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Electrosynthesis of SER-Active Silver Nanopillar Electrode Arrays
Zitatschlüssel ISI:000276889300011
Autor Feng, Jiu-Ju and Lu, Ya-Hui and Gernert, Ulrich and Hildebrandt, Peter and Murgida, Daniel H.
Seiten 7280-7284
Jahr 2010
ISSN 1932-7447
DOI 10.1021/jp9084469
Adresse 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Journal J. Phys. Chem. C
Jahrgang 114
Nummer 16
Monat APR 29
Zusammenfassung Here we report a one step electrochemical method for the deposition of pillar-like silver nanostructures on graphite plate electrodes. The devices were tested as SER-active electrode arrays using covalently attached hemin. The nanopillar arrays provide reproducible surface enhanced resonance Raman (SERR) signals within 6\% standard deviation and Raman enhancement factors of 1 x 10(5). They also show good electrochemical performance, as verified by potential-dependent SERR spectroscopy and cyclic voltammetry. Furthermore, the hemin-coated arrays display mediatorless electrocatalytic activity toward NO2-. Thus, the Ag nanopillar arrays present good prospects for their application in sensing devices and for SER/SERR based spectroelectrochernical applications in general.
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