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    STUDIA CHEMIA - Ediţia nr.1 din 2017  
         
  Articol:   INVESTIGATION OF TITANIUM-DIOXIDE COATINGS ON MEMBRANE FILTRATION PROPERTIES.

Autori:  .
 
       
         
  Rezumat:  
DOI: http://dx.doi.org/10.24193/subbchem.2017.1.22

Published Online: 2017-03-17
Published Print: 2017-03-31

VIEW PDF: INVESTIGATION OF TITANIUM-DIOXIDE COATINGS ON MEMBRANE FILTRATION PROPERTIES

In this study, synthesized TiO2 nanorods and commercial Aeroxide P25 TiO2 nanoparticles were deposited on polyethersulfone (PES) membrane surfaces to compare their photocatalytic activity and effects on membrane surface and filtration properties. The catalysts were deposited on the membrane surface by physical deposition. The effect of the TiO2 amount on the stability of the catalyst layer and its effect on membrane resistance in presence and absence of UV irradiation were investigated. 1.2 mg/cm2 catalyst coverage proved to be a minimal appropriate coverage to prevent membrane damage during UV irradiation. The catalysts formed hydrophilic layers on the surface, and in case of both catalyst the surface free energy increased compared to the neat membrane. The photocatalytic activity and retention of the modified membranes were tested spectrophotometrically by using Acid Red1, azo dye.

Keywords: membrane filtration, TiO2 coated membranes, photocatalysis, azo dye, Acid Red 1
 
         
     
         
         
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