Fabrication of CdS and CuWO4 modified TiO2 nanoparticles and its photocatalytic activity under visible light irradiation

K. Vignesh, R. Priyanka, R. Hariharan, M. Rajarajan, A. Suganthi

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Abstract

CdS and CuWO4 modified TiO2 nanoparticles (CdS-CuWO4-TiO2) were prepared by the chemical impregnation method. The as-prepared nanoparticles were characterized using UV-visible-diffuse reflectance spectroscopy (UV-vis-DRS), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS) and B.E.T. surface area analysis techniques. The photocatalytic activity was evaluated based on the degradation of a dye (eosin-Y) and inactivation of a bacterium (Pseudomonas aeruginosa). The results revealed that CdS-CuWO4-TiO2 showed high photocatalytic activity over CdS-TiO2, CuWO4-TiO2 and TiO2. Moreover the reusability and stability of the photocatalyst for the degradation of eosin-Y was also studied.

Original languageEnglish
Pages (from-to)435-443
Number of pages9
JournalJournal of Industrial and Engineering Chemistry
Volume20
Issue number2
DOIs
Publication statusPublished - 25 Mar 2014

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Keywords

  • Eosin-Y
  • Photocatalysis
  • Pseudomonas aeruginosa
  • TiO
  • Visible light

ASJC Scopus subject areas

  • Chemical Engineering(all)

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