The Simplest Way to Iodine-Doped Anatase for Photocatalysts Activated by Visible Light

0374174 - ÚACH 2012 RIV EG eng J - Journal Article
Štengl, Václav - Grygar, Tomáš
The Simplest Way to Iodine-Doped Anatase for Photocatalysts Activated by Visible Light.
International Journal of Photoenergy. Roč. 2011, - (2011), 685935-1-685935-13. ISSN 1110-662X. E-ISSN 1687-529X
R&D Projects: GA ČR GA203/08/0334
Institutional research plan: CEZ:AV0Z40320502
Keywords : titanium-dioxide * aqueous-solution * orange-II * TiO2 photocatalysts * Raman spectroscopy * optical-properties
Subject RIV: CA - Inorganic Chemistry
Impact factor: 1.769, year: 2011

Iodine-doped TiO(2) was prepared by thermal hydrolysis of aqueous solutions of the titanium peroxo-complex, which includes no organic solvents or organometallic compounds. The synthesized samples were characterized by X-ray diffraction (XRD), Raman spectroscopy (RS), infrared spectroscopy (IR), specific surface area (BET), and porosity determination (BJH). The morphology and particle size was determined by high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). All prepared samples have a red-shifted band-gap transition, well crystalline anatase structure, and porous particles with a 100-200 m(2) g(-1) specific surface area. The photocatalytic activity of iodine-doped titania samples was determined by decomposition of Orange II dye during irradiation at 365 nm and 400 nm. Iodine doping promotes the titania photocatalytic activity very efficiently under visible light irradiation.
Permanent Link: http://hdl.handle.net/11104/0207151