Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
596379 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2008 | 5 Pages |
Abstract
By scarifying ZnO crystallites within core-shell-structured ZnS/ZnO microspheres, hollow spheres of ZnS on a gram scale were prepared, which did not require spherical colloids, vesicles, or microemulsions as the templates. The synthesis was performed at a relatively low temperature (<85 °C) and the period including the preparation of core-shell-structured precursors and the dissolution of ZnO crystallites is shorter than 4 h. The structure, morphology, and optical properties of hollow spheres were characterized by techniques of transmission electron microscope (TEM), field emitting scanning electron microscope (FESEM), X-ray powder diffraction (XRD), and UV-vis spectroscopy. The studies of the photodegradation of RB catalyzed by hollow spheres of ZnS demonstrated that the as-prepared hollow spheres had a high photocatalytic activity and can induce the decomposition of RB rapidly. Consequently, the as-prepared hollow spheres should have potential applications in photocatalysts for the elimination of organic pollutants.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Li Gu, Xuebo Cao, Cui Zhao,