Visible light assisted photodecolorization of eosin-Y in aqueous solution using hesperidin modified TiO 2 nanoparticles

K. Vignesh, A. Suganthi, M. Rajarajan, R. Sakthivadivel

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Hesperidin a flavanoid, modified TiO 2 nanoparticles (Hes-TiO 2) was synthesized to improve the visible light driven photocatalytic performance of TiO 2. The synthesized nanoparticles were characterized by UV-visible diffuse reflectance spectroscopy (UV-vis-DRS), FT-IR, powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The photocatalytic activity of Hes-TiO 2 was investigated based on the decolorization of eosin-Y under visible light irradiation. Hes-TiO 2 showed high efficiency for the decolorization of eosin-Y. The influences of various reaction parameters like effect of pH, catalyst dosage and initial dye concentration on the photocatalytic efficiency were investigated. The adsorption of eosin-Y on Hes-TiO 2 was found favorable by the Langmuir approach. The removal percentage of chemical oxygen demand (COD) was determined to evaluate the mineralization of eosin-Y during photodecolorization. Based on the intermediates obtained in the GC-MS spectroscopic technique, a probable degradation mechanism has been proposed.

Original languageEnglish
Pages (from-to)4592-4600
Number of pages9
JournalApplied Surface Science
Volume258
Issue number10
DOIs
Publication statusPublished - 1 Mar 2012
Externally publishedYes

Fingerprint

Hesperidin
Eosine Yellowish-(YS)
Nanoparticles
Chemical oxygen demand
X ray powder diffraction
Infrared spectroscopy
Dyes
Irradiation
Adsorption
Degradation
Scanning electron microscopy
Catalysts
Coloring Agents

Keywords

  • Eosin-Y
  • Hes-TiO
  • Photocatalysis
  • Photodecolorization
  • Visible light

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Visible light assisted photodecolorization of eosin-Y in aqueous solution using hesperidin modified TiO 2 nanoparticles. / Vignesh, K.; Suganthi, A.; Rajarajan, M.; Sakthivadivel, R.

In: Applied Surface Science, Vol. 258, No. 10, 01.03.2012, p. 4592-4600.

Research output: Contribution to journalArticle

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