Photoelectrochemical characterization of natural copper sulphide electrodes in alkaline media: Effect of xanthate adsorption

H. Gómez, A. Cortés, RODRIGO GONZALO HENRIQUEZ NAVIA, G. Riveros, R. Córdova, R. Schrebler

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A photoelectrochemical approach is utilized for studying the processes that take place on copper sulfide mineral surfaces in alkaline solutions, either in absence or presence of potassium ethyl - xanthate. It is found that photoresponses are closely related to the mineral stoichiometric composition which also determines its semiconducting or metallic character. It appears that in the potential interval where xanthate anions can be adsorbed, surface composition and reactivity are closely linked.

Original languageEnglish
Pages (from-to)43-47
Number of pages5
JournalBoletin de la Sociedad Chilena de Quimica
Volume48
Issue number2
DOIs
StatePublished - Jun 2003
Externally publishedYes

Keywords

  • Copper sulfides
  • Flotation
  • Non stoichiometry
  • Photoelectrochemistry
  • Semiconducting properties

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