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 language | English |
|---|---|
| Pages (from-to) | 4592-4600 |
| Number of pages | 9 |
| Journal | Applied Surface Science |
| Volume | 258 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1 Mar 2012 |
| Externally published | Yes |
Keywords
- Eosin-Y
- Photocatalysis
- Photodecolorization
- Visible light