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Electrodeposition of gold thin films with controlled morphologies and theirapplications in electrocatalysis and SERS

Nanotechnology, 2012-06, Vol.23 (25), p.255705-1-7 [Peer Reviewed Journal]

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Title:
Electrodeposition of gold thin films with controlled morphologies and theirapplications in electrocatalysis and SERS
Author: Elias, J ; Gizowska, M ; Brodard, P ; Widmer, R ; deHazan, Y ; Graule, T ; Michler, J ; Philippe, L
Subjects: Deposition
Is Part Of: Nanotechnology, 2012-06, Vol.23 (25), p.255705-1-7
Description: Here, an easy and effective electrochemical route towards the synthesis of gold thin films with well-controlled roughness, morphology and crystallographic orientation is reported. To control these different factors, the applied potential during deposition played a major role. A tentative nucleation and growth mechanism is demonstrated by means of electrochemical characterizations and a formation mechanism is proposed. Interestingly, the differences in geometry and orientation of the different gold deposits have shown a clear correlation with the electrocatalytical activity in the case of oxygen sensing. In addition, not only the electrocatalytical activity but also the surface-enhanced Raman scattering of the gold deposits have been found to depend both on the roughness and on the size of the surface nanostructures, allowing a fine tuning by controlling these two parameters during deposition.
Language: English
Identifier: ISSN: 0957-4484
EISSN: 1361-6528
DOI: 10.1088/0957-4484/23/25/255705
Source: Alma/SFX Local Collection

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