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  • A SERS Study of the Interaction of n-Octanohydroxamate with a Copper Electrode

    Author(s)
    Hope, Gregory A
    Woods, Ronald
    Parker, Gretel K
    Griffith University Author(s)
    Hope, Greg A.
    Year published
    2010
    Metadata
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    Abstract
    SERS spectroelectrochemical investigations have demonstrated that the flotation collector n-octanohydroxamate specifically adsorbs on copper surfaces in the region of thermodynamic stability of the metal and, at low ionic strength, this gives rise to a contact angle of ~ 70஠The contact angle fell to zero when Cu2O was formed on the copper surface and increased again to ~ 70͊when the potential was increased further. Voltammetry established that, in 0.01 M KOH, the presence of hydroxamate in concentrations of 10-3 M and above retards the rate of formation of Cu2O and indicates that a stability zone of copper ...
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    SERS spectroelectrochemical investigations have demonstrated that the flotation collector n-octanohydroxamate specifically adsorbs on copper surfaces in the region of thermodynamic stability of the metal and, at low ionic strength, this gives rise to a contact angle of ~ 70஠The contact angle fell to zero when Cu2O was formed on the copper surface and increased again to ~ 70͊when the potential was increased further. Voltammetry established that, in 0.01 M KOH, the presence of hydroxamate in concentrations of 10-3 M and above retards the rate of formation of Cu2O and indicates that a stability zone of copper n-octanohydroxamate replaces that of hydrated CuO. It is concluded that the development of a copper n-octanohydroxamate layer is responsible for the copper oxide surface being rendered hydrophobic at high potentials. SERS investigations of the copper/hydroxamate system is considered not to be an appropriate model for advancing understanding of the interaction of this collector with oxidized mineral surfaces.
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    Conference Title
    ELECTROCHEMISTRY IN MINERAL AND METAL PROCESSING 8 (EMMP 8)
    Volume
    28
    Issue
    6
    DOI
    https://doi.org/10.1149/1.3367899
    Subject
    Electrochemistry
    Mining engineering
    Publication URI
    http://hdl.handle.net/10072/36792
    Collection
    • Conference outputs

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