TiO2 modified by ammonia as a long lifetime photocatalyst for dyes decomposition

• Authors: Julia Choina , Diana Dolat , Ewelina Kusiak , Magdalena Janus , Antoni Morawski
• Languages of publication: EN

Abstracts

EN

Ammonia-modified TiO2 (TiO2/N), prepared in a pressure reactor was used as the well- active and longlife photocatalyst for the azo dye (Reactive Red 198) decomposition. The effect of aeration and the different value of the pH of the reaction medium on the photocatalytic degradation of Reactive Red 198 in water has been investigated. It has been reported that the degradation is greatly influenced by the reaction pH and the faster decomposition of azo dye took place at pH 3.5. When the solution was acidic, a larger amount of azo dye on the positively charged surface of TiO2 photocatalysts was adsorbed. From the obtained results it can be seen that the effectiveness of the decolourisation of the solution was faster by using the nitrogen-modified TiO2.

Keywords

EN

photocatalysis; nitrogen-modified TiO2; lifetime

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2009
• Volume: 11
• Issue: 4
• Pages: 1-6

Dates

published

1 - 1 - 2009

online

8 - 1 - 2010

Contributors

author

Julia Choina

• Institute of Chemical and Environment Engineering, Department of Water Technology and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

author

Diana Dolat

• Institute of Chemical and Environment Engineering, Department of Water Technology and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

author

Ewelina Kusiak

• Institute of Chemical and Environment Engineering, Department of Water Technology and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

author

Magdalena Janus

author

Antoni Morawski

• Institute of Chemical and Environment Engineering, Department of Water Technology and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

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Identifiers

DOI

10.2478/v10026-009-0035-9