TiO2 Immobilized Biodegradable Polymer for Photocatalytic Removal of Chlorophenol


SIVLIM T., AKKAN S., ALTIN İ. , KOC M., Sokmen M.

WATER AIR AND SOIL POLLUTION, vol.223, no.7, pp.3955-3964, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 223 Issue: 7
  • Publication Date: 2012
  • Doi Number: 10.1007/s11270-012-1163-z
  • Title of Journal : WATER AIR AND SOIL POLLUTION
  • Page Numbers: pp.3955-3964
  • Keywords: Biodegradable polymer, Polycaprolactone, Photocatalytic degradation, 4-Chlorophenol, THIN-FILMS, DEGRADATION, COATINGS

Abstract

This study concentrated on the direct immobilization of anatase nano titanium dioxide particles (TiO2, 44 nm particle size) into or onto a biodegradable polymer, polycaprolactone, by solvent-cast processes. The photocatalytic properties of the produced materials were tested by photocatalytic removal of organic contaminant 4-chlorophenol. Produced TiO2 immobilized polymer successfully removed 4-chlorophenol (4-CP, 20 ppm which is equal to 1.56 x 10(-4) M) from aqueous solution without additional pH arrangement employing a UV-A light (365 nm) source. Immobilization of n-TiO2 onto polycaprolactone (PCL) produced improved 4-CP removal percentages, reaching to nearly 85 %. Increased PCL mass significantly increases the removal percentage of 4-CP. When a UVC lamp emitting 254 nm light is used, the removal percentage reaches to 89 %. UV irradiation did not cause any change in the microstructure of the polymeric material (confirmed with ATR-FTIR analysis). This is an important evidence that the material could be reused for further photocatalytic treatments. Produced material seems to be highly promising for successful removal of organic pollutants beside its biodegradable nature.