Effect of electrochemical pretreatment on SERS and catalytic activity of Cu-Zr amorphous alloys

A. Kudelski, M. Janik-Czachor, M. Varga, M. Dolata, J. Bukowska, Á Molnár, A. Szummer

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This paper presents results of electrochemical, microscopic, spectroelectrochemical (SERS) and catalytic investigations of Cu-Zr amorphous alloy ribbons aimed at increasing their catalytic activity for the dehydrogenation reaction of aliphatic alcohols. Rapid dissolution in sulphuric acid/copper sulphate solution of partially devitrified Cu-Zr ribbons resulted in a nearly twofold enhancement of their catalytic activity for dehydrogenation of 2-propanol. However, their local SERS activity on the Cu rich areas was not distinctly altered by this electrochemical pretreatment. Yet, the SERS heterogeneity of the devitrified material vanished: the SERS intensity increased considerably outside the Cu rich areas. A tentative mechanism of the effects of various electrochemical pretreatments on the surface activity is discussed. & 1999 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)123-130
Number of pages8
JournalApplied Catalysis A: General
Volume181
Issue number1
DOIs
Publication statusPublished - May 3 1999

Keywords

  • Amorphous alloys
  • Anodic dissolution
  • Catalytic activity
  • Cu alloys
  • Cu-Zr alloys
  • Surface-enhanced Raman scattering (SERS)

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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