期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 344, 期 2, 页码 251-255出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.12.061
关键词
ZnO nanorod; Ag nanoparticles; Surface-enhanced Raman scattering; X-ray photoelectron spectroscopy
资金
- National Natural Science Foundation of PR China [20573041, 20773044, 20873050]
- 111 project [1306009]
- National Science & Technology Pillar Program [2007BA738B03]
One-dimensional (1D) ZnO/4-mercaptopyridine (4-Mpy)/Ag assemblies have been prepared by immersing ZnO rod arrays modified by 4-MPy into Ag nanoparticles colloid. Scanning electron microscopy (SEM). Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) have been employed to investigate the formation process of ZnO/4-Mpy/Ag assemblies. It shows that 4-Mpy molecules are adsorbing on the surface of the ZnO rod arrays, then 4-Mpy molecules are partially dissociated from ZnO rod arrays by desorption and connect with Ag nanoparticles via the S atom. The analysis of XPS confirms the result obtained from Raman spectra of ZnO/4-Mpy/Ag assemblies. This research provides a direct spectroscopic evidence for the formation of mixed 1D ZnO/4-Mpy/Ag assemblies. (C) 2010 Elsevier Inc. All rights reserved.
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