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Formation of bimetallic Au-Pd and Au-Pt nanoparticles under hydrothermal conditions and microwave irradiation / O. V. Belousov [et al.] // Langmuir. - 2011. - Vol. 27, Is. 18. - P. 11697-11703, DOI 10.1021/la202686x. - Cited References: 28 . - ISSN 0743-7463

РУБ Chemistry, Multidisciplinary + Chemistry, Physical + Materials Science, Multidisciplinary
Рубрики:
PROFILE REFINEMENT
   PALLADIUM BLACK
   SIZE
   CATALYSIS
   METAL
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.

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Доп.точки доступа:
Belousov, O. V.; Belousova, N. V.; Sirotina, A. V.; Solovyov, L. A.; Соловьев, Леонид Александрович; Zhyzhaev, A. M.; Жижаев, Анатолий Михайлович; Zharkov, S. M.; Жарков, Сергей Михайлович; Mikhlin, Y. L.
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