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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2007, Volume 44, Issue 1,





The Templates Effect upon Some Titanium Dioxide-Phthalocyanine Hybride Production


Abstract:
The paper is a study regarding the obtaining of TiO2 nanostructured by the sol-gel reaction of tetraisopropoxytitanate in the presence of two templants, CTAB and DA. We are also interested in the effect of PTC on the capacity of nanostructuring. In the presence of CTAB nanostructured hibrids with interlamellar distance of 25,6Å were obtained, only in the absence of PTC. Nanostructured hibrids have been obtained in the case of DA addition, only in the presence of PTC with interlamellar distance of 32,7Å. For the nanostructured samples, the temperature with maximum decomposition speed of CATB and DA is the higest due to strong interaction between templants - TiO2. The SEM images put in evidence that the hibrids obtained in the presence of the templants are formed of submicronic units obtained during the sol-gel process. TiO2 prepared in the presence of CTAB catalizes the photo degradation of rodamine B (RB) in water. The samples obtained without CTAB followed by nanostructured hibrids present the most intense activity. The IR spectres evidenced that during irradiation, CTAB diffuses in water and stabilizes by micelles formed and RB becomes more stable at photodegradation. Keywords: templants, CTAB, TiO2, PTC, RB



Issue: 2007 Volume 44, Issue 1
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