Photocatalytic degradation of dye pollutant over Ti and Co doped SBA-15: Comparison of activities under visible light

P. V. Suraja, Zahira Yaakob, N. N. Binitha, M. R. Resmi, P. P. Silija

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Thick-walled hexagonally ordered Cobalt and titanium loaded SBA-15 mesoporous photocatalysts were prepared by impregnating the metal precursor solution on the hydrothermally stable support. The catalysts were analyzed using various spectroscopic and diffraction techniques. XRD measurements revealed that Co exists as its spinel structure Co3O4 and Ti is present in the anatase TiO2 phase. FTIR showed the absorption bands of Co3O4 around 667 and 565cm-1. The visible light absorbance of the photocatalytic systems was studied by Diffuse Reflectance Ultraviolet-Visible spectroscopy (UV-vis DRS) measurements. Systems exhibited fairly good performance as photocatalysts for pollutant degradation under visible light. SBA-15 support was helpful in the easy separation of catalysts after the completion of the degradation. In the case of cobalt loaded SBA-15, activity is found to be maximum when the cobalt loading is 40% whereas 50% Ti loaded SBA-15 is found to be the most active among the prepared systems for the degradation of the dye pollutant methylene blue (MB).

Original languageEnglish
Pages (from-to)265-271
Number of pages7
JournalChemical Engineering Journal
Volume176-177
DOIs
Publication statusPublished - 1 Dec 2011

Fingerprint

cobalt
Cobalt
dye
Coloring Agents
Dyes
Photocatalysts
Catalyst supports
Degradation
degradation
pollutant
catalyst
Catalysts
anatase
Ultraviolet visible spectroscopy
absorbance
spinel
Titanium dioxide
diffraction
titanium
Absorption spectra

Keywords

  • Pollutant degradation
  • SBA-15 support
  • Visible light activity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

Cite this

Photocatalytic degradation of dye pollutant over Ti and Co doped SBA-15 : Comparison of activities under visible light. / Suraja, P. V.; Yaakob, Zahira; Binitha, N. N.; Resmi, M. R.; Silija, P. P.

In: Chemical Engineering Journal, Vol. 176-177, 01.12.2011, p. 265-271.

Research output: Contribution to journalArticle

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