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Photocatalytic properties of BiOX (X = Cl, Br, and I)

Journal Article


Abstract


  • A novel series of photocatalysts, bismuth oxyhalide (BiOX, X = Cl, Br, and I), were synthesized by a hydrolysis method. The powder samples were characterized by the use of X-ray diffraction (XRD), scanning electron microscope, and UV-Vis spectrophotometer. The XRD pattern showed that all the BiOX were well crystallized in the tetragonal structure. The band gaps of the sheet-shaped compounds BiOX (X = Cl, Br, and I) were 3.44, 2.76, and 1.85 eV, respectively. BiOBr showed the highest photocatalytic activity in degrading rhodamine B (RhB) and evolving O2 for its proper valence band (VB). BiOI has no photocatalytic activity. BiOCl showed the highest activity in decomposing isopropanol because of electron-hole pair separation through trapping electrons by oxygen vacancies. © 2008 The Nonferrous Metals Society of China.

Publication Date


  • 2008

Citation


  • AN, H., DU, Y., WANG, T., WANG, C., HAO, W., & ZHANG, J. (2008). Photocatalytic properties of BiOX (X = Cl, Br, and I). Rare Metals, 27(3), 243-250. doi:10.1016/S1001-0521(08)60123-0

Scopus Eid


  • 2-s2.0-46449112349

Start Page


  • 243

End Page


  • 250

Volume


  • 27

Issue


  • 3

Abstract


  • A novel series of photocatalysts, bismuth oxyhalide (BiOX, X = Cl, Br, and I), were synthesized by a hydrolysis method. The powder samples were characterized by the use of X-ray diffraction (XRD), scanning electron microscope, and UV-Vis spectrophotometer. The XRD pattern showed that all the BiOX were well crystallized in the tetragonal structure. The band gaps of the sheet-shaped compounds BiOX (X = Cl, Br, and I) were 3.44, 2.76, and 1.85 eV, respectively. BiOBr showed the highest photocatalytic activity in degrading rhodamine B (RhB) and evolving O2 for its proper valence band (VB). BiOI has no photocatalytic activity. BiOCl showed the highest activity in decomposing isopropanol because of electron-hole pair separation through trapping electrons by oxygen vacancies. © 2008 The Nonferrous Metals Society of China.

Publication Date


  • 2008

Citation


  • AN, H., DU, Y., WANG, T., WANG, C., HAO, W., & ZHANG, J. (2008). Photocatalytic properties of BiOX (X = Cl, Br, and I). Rare Metals, 27(3), 243-250. doi:10.1016/S1001-0521(08)60123-0

Scopus Eid


  • 2-s2.0-46449112349

Start Page


  • 243

End Page


  • 250

Volume


  • 27

Issue


  • 3