A comparative study of the photo-catalytic performance of amorphous and nano-crystalline TiO2

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  • Technical University of Cluj-Napoca


Titanium dioxide powders with photocatalytic properties were obtained by a simple hydrolysis method, using an inorganic precursor. The effect of the annealing temperature on the formation and subsequent photocatalytic activity has been studied. The powders were characterized by X-ray diffraction, Raman and UV-Vis spectrometry in order to emphasise the structural and optical properties. The photo-catalytic performance of the powders by degradation of Methylene Blue under low intensity UVA and visible radiation were also quantified. The amorphous powder exhibits higher photo-catalytic activity than the equivalent anatase phase. The degradation efficiency of the dye in presence of the amorphous catalyst was 43%.


Original languageEnglish
Pages (from-to)431-435
Number of pages5
JournalOptoelectronics and Advanced Materials-Rapid Communications
Issue number3-4
Publication statusPublished - Apr 2015


  • Amorphous, Nano-crystalline phases, Photo-catalytic performance, TiO2 catalyst