Visible light active anion codoped sol gel titania photocatalyst for pollutant degradation

Padikkaparambil Silija, Zahira Yaakob, Mohd. Ambar Yarmo, Sankaran Sugunan, Narayanan N. Binitha

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The photocatalytic activity of carbon and nitrogen co-doped sol gel TiO2 is tested using methyleneblue degradation and it is found that the activity drops sharply with increase in calcination temperature. The system calcined at 300 °C was found to be the most efficient in dye degradation and can be considered as a good candidate for the future photocatalytic applications. This highly active anion doped TiO2 is found to show amorphous nature. Elemental analysis reveals the co existence of C and N dopants, which may be responsible for the high efficiency of the catalyst. Visible absorbance is evident from the UV-VIS Diffuse Reflectance Spectra. The N2 adsorption desorption studies show the H1 hysteresis loops and a well defined mesoporous nature is observed for the catalytic systems prepared in the presence of urea. XPS analysis indicates the presence of Ti-C and Ti-N bonds which are responsible for the visible light activity of the photocatalysts.

Original languageEnglish
Pages (from-to)252-259
Number of pages8
JournalJournal of Sol-Gel Science and Technology
Volume59
Issue number2
DOIs
Publication statusPublished - Aug 2011

Fingerprint

Photocatalysts
Sol-gels
Anions
contaminants
Negative ions
titanium
Titanium
gels
degradation
anions
Degradation
Hysteresis loops
Urea
Calcination
Desorption
Coloring Agents
Nitrogen
Carbon
Thermodynamic properties
X ray photoelectron spectroscopy

Keywords

  • Anion doped TiO
  • Calcination temperature
  • Methyleneblue degradation
  • Urea precursor

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Biomaterials
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

Visible light active anion codoped sol gel titania photocatalyst for pollutant degradation. / Silija, Padikkaparambil; Yaakob, Zahira; Yarmo, Mohd. Ambar; Sugunan, Sankaran; Binitha, Narayanan N.

In: Journal of Sol-Gel Science and Technology, Vol. 59, No. 2, 08.2011, p. 252-259.

Research output: Contribution to journalArticle

Silija, Padikkaparambil ; Yaakob, Zahira ; Yarmo, Mohd. Ambar ; Sugunan, Sankaran ; Binitha, Narayanan N. / Visible light active anion codoped sol gel titania photocatalyst for pollutant degradation. In: Journal of Sol-Gel Science and Technology. 2011 ; Vol. 59, No. 2. pp. 252-259.
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