three-dimensional hierarchical BiOCl nanoplates having remarkable photocatalysis
efficiency have been successfully prepared. For example, solvothermal with polyol
mediator technique was applied for synthesis of specific morphologies BiOCl
hierarchical nanostructures. Hierarchical BiOCl (see Fig. 10.5) showed high
photoremediation of rhodamine B activated by visible light compared with
nanosheets or nanoplates of BiOCl and P25 (Xiong et al. 2013). Unlike BiOCl,
BiOBr were introduced as visible light-sensitive semiconductor with inherently
appropriate band gap for utilization of sunlight and suggested as a powerful catalyst
about photodegradation of organic polluters under white light illumination.
Recently, considerable researches have been done to evaluate photocatalytic activity
of BiOBr in environmental treatment and photocatalytic water splitting fields.
Lamellar and plate-based BiOBr structures were prepared that showed great
photocatalyst performance for pollutant degradation (Shang et al. 2009).
BiOBr nanosheets used for photoreduction of Cr(VI) induced by visible light and
the reusability indicated high efficiency for reduction process. Researchers have also
attracted to synthesize three-dimensional hierarchical BiOBr to enhance the
photocatalytic properties which has more advantages in comparison with
one-dimensional or two-dimensional structures (Shi et al. 2013). BiOBr with
mesoporous structure showed higher visible light photocatalytic efficiency for
harmful tetrabromobisphenol A compared to commercial TiO 2 . High ranges of
pollutants such as dyes, e.g., rhodamine B, methyl orange, methylene blue, and
organic, e.g., phenol and toluene have been proposed as mannequin pollutants to
exhibit the photocatalyst activity of BiOBr compounds under visible light irradiation
Fig. 10.5 Scanning electron microscopy images (a–i) and transmittance electron microscopy
images (j–l) of BiOCl nanostructures synthesized via solvothermal method in the presence of
polyols: ethylene glycol, diethylene glycol, and triethylene glycol. EG, DEG, and TEG stand for
ethylene glycol, diethylene glycol, and triethylene glycol, respectively. (Reprinted with permission
of Elsevier from Xiong et al. 2013)
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M. Zargazi and M. Chahkandi
efficiency have been successfully prepared. For example, solvothermal with polyol
mediator technique was applied for synthesis of specific morphologies BiOCl
hierarchical nanostructures. Hierarchical BiOCl (see Fig. 10.5) showed high
photoremediation of rhodamine B activated by visible light compared with
nanosheets or nanoplates of BiOCl and P25 (Xiong et al. 2013). Unlike BiOCl,
BiOBr were introduced as visible light-sensitive semiconductor with inherently
appropriate band gap for utilization of sunlight and suggested as a powerful catalyst
about photodegradation of organic polluters under white light illumination.
Recently, considerable researches have been done to evaluate photocatalytic activity
of BiOBr in environmental treatment and photocatalytic water splitting fields.
Lamellar and plate-based BiOBr structures were prepared that showed great
photocatalyst performance for pollutant degradation (Shang et al. 2009).
BiOBr nanosheets used for photoreduction of Cr(VI) induced by visible light and
the reusability indicated high efficiency for reduction process. Researchers have also
attracted to synthesize three-dimensional hierarchical BiOBr to enhance the
photocatalytic properties which has more advantages in comparison with
one-dimensional or two-dimensional structures (Shi et al. 2013). BiOBr with
mesoporous structure showed higher visible light photocatalytic efficiency for
harmful tetrabromobisphenol A compared to commercial TiO 2 . High ranges of
pollutants such as dyes, e.g., rhodamine B, methyl orange, methylene blue, and
organic, e.g., phenol and toluene have been proposed as mannequin pollutants to
exhibit the photocatalyst activity of BiOBr compounds under visible light irradiation
Fig. 10.5 Scanning electron microscopy images (a–i) and transmittance electron microscopy
images (j–l) of BiOCl nanostructures synthesized via solvothermal method in the presence of
polyols: ethylene glycol, diethylene glycol, and triethylene glycol. EG, DEG, and TEG stand for
ethylene glycol, diethylene glycol, and triethylene glycol, respectively. (Reprinted with permission
of Elsevier from Xiong et al. 2013)
328
M. Zargazi and M. Chahkandi