Metal Nanoalloy Synthesis By Solvothermal Hot Injection Technique
| Autoři | |
|---|---|
| Rok publikování | 2018 |
| Druh | Konferenční abstrakty |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | The synthesis of nanoalloys is one integral part of nanoscience and development of efficient preparative methods is a challenging task due to their chemical, phase, and morphological variability. Nanoparticles of metal alloys exhibit many interesting properties, such as depression of melting point, plasmon resonance, catalytic activity and magnetic properties. Nanoalloys can be prepared by many approaches, but the solvothermal synthesis, specifically in oleylamine is highly advantageous. Hot injection technique should ensure homogeneous conditions for nanoparticle nucleation and growth. AgNi and AgCu nanoparticles were synthetized by injection of metal precursors oleylamine solution to a mixture of oleylamine and octadecene at 230 °C. After 10 minutes, the reaction mixture was cooled down to room temperature in a water bath. Nanoparticles were isolated, purified, dispersed in hexane and characterized. Size, shape, morphology, elemental distribution, optical and magnetic properties were described by using various techniques. Core/shell structure of AgNi, importance of used precursors to final morphology of AgCu and simple technique for Janus or solid solution synthesis were demonstrated. The results of this research have been acquired within the CEITEC 2020 (LQ1601) project with financial contribution made by the MEYS CR within special support paid from the National Program for Sustainability II funds and by the Czech Science Foundation (GA 17-15405S). CIISB research infrastructure project LM2015043 funded by MEYS CR is gratefully acknowledged for the financial support of the measurements at the CF X-ray Diffraction and Bio-SAXS and at the CF Cryo-electron Microscopy and Tomography CEITEC MU. STE M-EDS was carried out with the support of CEITEC Nano Research Infrastructure (ID LM2015041, MEYS CR, 2016–2019), CEITEC Brno University of Technology and was performed as part of a user project through Oak Ridge National Laboratory’s Center for Nanophase Materials Sciences, which is a U.S. Department of Energy (DOE) Office of Science user facility along with instrumentation provided by the DOE Office of Nuclear Energy, Fuel Cycle R&D Program, and the Nuclear Science User Facilities. |
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