initial photocatalytic degradation rate for succinonitrile disappearance than analogous films of the same thickness made of unstructured P25 TiO2 nanoparticles. When corrected for the three fold lower mass of the ps-TiO2 films with respect to more dense P25, the enhancement of the photocatalytic activity by the photonic sponge morphology for the same mass of photocatalyst is about one order of magnitude. It was also observed that films of photonic sponge of 3 μm depth are more efficient than thicker films (5 and 7 μm).
UR - http://www.scopus.com/inward/record.url?scp=48549099819&partnerID=8YFLogxK
U2 - 10.1039/b801954a
DO - 10.1039/b801954a
M3 - Article
AN - SCOPUS:48549099819
SN - 1474-905X
VL - 7
SP - 931
EP - 935
JO - Photochemical and Photobiological Sciences
JF - Photochemical and Photobiological Sciences
IS - 8
ER -