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Effective One-Step Gold Dissolution Using Environmentally Friendly Low-Cost Reagents

Authors

  • Dr. Angela Serpe,

    Corresponding author
    1. Dipartimento di Scienze Chimiche e Geologiche and Spin Off 3R Metals Ltd, Research Unit of INSTM, Università di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato (Italy), Fax: (+39) 0706754456
    • Dipartimento di Scienze Chimiche e Geologiche and Spin Off 3R Metals Ltd, Research Unit of INSTM, Università di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato (Italy), Fax: (+39) 0706754456
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  • Dr. Luciano Marchiò,

    1. Dipartimento di Chimica, Università di Parma, Parco Area delle Scienze 17a, 43100 Parma (Italy)
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  • Dr. Flavia Artizzu,

    1. Dipartimento di Scienze Chimiche e Geologiche and Spin Off 3R Metals Ltd, Research Unit of INSTM, Università di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato (Italy), Fax: (+39) 0706754456
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  • Prof. M. Laura Mercuri,

    1. Dipartimento di Scienze Chimiche e Geologiche and Spin Off 3R Metals Ltd, Research Unit of INSTM, Università di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato (Italy), Fax: (+39) 0706754456
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  • Prof. Paola Deplano

    Corresponding author
    1. Dipartimento di Scienze Chimiche e Geologiche and Spin Off 3R Metals Ltd, Research Unit of INSTM, Università di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato (Italy), Fax: (+39) 0706754456
    • Dipartimento di Scienze Chimiche e Geologiche and Spin Off 3R Metals Ltd, Research Unit of INSTM, Università di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato (Italy), Fax: (+39) 0706754456
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Abstract

original image

Digging for gold: Mixtures of tetraethylthiuram disulfide (Et4TDS) and I2 in acetone are capable of dissolving elemental gold and forming valuable metal complexes, in which the stoichiometry depends on the mixture composition. These mixtures can also etch the gold layer homogeneously and selectively from Si/SiO2/Ti/Au thin-layered structures under mild conditions (see figure).

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