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- Title
Facile Green Synthesis of BiOBr Nanostructures with Superior Visible-Light-Driven Photocatalytic Activity.
- Authors
Garg, Seema; Yadav, Mohit; Chandra, Amrish; Sapra, Sameer; Gahlawat, Soniya; Ingole, Pravin P.; Todea, Milica; Bardos, Eniko; Pap, Zsolt; Hernadi, Klara
- Abstract
Novel green bismuth oxybromide (BiOBr-G) nanoflowers were successfully synthesized via facile hydrolysis route using an <italic>Azadirachta indica</italic> (Neem plant) leaf extract and concurrently, without the leaf extract (BiOBr-C). The <italic>Azadirachta indica</italic> leaf extract was employed as a sensitizer and stabilizer for BiOBr-G, which significantly expanded the optical window and boosted the formation of photogenerated charge carriers and transfer over the BiOBr-G surface. The photocatalytic performance of both samples was investigated for the degradation of methyl orange (MO) and phenol (Ph) under the irradiation of visible light. The leaf extract mediated BiOBr-G photocatalyst displayed significantly higher photocatalytic activity when compared to BiOBr-C for the degradation of both pollutants. The degradation rate of MO and Ph by BiOBr-G was found to be nearly 23% and 16% more when compared to BiOBr-C under visible light irradiation, respectively. The substantial increase in the photocatalytic performance of BiOBr-G was ascribed to the multiple synergistic effects between the efficient solar energy harvesting, narrower band gap, high specific surface area, porosity, and effective charge separation. Furthermore, BiOBr-G displayed high stability for five cycles of photocatalytic activity, which endows its practical application as a green photocatalyst in the long run.
- Subjects
NANOSTRUCTURED materials synthesis; BISMUTH compounds; PHOTOCATALYSIS; VISIBLE spectra; CHARGE carriers; BIODEGRADATION of phenol
- Publication
Materials (1996-1944), 2018, Vol 11, Issue 8, p1273
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma11081273