Electrochemistry Communications
Electrochemistry Communications
5 years ago

Fabrication of porous bismuth by electrochemical dealloying of Sn–Bi alloys: From microporous structures to nanowire matrix composites

Fabrication of porous bismuth by electrochemical dealloying of Sn–Bi alloys: From microporous structures to nanowire matrix composites
The fabrication of three-dimensional (3D) porous bismuth by electrochemical dealloying of two-phase Sn–Bi alloys was investigated. The results show that the resulting porous bismuth changes from a microporous structure composed of bismuth microparticles to an aligned nanowire matrix composite as the Bi content in the Sn–Bi master alloy decreases. Single-crystal bismuth nanowires growing in the [110] direction were fabricated by the selective dissolution of the Sn phase from an alloy with ultralow Bi content. The influence of the two states of elemental Bi existing in smelted Sn–Bi alloys during dealloying was systematically analyzed and discussed. This report presents a novel strategy for direct fabrication of bismuth nanowires by electrochemical dealloying.

Publisher URL: www.sciencedirect.com/science

DOI: S1388248117301649

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