Abstract
The adsorption (under dark condition) and photodegradation behaviors of Rhodamine B molecules on BiOBr under visible (532 nm) pulsed laser exposure were studied and reported for the first time. The adsorption kinetics/isotherm behaviors and thermodynamic process (adsorption dynamical parameters) occurred on as-prepared BiOBr were investigated. The photodegradation mechanisms, effects of BiOBr dosage and pulsed laser energy on dye removal efficiency in the presence of BiOBr particles were studied as well. Furthermore, the photodegradation of other kinds of Rhodamine dyes such as Rhodamine 6G, Sulforhodamine B and Sulforhodamine 640 were initially investigated and compared under 532 nm pulsed laser exposure. The study also demonstrated that the dissolved oxygen plays a very significant role in the photo-catalytic decomposition of Rhodamine. The BiOBr catalyst was found intact even under acidified conditions showing good stability of the catalyst.
| Original language | English |
|---|---|
| Pages (from-to) | 192-200 |
| Number of pages | 9 |
| Journal | Applied Catalysis A: General |
| Volume | 397 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 30 Apr 2011 |
Bibliographical note
Funding Information:This work was finically supported by Center of Excellence in Nanotechnology (CENT) and KFUPM through NSTIP program under Project #08-NAN93-4 funded by KACST, Natural Science Foundation of Jiangsu Province of China (No: BK2010497). We are also grateful to referee for bringing ref [45–48] to our attention.
Keywords
- 532 nm-pulsed-laser
- BiOBr
- Photodegradation
- Rhodamine B
- Sorption
ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology