| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10639923 | Materials Science and Engineering: B | 2011 | 5 Pages |
Abstract
A pollution-free method to synthesize polyurethane (PU) was used. PU/CdS nanocomposite films were synthesized by simulating bio-mineralization process. The factors that affect the hydrothermal stability and fluorescence properties of the films were studied. Further, the sensing properties of the nanocomposite films to Ag(I) ions in water were systematically investigated. A scanning electron microscopy observation showed that the sizes of the CdS particles are around 60Â nm, and the particles are evenly doped within the PU films. The fluorescence emission of nanocomposite films has been found to be very sensitive to the presence of Ag(I) ions, and a small amount of Ag(I) ions makes the emissions increase dramatically. The emission is hardly affected by other common ions in water except chloride and sulfate through their precipitation effects on Ag+ ions. The films are predicted to have the potential to be developed into excellent sensing films for Ag(I) ions in water.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Shan Wang, Demei Yu, Yi Huang, Jinchan Guo, Yongsheng Wei,