{100} facet could exhibit high photocatalytic activity due to produce oxygen
vacancies under UV illumination. In order to make optimum usage of solar energy,
there is a remarkable tendency for evaluation of photocatalytic activity of BiOCl
under visible light irradiation. If BiOCl coupled with some dyes which have intrinsic
physicochemical properties could have visible light activity. For example, Xiong
et al. (2011) reported that synthesis of square-like BiOCl nanoplates by hydrothermal method, which has [Cl–Bi–O–Bi–Cl] layered structure and demonstrated high
photocatalyst performance for rhodamine B compared to commercial TiO 2 (P25). In
this work, diffraction reflectance UV spectroscopy studies for BiOCl nanoplates
reported a wide band gap 2.9 eV, so photosensitization process overcome on the
photocatalytic process for rhodamine B degradation. At other work, Ye et al. (2012)
fabricated marvelous BiOCl with oxygen vacancies under Ar purging, which
exhibited 20 times photocatalytic activity than conventional BiOCl for
photodegradation of rhodamine B induced via visible light. Porous BiOCl
nanosheets also demonstrated photosensitized removal of rhodamine B. Also,
Fig. 10.4 The conduction band orbital density isosurfaces of BiOX (a) X ¼ F, (b) X ¼ Cl, (c)
X ¼ Br, and (d) X ¼ I with the adoption of Bi 5d states. (Reprinted with permission of Elsevier from
Huang and Zhu 2008)
10 Bismuth-Based Compounds as Visible Light Photocatalyst for Remediation and. . .
327
vacancies under UV illumination. In order to make optimum usage of solar energy,
there is a remarkable tendency for evaluation of photocatalytic activity of BiOCl
under visible light irradiation. If BiOCl coupled with some dyes which have intrinsic
physicochemical properties could have visible light activity. For example, Xiong
et al. (2011) reported that synthesis of square-like BiOCl nanoplates by hydrothermal method, which has [Cl–Bi–O–Bi–Cl] layered structure and demonstrated high
photocatalyst performance for rhodamine B compared to commercial TiO 2 (P25). In
this work, diffraction reflectance UV spectroscopy studies for BiOCl nanoplates
reported a wide band gap 2.9 eV, so photosensitization process overcome on the
photocatalytic process for rhodamine B degradation. At other work, Ye et al. (2012)
fabricated marvelous BiOCl with oxygen vacancies under Ar purging, which
exhibited 20 times photocatalytic activity than conventional BiOCl for
photodegradation of rhodamine B induced via visible light. Porous BiOCl
nanosheets also demonstrated photosensitized removal of rhodamine B. Also,
Fig. 10.4 The conduction band orbital density isosurfaces of BiOX (a) X ¼ F, (b) X ¼ Cl, (c)
X ¼ Br, and (d) X ¼ I with the adoption of Bi 5d states. (Reprinted with permission of Elsevier from
Huang and Zhu 2008)
10 Bismuth-Based Compounds as Visible Light Photocatalyst for Remediation and. . .
327