Synthesis of Te-Bi core-shell nanowires by two-step electrodeposition in ionic liquids
| Autor: | Nicolas Stein, Jaafar Ghanbaja, Sophie Legeai, Laura Thiebaud |
|---|---|
| Přispěvatelé: | Institut Jean Lamour (IJL), Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IMPACT N4S, ANR-15-IDEX-0004,LUE,Isite LUE(2015) |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Shell (structure) Nanowire chemistry.chemical_element Nanotechnology 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences Bismuth lcsh:Chemistry chemistry.chemical_compound Electrochemistry [CHIM]Chemical Sciences [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:Industrial electrochemistry lcsh:QD1-999 chemistry Chemical engineering Ionic liquid Crystallite 0210 nano-technology Tellurium Single crystal lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 86, Iss, Pp 30-33 (2018) Electrochemistry Communications Electrochemistry Communications, Elsevier, 2018, 86, pp.30-33. ⟨10.1016/j.elecom.2017.11.010⟩ |
| ISSN: | 1388-2481 |
| Popis: | Te-Bi core-shell nanowires were synthesized by electrochemical deposition in ionic liquids without using a template. The nanowires were synthesized in two steps: self-standing single crystal Te nanowires with a diameter of 76.2±28.4nm and a length of a few microns were electrodeposited first, taking advantage of the templating properties of the mixture of ionic liquids EOPipTFSI:EOPipBr 95:5 mole%. The Bi shell was then deposited on the Te core in EOPipTFSI. The influence of various experimental parameters on Bi shell deposition was studied. Thanks to the higher viscosity of the electrolyte compared to an aqueous medium, a lower growth rate is observed, leading to a thin layer of bismuth. In addition, High Resolution Transmission Electronic Microscopy shows that under optimal conditions the Te nanowires are entirely covered by a homogeneous, compact and polycrystalline Bi shell and that the core/shell interface is smooth. Keywords: Core-shell nanowires, Ionic liquid, Electrodeposition, Bismuth, Tellurium |
| Databáze: | OpenAIRE |
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