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1586881 
Journal Article 
Efficient Degradation of Methyl Orange Over TiO2 and Poly(styrene sulfonate) Thin Films Supported on Glass Slides 
Qu, X 
2013 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
ASIAN JOURNAL OF CHEMISTRY 
SAHIBABAD 
25 
2 
977-980 
English 
WOS:000312621300089 
Photocatalytic nanocomposite films with different number of
bilayers were prepared on microscopic glass slides via an electrostatic layer-by-layer self-
assembly method. Atomic force microscopy measurement was used to observe surface morphology of
layer-by-layer films. The atomic force microscopy results prove that TiO2 nanoparticles are
successfully incorporated into the thin films. Photocatalytic activity of TiO2-containing
multilayer films was evaluated by measuring the degradation efficiency of methyl orange.
Examination of the effects of experimental factors shows that photodegradation efficiency of
methyl orange increases with increasing the number of bilayers of (PSS/TiO2)(n) films and the
highest removal efficiency is obtained when the acidity of solution is 2. The kinetic data
demonstrate that the photocatalytic degradation of methyl orange conforms to the apparent first-
order reaction dynamics. Immobilization of catalysts on glass slides solves the problem of
recovery and may lower the costs of wastewater treatment. 
Nanocomposite films; TiO2; Photocatalytic degradation; Methyl orange