IBS Publications Repository: Universal sulfide-assisted synthesis of M-Ag heterodimers (M = Pd, Au, Pt) as efficient platforms for fabricating metal-semiconductor heteronanostructures

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Universal sulfide-assisted synthesis of M-Ag heterodimers (M = Pd, Au, Pt) as efficient platforms for fabricating metal-semiconductor heteronanostructures

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Title: Universal sulfide-assisted synthesis of M-Ag heterodimers (M = Pd, Au, Pt) as efficient platforms for fabricating metal-semiconductor heteronanostructures

Author(s): Su-Un Lee; Jong Wook Hong; Sang-Il Choi; Sang Woo Han

Subject: Metals, ; Platinum, ; Reaction kinetics, ; Sulfur compounds, ; Synthesis (chemical), ; Dumbbell likes, ; Hetero-nanostructures, ; Heterodimers, ; Metal semiconductors, ; Semiconductor metals, ; Sulfidation reactions, ; Sulfide ions, ; Synthesis strategy, ; Palladium, ; gold, ; heterodimer, ; nanomaterial, ; palladium, ; platinum, ; article, ; chemical reaction kinetics, ; reduction kinetics, ; roentgen spectroscopy, ; scanning electron microscopy, ; semiconductor, ; surface property, ; synthesis, ; transmission electron microscopy, ; X ray photoelectron spectroscopy

Publication Date: 2014-04

Journal: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.136, no.14, pp.5221 - 5224

Publisher: AMER CHEMICAL SOC

Abstract: We report a universal sulfide-assisted synthesis strategy to prepare dumbbell-like M-Ag heterodimers (M = Pd, Au, Pt). Sulfide ions can give fine control over the reaction kinetics of Ag precursors, resulting in the anisotropic overgrowth of Ag to realize the dumbbell-like heterodimers irrespective of the surface facets or components of the M domain. The M-Ag heterodimers were facilely transformed to M-Ag2S heterodimers via a simple sulfidation reaction. This study provides a versatile approach to realizing not only metal-metal heterodimers but also semiconductor-metal heterodimers and will pave the way for designing heteronanostructures with unprecedented morphologies and functions. © 2014 American Chemical Society.