期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 94, 期 -, 页码 157-162出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2012.01.037
关键词
ZnO/Ag; Nanorod; Electric field; SERS; Photocatalytic
资金
- National Natural Science Foundation of China [11174047]
- Ministry of Education of China [70401F]
- Science Foundation for Yong Teachers of Northeast Normal University
A multifunctional ZnO/Ag nanorod arrays has been prepared to construct SERS-active and photocatalytic substrate by a hydrothermal method. The morphology, microstructure and optical properties of ZnO/Ag nanorod arrays are characterized by X-ray diffraction spectra, field emission scanning electron microscopy, energy-dispersive, ultraviolet-visible (UV-vis) absorption and photoluminescence measurement to confirm the successful Ag deposition on the ZnO nanorod arrays. Such arrays exhibit strong and reproducible SERS signals of the Raman probe molecules. The mechanism of SERS enhancement was discussed due to the formation of interfacial electric field between ZnO nanorods and Ag. Furthermore, ZnO/Ag nanorod arrays also show catalytic properties by photocatalytic degradation of target molecules adsorbed to the substrate, which provides promising application for detecting and eliminating organic pollutant. (C) 2012 Elsevier B.V. All rights reserved.
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