Synthesis, characterization, and design of a photocatalyst based on BiOBr nanoplates and tin porphyrin with enhanced visible light photocatalytic activity

The bismuth oxybromide (BiOBr) photocatalyst was first synthesized via a simple co-precipitation method. To improve the visible light photocatalytic activity of the prepared photocatalyst, it was then functionalized with the tin porphyrin (SnTCPP) photosensitizer to produce the modified photocatalys...

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Bibliographic Details
Published in:Research on chemical intermediates 2020, Vol.46 (1), p.197-213
Main Authors: Yaghoubi-berijani, Marzieh, Bahramian, Bahram, Zargari, Solmaz
Format: Article
Language:English
Subjects:
Bismuth
Catalysis
Catalytic activity
Chemistry
Chemistry and Materials Science
Dyes
Field emission microscopy
Fourier transforms
Infrared analysis
Inorganic Chemistry
Light irradiation
Photocatalysis
Photocatalysts
Photodegradation
Photoluminescence
Physical Chemistry
Pollutants
Raman spectroscopy
Rhodamine
Scientific imaging
Spectrometry
X ray powder diffraction
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Summary:The bismuth oxybromide (BiOBr) photocatalyst was first synthesized via a simple co-precipitation method. To improve the visible light photocatalytic activity of the prepared photocatalyst, it was then functionalized with the tin porphyrin (SnTCPP) photosensitizer to produce the modified photocatalyst BiOBr/SnTCPP. The modified photocatalyst produced was characterized by the X-ray powder diffraction, field emission scanning electron microscopy, UV–visible diffusive reflectance spectrometry, Fourier transform infrared spectrometry, Raman spectroscopy, and photoluminescence spectrometry analytical techniques. Furthermore, the photocatalytic activity of BiOBr/SnTCPP was evaluated for degradation of methyl orange (MO), Rhodamine B (RhB), and 2, 4-dichlorophenol (DCP). The photocatalytic results obtained showed that BiOBr/SnTCPP was able to destroy 78%, 90%, and 80% of MO, RhB, and DCP, respectively, under the visible light irradiation. The photocatalytic performance of BiOBr/SnTCPP was found to be much higher than that of BiOBr. In addition, investigating the photocatalytic mechanism by using some scavengers for photodegradation of the above-mentioned pollutants showed that the OH and O 2 ·− radicals were the main species involved in the photocatalytic process.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-019-03943-9