"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

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

A. MOLEA1, V. POPESCU1,* , N. A. ROWSON2

Affiliation

  1. Technical University of Cluj-Napoca, Faculty of Material and Environmental Engineering, Physics and Chemistry Department, No.103-105 Muncii avenue, 400641 Cluj-Napoca, Romania
  2. University of Birmingham, School of Chemical Engineering, Edgbaston Birmingham B15 2TT, United Kingdom

Abstract

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%..

Keywords

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

Citation

A. MOLEA, V. POPESCU, N. A. ROWSON, A comparative study of the photo-catalytic performance of amorphous and nano-crystalline TiO2, Optoelectronics and Advanced Materials - Rapid Communications, 9, 3-4, March-April 2015, pp.431-435 (2015).

Submitted at: Sept. 6, 2014

Accepted at: March 19, 2015