| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1634969 | Rare Metals | 2008 | 8 Pages |
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Huizhong AN, Yi DU, Tianmin WANG, Cong WANG, Weichang HAO, Junying ZHANG,