Patent application number | Description | Published |
20100210454 | NANOCOMPOSITE CATALYST MATERIALS COMPRISING CONDUCTIVE SUPPORT (CARBON), TRANSITION METAL COMPOUND, AND METAL NANOPARTICLES - The present invention is generally directed to a nanocomposite catalyst material for electrochemical devices such as fuel cells, comprising metal nanoparticles impregnated on a conductive support that is coated with a transition metal compound. The metal nanoparticles may comprise platinum; the metal phosphate may comprise tantalum oxyphosphate, niobium oxyphosphate, tantalum oxide, niobium oxide, or any combination thereof; and the conductive support may comprise carbon. In addition, the present invention provides for a method of making the catalyst material. | 08-19-2010 |
20100314008 | Sonochemically Mediated Preparation of Nanopowders of Reactive Metals - A nanopowder and a method of making are disclosed. The nanopowder may be in the form of nanoparticles with an average size of less than about 200 nm and contain a reactive transition metal, such as hafnium, zirconium, or titanium. The nanopowder can be formed in a liquid under sonication by reducing a halide of the transition metal. | 12-16-2010 |
20100314578 | Metal-Based Nanoparticles and Methods for Making Same - The present invention is directed to a method for producing novel metal nanoparticles and nanomaterials. The method involves mixing one or more metal halide starting materials, one or more lithium reducing agent and one or more solvents. In an exemplary embodiment, the resultant metal nanoparticles are substantially free from impurities and have a novel porous and substantially hollow structure. | 12-16-2010 |
20120090743 | METAL HYDRIDE NANOPARTICLES - A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides. | 04-19-2012 |
20140147364 | Sonochemical Synthesis of Boron and Boron-Carbon Nanomaterials by Alkali Metal Reduction - A method of preparing a nanomaterial comprising boron includes sonicating a boron trihalide and/or boron alkoxide in a hydrocarbon solvent with an alkali metal under an inert atmosphere to form a dark solid, and annealing the dark solid at a temperature sufficient to sublime alkali metal salt therein, thereby obtaining a boron nanomaterial. Reacting with a Group IVB metal produces a metal boride, and combining an alkali metal salt of a hydrocarbon with the boron trihalide prior to sonicating produces a carbonaceous boron material. | 05-29-2014 |
20140311293 | Preparation of Nanopowders of Reactive Metals via Reduction Under Sonication - A nanopowder and a method of making are disclosed. The nanopowder may be in the form of nanoparticles with an average size of less than about 200 nm and contain a reactive transition metal, such as hafnium, zirconium, or titanium. The nanopowder can be formed in a liquid under sonication by reducing a halide of the transition metal. | 10-23-2014 |
20160107950 | METAL HYDRIDE NANOPARTICLES - A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides. | 04-21-2016 |