Preparation of the TiO2 photocatalyst using pressurized ammonia

Autor:	Barbara Grzmil, Magdalena Janus, Antoni W. Morawski, Beata Wawrzyniak
Rok vydání:	2007
Předmět:	Ammonia chemistry.chemical_compound Materials science chemistry Chemical engineering General Chemical Engineering Photocatalysis Industrial chemistry Organic chemistry Tio2 photocatalyst General Chemistry Biotechnology
Zdroj:	PJCT. 9:51-56
ISSN:	1899-4741 1509-8117
DOI:	10.2478/v10026-007-0012-0
Popis:	Preparation of the TiO2 photocatalyst using pressurized ammonia The industrial hydrated amorphous titanium dioxide (TiO2ċ xH2O) was modified by treatment inside a chemical reactor under elevated pressure at low temperatures for 4 hours in an ammonia atmosphere. On the basis of the FTIR/DRS analysis the presence of nitrogen was confirmed. The XRD patterns of all of the catalysts exhibit mainly the diffraction lines of anatase phases. The photocatalytic activity of the modified photocatalysts was determined and compared to TiO2-P25 (Degussa, Germany). The high rate of phenol and dye degradation was obtained for the catalysts modified at 180°/15atm. TiO2-P25 showed similar activity in phenol decomposition like TiO2-15bar, whereas it was more active in dye decomposition.
Databáze:	OpenAIRE
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