Kyoto University

Japan Science and Technology Agency

Kyushu University

Oita University

Kyocera Corporation

Hiroshi Kitagawa

Kohei Kusada

Dongshuang Wu

Rie Makiura

Katsutoshi Nagaoka

Katsutoshi Sato

Syo Matsumura

Tomokazu Yamamoto

Hirokazu Kobayashi

Kazuyuki Fujie

Md Shahajahan Kutubi

Teppei Yamada

Xuan Quy Tran

A novel alloy nanoparticle which the alloy nanoparticle contains five or more types of elements, in the case where the alloy nanoparticle is directly supported on a carbon material carrier, the carbon material carrier excludes graphene or carbon fibers; an aggregate of alloy nanoparticles; a catalyst; a production method for alloy nanoparticles.

Alloy nanoparticle, aggregate of alloy nanoparticles, catalyst, and method for producing alloy nanoparticles

An alloy composed of three or more types of elements, wherein all the standard deviation of distribution in the alloy of each element constituting the alloy are 15 atomic % or less provides a novel alloy composed of three or more types of elements and having a high solid solution uniformity.

Alloy of at least three metal elements, aggregate of alloy nanoparticles, and catalyst

This invention provides an anisotropic nanostructure represented by the formula:RuM,wherein 0.6&#x2264;x&#x2264;0.999, and M represents at least one member selected from the group consisting of Ir, Rh, Pt, Pd, and Au, and wherein Ru and M form a solid solution at the atomic level, and the anisotropic nanostructure has an anisotropic hexagonal close-packed structure (hcp).

Anisotropic nanostructure, production method therefor, and catalyst

Disclosed are ruthenium nanoparticles having an essentially face-centered cubic structure. Disclosed is a method for producing ruthenium nanoparticles having an essentially face-centered cubic structure. This production method includes a step (i) of maintaining a solution containing ruthenium (III) acetylacetonate, polyvinylpyrrolidone, and triethylene glycol at a temperature of 180&#xb0; C. or higher.

Ruthenium nanoparticles with essentially face-centered cubic structure and method for producing the same

This invention provides a multinary solid solution fine particle represented by PdRuM(M is at least one member selected from the group consisting of Rh, Pt, Cu, Ag, Au and Ir. x+y+z=1, x+y=0.01 to 0.99, z=0.99 to 0.01, x:y=0.1:0.9 to 0.9:0.1), a method for producing the same, and a supported catalyst.

Multicomponent solid solution microparticles and method for producing same, and catalyst

A porous coordination polymer-ionic liquid composite according to the present invention includes an insulating structure composed of a porous coordination polymer, and an ionic liquid retained inside pores of the porous coordination polymer. The porous coordination polymer preferably has a main chain containing a typical metal element.

Porous coordination polymer-ionic liquid composite

The present invention provides an alloy fine particle including palladium and ruthenium, the alloy fine particle including at least one first phase in which the palladium is more abundant than the ruthenium and at least one second phase in which the ruthenium is more abundant than the palladium, the at least one first phase and the at least one second phase being separated by a phase boundary, the palladium and the ruthenium being distributed in the phase boundary in such a manner that the molar ratio of the palladium and the ruthenium continually changes, a plurality of crystalline structures being present together in the phase boundary.

Alloy microparticles and method for producing same, alloy microparticle cluster, catalyst, and method for producing same

Provided is a composite, including a metal nanoparticle inside a porous coordination polymer (PCP), in which the PCP is formed of a metal ion and an organic ligand.

Metal nanoparticle-PCP complex and manufacturing method therefor

The alloy fine particles of the present invention are fine particles of a solid solution alloy, in which a plurality of metal elements are mixed at the atomic level. The production method of the present invention is a method for producing alloy fine particles composed of a plurality of metal elements. This production method includes the steps of (i) preparing a solution containing ions of the plurality of metal elements and a liquid containing a reducing agent; and (ii) mixing the solution with the liquid that has been heated.

Fine solid solution alloy particles and method for producing same

The catalyst disclosed is a catalyst including palladium-ruthenium alloy fine particles in which palladium and ruthenium form a solid solution. The palladium-ruthenium alloy fine particles used in this catalyst can be produced by a production method including the step of maintaining a solution containing a protective agent, a reducing agent, a palladium compound or palladium ions, and a ruthenium compound or ruthenium ions at a temperature equal to or higher than a predetermined temperature.

Catalyst using Pd-Ru solid solution alloy fine particles

The alloy fine particles of the present invention are fine particles of a solid solution alloy, in which a plurality of metal elements are mixed at the atomic level. The production method of the present invention is a method for producing alloy fine particles composed of a plurality of metal elements. This production method includes the steps of: (i) preparing a solution containing ions of the plurality of metal elements and a liquid containing a reducing agent; and (ii) mixing the solution with the liquid that has been heated.

The three-dimensional structure of the present invention is a three-dimensional structure formed on a base. This three-dimensional structure contains a plurality of porphyrins, a plurality of first metal ions, and a plurality of specific organic molecules. The porphyrin contains two or more functional groups. The first metal ion is a metal ion for linking the functional group of one porphyrin to the functional group of another porphyrin. The above specific organic molecule is an organic molecule that forms a coordinate bond with a metal ion contained in the two-dimensional structure and that has only one site to coordinate to the metal ion.

Growing community of inventors

Nara, Japan

Hiroshi Kitagawa