Journal ArticleDOI
Formation of bimetallic Au-Pd and Au-Pt nanoparticles under hydrothermal conditions and microwave irradiation.
O. V. Belousov,N. V. Belousova,Anastasia V. Sirotina,Leonid A. Solovyov,Anatoly M. Zhyzhaev,Sergey M. Zharkov,Sergey M. Zharkov,Yuri Mikhlin +7 more
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TLDR
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.Abstract:
The reduction of chlorocomplexes of gold(III) from muriatic solutions by nanocrystal powders of palladium and platinum at 110 and 130 °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.read more
Citations
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Journal ArticleDOI
Microwave-assisted preparation of inorganic nanostructures in liquid phase.
Ying-Jie Zhu,Feng Chen +1 more
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Synthesis, Structure, Properties, and Applications of Bimetallic Nanoparticles of Noble Metals
Journal ArticleDOI
Bimetallic Nanoparticles: Enhanced Magnetic and Optical Properties for Emerging Biological Applications
TL;DR: In this paper, the authors summarized the predominant structures of bimetallic nanoparticles, outline their synthesis methods, and highlight their use in biological applications, both diagnostic and therapeutic, which are dictated by their various optical/plasmonic and magnetic properties.
Posted ContentDOI
Bimetallic Nanoparticles: Enhanced Magnetic and Optical Properties for Emerging Biological Applications
TL;DR: In this paper, the authors summarized the predominant structures of bimetallic nanoparticles, outline their synthesis methods, and highlight their use in biological applications, both diagnostic and therapeutic, which are dictated by their various optical/plasmonic and magnetic properties.
Journal ArticleDOI
Microwave-Assisted Synthesis of PdxAu100–x Alloy Nanoparticles: A Combined Experimental and Theoretical Assessment of Synthetic and Compositional Effects upon Catalytic Reactivity
Pranaw Kunal,Hao Li,Beth L. Dewing,Lei Zhang,Karalee Jarvis,Graeme Henkelman,Simon M. Humphrey +6 more
TL;DR: In this article, Pd-rich NPs were rapidly formed, into which Au atoms were subsequently incorporated to give the alloyed NPs, and the value of x in the PdxAu100-xNPs obtained can be finely controlled, allowing the surface electronic structure of the NPs to be broadly tuned.
References
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Journal ArticleDOI
A profile refinement method for nuclear and magnetic structures
TL;DR: In this paper, a structure refinement method was described which does not use integrated neutron powder intensities, single or overlapping, but employs directly the profile intensities obtained from step-scanning measurements of the powder diagram.
Journal ArticleDOI
Size effect on the melting temperature of gold particles
Philippe A. Buffat,JP Borel +1 more
TL;DR: In this article, the melting points of small gold particles have been measured using a scanning electron-diffraction technique and the experimental results are quantitatively in good agreement with two phenomenological models.
Journal ArticleDOI
Rietveld refinement of Debye–Scherrer synchrotron X‐ray data from Al2O3
TL;DR: In this paper, the application of the Rietveld refinement technique to synchrotron X-ray data collected from a capillary sample of Al2O3 in Debye-Scherrer geometry is described.
Journal ArticleDOI
Microwave chemistry for inorganic nanomaterials synthesis
TL;DR: This article is not meant to give an exhaustive overview of all nanomaterials synthesized by the microwave technique, but to discuss the new opportunities that arise as a result of the unique features of microwave chemistry.
Journal ArticleDOI
Microwave-Assisted Synthesis of Metallic Nanostructures in Solution
TL;DR: In this concept, advantageous application of microwave rapid heating for the one-pot synthesis of metallic nanostructures in solutions has been demonstrated by using some typical examples for the preparation of Ag, Au, Pt, and AuPd nanostructure.
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