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A New Precursor for the Preparation of Nanocrystalline TiO2 Films and Their Photocatalytic Properties

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Abstract:

In this work, we present a new precursor for the preparation of thin and transparent nanocrystalline TiO2 films, which involves the use of Titanium(IV) bis(ammonium lactato) dihydroxide as Ti(IV) source and Triton X-100 as surfactant template. The films were heated at various temperatures in order to optimize their nanostructure and their photocatalytic activity. The morphology and the nanostructure of the films were characterized by SEM and AFM. Crystallinity of the films was examined by XRD and their light absorption with UV–Vis spectroscopy. The photocatalytic activity of the films was investigated by using an azo dye: Basic Blue 41. Excitation of the samples was made by low intensity black light tubes emitting in the Near-UV. The photodegradation of the dye was studied as a function of the quality of the deposited TiO2 films and the calcination temperature in comparison with similar films made by standard procedures.

Keywords: BASIC BLUE 41; NANOCRYSTALLINE TIO2; TITANIUM BIS(AMMONIUM LACTATO) DIHYDROXIDE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2604

Publication date: September 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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