Copper-doped TiO2 photocatalysts: application to drinking water by humic matter degradation


Turkten N., Cinar Z. , TOMRUK A., Bekbolet M.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, vol.26, no.36, pp.36096-36106, 2019 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 36
  • Publication Date: 2019
  • Doi Number: 10.1007/s11356-019-04474-x
  • Title of Journal : ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
  • Page Numbers: pp.36096-36106

Abstract

The aim of this study was to determine the photocatalytic performance of copper-doped TiO2 (Cu-TiO2) specimens on the degradation of dissolved organic matter (DOM) represented by a model humic acid (HA). TiO2 was synthesized by sol-gel method from an alkoxide precursor. Cu-doped TiO2 specimens containing 0.25 wt% and 0.50 wt% Cu were prepared by wet impregnation method using sol-gel synthesized as well as bare TiO2 P-25 and characterized by XRD, SEM, XPS, Raman spectroscopy, UV-DRS, and BET measurements. Their photocatalytic activities were evaluated with regard to degradation kinetics of HA in terms of UV-vis and fluorescence spectroscopic parameters and organic contents. HA fluorescence excitation emission matrix (EEM) contour plots indicated that the solar photocatalytic degradation pathway was TiO2-type specific and Cu dopant content.