期刊
OPTICS EXPRESS
卷 22, 期 12, 页码 14617-14624出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.22.014617
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- Ministry of Science and Technology, National Synchrotron Radiation Research Center [MOST 103-2112-M-213-001-MY2]
- National Dong Hwa University [NSC 101-2221-E-259-011, 102T932]
A facile and simple route to manufacture active surface-enhanced Raman scattering (SERS) substrate based on Ag-decorated Cu2O micro/nanospheres on Cu foil was systematically investigated. Hierarchical Cu2O micro/nanostructure transfers from CuO nanosheets and Cu(OH)(2) nanowires by means of thermally reducing the oxides from Cu2+ to Cu1+ at temperature of 500 degrees Cunder nitrogen atmosphere. The subsequent decoration of Ag on Cu2O nanostructural substrate was carried out by means of thermal evaporator deposition. Using 4-aminothiophenol (4-ATP) as probing molecules, the SERS experiments showed that the Ag-decorated Cu2O micro/nanospheres exhibit excellent detecting performance, which could be used as effective SERS substrate for ultrasensitive detection. Additionally, these novel hierarchical SERS substrates showed good reproducibility and a linear dependence between analyte concentrations and intensities, revealing the advantage of this method for easily scale-up production. (C) 2014 Optical Society of America
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