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Two-dimensional bismuth oxybromide coupled with molybdenum disulphide for enhanced dye degradation using low power energy-saving light bulb.
- Source :
-
Journal of Environmental Management . Jul2017, Vol. 197, p63-69. 7p. - Publication Year :
- 2017
-
Abstract
- In the present work, two-dimensional bismuth oxybromide (BiOBr) was synthesized and coupled with co-catalyst molybdenum disulphide (MoS 2 ) via a simple hydrothermal process. The photoactivity of the resulting hybrid photocatalyst (MoS 2 /BiOBr) was evaluated under the irradiation of 15 W energy-saving light bulb at ambient condition using Reactive Black 5 (RB5) as model dye solution. The photo-degradation of RB5 by BiOBr loaded with 0.2 wt% MoS 2 (MoBi-2) exhibited more than 1.4 and 5.0 folds of enhancement over pristine BiOBr and titanium dioxide (Degussa, P25), respectively. The increased photocatalytic performance was a result of an efficient migration of excited electrons from BiOBr to MoS 2 , prolonging the electron-hole pairs recombination rate. A possible charge transfer diagram of this hybrid composite photocatalyst, and the reaction mechanism for the photodegradation of RB5 were proposed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DYES & dyeing
*PHOTOCATALYSTS
*TITANIUM dioxide
*PHOTODEGRADATION
*IRRADIATION
Subjects
Details
- Language :
- English
- ISSN :
- 03014797
- Volume :
- 197
- Database :
- Academic Search Index
- Journal :
- Journal of Environmental Management
- Publication Type :
- Academic Journal
- Accession number :
- 122826992
- Full Text :
- https://doi.org/10.1016/j.jenvman.2017.03.027