Au/TiO2 reusable photocatalysts for dye degradation

Silija Padikkaparambil, Binitha Narayanan, Zahira Yaakob, Suraja Viswanathan, Siti Masrinda Tasirin

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Nanogold doped TiO2 catalysts are synthesized, and their application in the photodegradation of dye pollutants is studied. The materials are characterized using different analytical techniques such as X-ray diffraction, transmission electron microscopy, UV-visible diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. The results revealed the strong interaction between the metallic gold nanoparticles and the anatase TiO2 support. Au doped systems showed very good photoactivity in the degradation of dye pollutants under UV irradiation as well as in sunlight. A simple mechanism is proposed for explaining the excellent photoactivity of the systems. The reusability studies of the photocatalysts exhibited more than 98% degradation of the dye even after 10 repeated cycles.

Original languageEnglish
Article number752605
JournalInternational Journal of Photoenergy
Volume2013
DOIs
Publication statusPublished - 2013

Fingerprint

Photocatalysts
Coloring Agents
Dyes
dyes
degradation
Degradation
contaminants
Photodegradation
Reusability
sunlight
anatase
Gold
Titanium dioxide
x rays
X ray photoelectron spectroscopy
photoelectron spectroscopy
Irradiation
Spectroscopy
gold
Nanoparticles

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)

Cite this

Au/TiO2 reusable photocatalysts for dye degradation. / Padikkaparambil, Silija; Narayanan, Binitha; Yaakob, Zahira; Viswanathan, Suraja; Tasirin, Siti Masrinda.

In: International Journal of Photoenergy, Vol. 2013, 752605, 2013.

Research output: Contribution to journalArticle

Padikkaparambil, Silija ; Narayanan, Binitha ; Yaakob, Zahira ; Viswanathan, Suraja ; Tasirin, Siti Masrinda. / Au/TiO2 reusable photocatalysts for dye degradation. In: International Journal of Photoenergy. 2013 ; Vol. 2013.
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