The role of micro- and nanomorphology of rough silver surfaces of different nature in surface enhanced Raman scattering effect: A combined study of scanning force microscopy and low-frequency Raman modes

2000 ◽  
Vol 113 (14) ◽  
pp. 5947-5953 ◽  
Author(s):  
Bruno Pignataro ◽  
Angela De Bonis ◽  
Giuseppe Compagnini ◽  
Paola Sassi ◽  
Rosario Sergio Cataliotti
Keyword(s):  
Raman Scattering ◽  
Low Frequency ◽  
Scanning Force Microscopy ◽  
Force Microscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Raman Modes ◽  
Scanning Force ◽  
Enhanced Raman Scattering

Surface-Enhanced Raman Scattering and Atomic Force Microscopy of Brass Electrodes in Sulfuric Acid Solution Containing Benzotriazole and Chloride Ion

1993 ◽  
Vol 47 (1) ◽  
pp. 80-84 ◽  
Author(s):  
Joel C. Rubim ◽  
Jae-Ho Kim ◽  
Eric Henderson ◽  
Therese M. Cotton
Keyword(s):  
Atomic Force Microscopy ◽  
Sulfuric Acid ◽  
Raman Scattering ◽  
Acid Solution ◽  
Chloride Ion ◽  
Force Microscopy ◽  
Atomic Force ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Three different methods were used to roughen brass (Cu/Zn = 67/33) electrodes in 0.5 M H2SO4 containing 1.0 mM benzotriazole (BTAH): (1) polarization at +0.05 V vs. saturated calomel for 5 min; (2) immersion in the above solution for six hours; and (3) oxidation-reduction cycling in the presence of chloride ion. The surfaces prepared by the first two methods exhibited surface-enhanced Raman scattering (SERS) spectra of the polymeric complex [Cu(I)BTA] n. The SERS spectrum obtained from electrodes prepared by the third method is very similar to that of [CU(I)C1BTAH]4. Examination of the electrodes by atomic force microscopy (AFM) showed that a large number of grain boundary sites are formed by the roughening processes. This effect is attributed to the loss of zinc, which occurs during corrosion of the mirror-like, polished brass electrode surface in the sulfuric acid solution.

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