期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 182, 期 -, 页码 124-129出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2017.04.005
关键词
Nanoporous zirconia; Anodic oxidation; SERS platforms; Silver deposition; Magnetron sputtering; Vacuum evaporation
类别
资金
- Institute of Physical Chemistry Polish Academy of Sciences
Deposition of plazmonic metal nanoparticles on nanostructured oxide templates is an important part in preparation and design of suitable substrates for surface-enhanced Raman scattering (SERS) measurements. In this contribution we analyze the influence of the Ag deposition methods (magnetron sputtering and evaporation in vacuum, which are often used interchangeably) on SERS activity of the resultant Ag-n/ZrO2/Zr composite samples fabricated. We found that deposition of the same amount of Ag (0.020 mg/cm(2)) on the ZrO2 nanoporous layers using magnetron sputtering and evaporation in vacuum leads to formation of two different surface morphologies, which can be distinguished on the basis of high-resolution scanning electron microscopy (HR-SEM) measurements. Those differences distinctly affect SERS intensity measured for probe molecules: pyridine and sodium 2-mercaptoethanesulfonate. SERS substrates obtained using evaporation technique are ca. 1.5 times more efficient than substrates prepared using magnetron sputtering. (C) 2017 Elsevier B.V. All rights reserved.
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