In situ surface Raman spectroscopy was used to detect organic species embedded in Cu electrodeposits obtained from PEG-containing cyanoalkaline and acidic sulphate solutions. These measurements rely on the release of the organic species at the surface of the electrode during controlled corrosion in pure acidic aqueous solutions and on the development of surface-enhancing morphological elements in the course of the anodic dissolution. After an induction period, well defined vibrational bands appear, assigned to vinyl and hydroxyl groups that can result from cleavage reactions of the PEG chain. This technique is shown to be robust and to exhibit negligible dependence on details of the corrosion process (either galvanostatic of potentiostatic) or of the environment (0.5M H2SO4 or HCl).

An in situ Raman Investigation of Organic Species Incorporated in Cu Layers Electrodeposited from PEG-containing Acidic Sulphate and Cyanoalkaline Electrolytes

BOZZINI, Benedetto;D'URZO, Lucia;MELE, CLAUDIO
2004-01-01

Abstract

In situ surface Raman spectroscopy was used to detect organic species embedded in Cu electrodeposits obtained from PEG-containing cyanoalkaline and acidic sulphate solutions. These measurements rely on the release of the organic species at the surface of the electrode during controlled corrosion in pure acidic aqueous solutions and on the development of surface-enhancing morphological elements in the course of the anodic dissolution. After an induction period, well defined vibrational bands appear, assigned to vinyl and hydroxyl groups that can result from cleavage reactions of the PEG chain. This technique is shown to be robust and to exhibit negligible dependence on details of the corrosion process (either galvanostatic of potentiostatic) or of the environment (0.5M H2SO4 or HCl).
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11587/300669
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 12
social impact