Photocatalytic evaluation of TiO₂/nylon systems prepared at different impregnation times

TiO₂/nylon fabrics were investigated for methanol degradation under UV light irradiation. TiO₂ Degussa P-25 was supported on nylon by immersing the nylon in sol–gel TiO₂ and silicone. The TiO₂ layers on the nylon were explored as a function of the time of immersion, impregnation agent and the type o...

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Bibliographic Details
Published in:Catalysis today 2011-03, Vol.161 (1), p.15-22
Main Authors: Mejía, M.I, Marín, J.M, Restrepo, G, Pulgarín, C, Kiwi, J
Format: Article
Language:English
Subjects:
Catalysis
catalytic activity
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
energy
Exact sciences and technology
fabrics
General and physical chemistry
infrared spectroscopy
irradiation
methanol
nylon
Photochemistry
photolysis
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
scanning electron microscopy
silicone
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
ultraviolet radiation
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Summary:TiO₂/nylon fabrics were investigated for methanol degradation under UV light irradiation. TiO₂ Degussa P-25 was supported on nylon by immersing the nylon in sol–gel TiO₂ and silicone. The TiO₂ layers on the nylon were explored as a function of the time of immersion, impregnation agent and the type of nylon fabric used. The energy diffuse spectroscopy (EDS) and infrared spectroscopy (ATR-FTIR) confirmed the presence of TiO₂ bonded to the nylon fabrics. Optical microscopy (OM) and scanning electron microscopy (SEM) show a more uniform distribution of TiO₂ on nylon fabrics prepared by immersion in sol–gel as compared to the silicone method. The most suitable photodegradation of gaseous methanol by TiO₂/nylon samples was obtained by sol–gel samples prepared by 24h immersion time.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2010.09.005