TiO(2)/ZnS/CdS Nanocomposite for Hydrogen Evolution and Orange II Dye Degradation

0372102 - ÚACH 2012 RIV EG eng J - Journal Article
Štengl, Václav - Králová, Daniela
TiO(2)/ZnS/CdS Nanocomposite for Hydrogen Evolution and Orange II Dye Degradation.
International Journal of Photoenergy. Roč. 2011, - (2011), 532578-1-532578-14. ISSN 1110-662X. E-ISSN 1687-529X
R&D Projects: GA MPO FT-TA5/134
Institutional research plan: CEZ:AV0Z40320502
Keywords : TiO2 * zinc-sulfide * photocatalytic activity
Subject RIV: CA - Inorganic Chemistry
Impact factor: 1.769, year: 2011

TiO(2)/ZnS/CdS composites for photocatalytic hydrogen production from water were prepared by homogeneous hydrolysis of aqueous solutions mixture of TiOSO(4), ZnSO(4), and CdSO(4) with thioacetamide. Hydrogen evolution was observed in the presence of palladium and platinum nanoparticles deposited on TiO(2)/ZnS/CdS composites. The morphology was obtained by scanning electron microscopy, the nitrogen adsorption-desorption was used for determination of surface area ( BET) and porosity. The method of UV-VIS diffuse reflectance spectroscopy was employed to estimate band-gap energies of prepared TiO(2)/ZnS/CdS nanocomposites. The photocatalytic activity of the prepared samples were assessed by photocatalytic decomposition of Orange II dye in an aqueous slurry under UV irradiation at 365nm wavelength and visible light up to 400nm wavelength. Doped titanium dioxide by the CdS increased band-gap energy and doping with ZnS increased photocatalytic activity. The best photocatalytic activity for H(2) evolution shows sample named TiZnCd7 on surface deposited with palladium, which contains 20.21% TiO(2), 78.5% ZnS, and 1.29% CdS.
Permanent Link: http://hdl.handle.net/11104/0205493