Тип публикации: статья из журнала
Год издания: 2011
Идентификатор DOI: 10.1021/la202686x
Ключевые слова: Bimetallic particles, Chemical method, Chloro-complexes, Conventional heating, Core shell structure, Gold layer, Homogeneous materials, Hydrothermal conditions, Nanocrystal powders, Reductants, Solid-phase, Synthesis of particles, Gold, Gold compounds, Irradiation, Palladium, Photoelectron spectroscopy, Platinum, Transmission electron microscopy, X ray diffraction, X ray photoelectron spectroscopy, Microwave irradiation
Аннотация: The reduction of chlorocomplexes of gold(III) from muriatic solutions by nanocrystal powders of palladium and platinum at 110 and 130 degrees C under hydrothermal conditions and the action of microwave irradiation has been investigated. The structure and composition of the solid phase have been characterized by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and chemical methods. Bimetallic particles with a core-shell structure have been revealed. The obtained particles are established to have a core of the metal reductant covered with a substitutional solid (Au, Pd) solution in case of palladium, and isolated by a gold layer in the case of platinum. The main reason for such a difference is the ratio between the rates of aggregation and reduction. It has been shown by the example of the Au-Pd system that the use of microwave irradiation allows us not only to accelerate the synthesis of particles but also to obtain more homogeneous materials in comparison with conventional heating.
Издание
Журнал: LANGMUIR
Выпуск журнала: Vol. 27, Is. 18
Номера страниц: 11697-11703
ISSN журнала: 07437463
Место издания: WASHINGTON
Издатель: AMER CHEMICAL SOC
Персоны
- Belousov O.V. (Institute of Chemistry and Chemical Technology,Russian Academy of Sciences)
- Solovyov L.A. (Institute of Chemistry and Chemical Technology,Russian Academy of Sciences)
- Zhyzhaev A.M. (Institute of Chemistry and Chemical Technology,Russian Academy of Sciences)
- Mikhlin Y.L. (Institute of Chemistry and Chemical Technology,Russian Academy of Sciences)
- Belousova N.V. (Siberian Federal University)
- Sirotina A.V. (Siberian Federal University)
- Zharkov S.M. (L. V. Kirensky Institute of Physics,Russian Academy of Sciences)
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