1. Synthesis of Sn-doped ZnO nanorods and their photocatalytic properties
- Author
-
Changle Wu, Huaguang Yu, Li Shen, Yong Cai Zhang, and Qingli Huang
- Subjects
Photoluminescence ,Materials science ,Scanning electron microscope ,Mechanical Engineering ,Analytical chemistry ,Condensed Matter Physics ,Field emission microscopy ,Field electron emission ,symbols.namesake ,Mechanics of Materials ,Photocatalysis ,symbols ,General Materials Science ,Nanorod ,Spectroscopy ,Raman spectroscopy - Abstract
Sn-doped ZnO nanorods were fabricated by a hydrothermal route, and characterized by X-ray diffraction, field emission scanning electron microscope, UV–vis spectroscopy, Raman spectra, solid-state nuclear magnetic resonance (NMR) spectra, and room temperature photoluminescence spectroscopy. Solid-state NMR result confirms that Sn 4+ was successfully incorporated into the crystal lattice of ZnO. Room temperature photoluminescence showed that all the as-synthesized products exhibited a weak UV emission (380 nm) and a strong visible emission (540 nm), but the intensities of the latter emission increased with increase in Sn concentration. The improvement of visible emission at 540 nm in the Sn-doped ZnO samples was suggested to be a result of the lattice defects increased by doping of Sn in zinc oxide. In addition, the photocatalytic studies indicated that Sn-doped ZnO nanorods are a kind of promising photocatalyst in remediation of water polluted by some chemically stable azo dyes.
- Published
- 2011