摘要:
Material que comprende tectómeros de oligoglicina y nanohilos. Este material es útil como electrodo, como material híbrido conductor y transparente, y como sensor de pH, así como en aplicaciones biomédicas.
摘要:
본 발명은, 나노금속과 탄소나노소재의 복합체 제조방법에 있어서, 전도성 탄소나노소재에 관능기를 도입하기 위해 탄소나노소재의 표면을 개질시키는 단계와; 표면 개질된 상기 탄소나노소재에 이소시아네이트계 화합물과 피리미딘계 화합물을 혼합하여 반응시킴에 의해 금속 이온과 반응성이 있는 탄소나노소재 분산액을 형성하는 단계와; 상기 탄소나노소재 분산액에 금속염 전구체, 환원제 및 용매를 첨가하여 나노금속 입자를 제조하는 단계와; 상기 탄소나노소재가 포함된 상기 나노금속 입자를 분리하는 단계를 포함하는 것을 기술적 요지로 한다. 이에 의해 탄소나노소재에 이소시아네이트계 화합물 및 피리미딘계 화합물을 혼합하여 반응시킴에 의해 금속 이온과 반응성이 있는 탄소나노소재를 첨가제로 사용하여 3차원 미만의 저차원 형상을 보이는 나노금속을 얻을 수 있다. 또한, 탄소나노소재와의 복합화가 나노금속을 형성과 동시에 이루어지고, 이소시아네이트계 화합물과 피리미딘계 화합물을 혼합하여 반응시켜 형성된 관능기에 의해 용매 분산성이 확보되어 전도성 잉크 또는 페이스트의 제조가 매우 용이한 효과가 있다.
摘要:
A method for synthesizing a metal chalcogenide nanocrystal (NC) material includes reacting a metal material and an ammonium chalcogenide material in an organic solvent material. The method provides that the metal chalcogenide nanocrystal material may be synthesized by a heating-up method at large scale (i.e., greater than 30 grams). Ammonium chalcogenide salts exhibit high reactivity and metal chalcogenide nanocrystals can be synthesized at low temperatures (i.e., less than 200 o C) with high conversion yields (i.e., greater than 90 percent).
摘要:
The present invention relates to a method for preparing metal oxide nanoparticles, comprising the steps: (i) subjecting a metal alkanoate to microwave radiation to obtain metal oxide nanoparticles, (ii) optionally washing the metal oxide nanoparticles obtained in step (i), and/or (iii) optionally storing the metal oxide nanoparticles in a dispersant.
摘要:
The invention discloses stabilized and/or functionalized polyamide compositions containing at least one stabilizing and/or functionalizing metallic salt and organoligand complex compound as a polymer additive. Said compositions contain a complex compound consisting of a combination of a copper salt and a 2-oxazoline derivative. The invention also discloses a method for producing a stabilized polyamide composition in which at least one polyamide and a metallic salt and organoligand complex compound are blended. The invention further discloses nitrato-[2,2'-meta-phenylene-bis-(4,5-dihydro-oxazole)]-argentate, nitrato-bis-(2-heneicosyl-4,5-dihydro-oxazole)-argentate, chloro-[2,2'-para-phenylene-bis-(4,5-dihydro-oxazole)]-cuprate und dichloro-[2,2'-para-phenylene-bis-(4,5-dihydro-oxazole)]-cuprate.
摘要:
Composite material comprising - one or more heat-activatable free-radical initiators selected from the group consisting of organic peroxides and/or initiators having labile carbon-carbon bonds and particles which have a core-shell structure and the core of which comprises one or more magnetic materials, while the shell comprises silicon dioxide.
摘要:
The invention pertains to synthesis of new nanomaterials in vacuum. A method to produce nanoparticles of metal-oxygen system by electron beam evaporation and condensation in vacuum is proposed, which includes simultaneous heating and evaporation of solid initial material and solid carrier material from at least two separate vessels in the vacuum chamber, mixing of vapour flows of initial material and carrier, deposition of mixed vapour flow on the substrate in the condensation zone with fixing of initial material nanoparticles on the substrate by carrier material which solidifies, and formation of nanoparticle condensate in the carrier, in which the initial material is selected from a group, which includes metals and their alloys (Me), micro- and nanosized porous structure of carrier material on the substrate is created by setting and maintaining substrate temperature in the range of formation of micro- and nanosized porous structure of carrier material and below 0.5 of carrier material melting, temperature, which results in production of condensate of nanoparticles with an open surface in micro- and nanosized porous structure of carrier material, dosed feed of oxygen / oxygen-containing gases, vapours and their mixtures into the vacuum chamber /condensation zone is performed after the process or during the process of condensate deposition on the substrate, chemical composition of initial material nanoparticles fixed in the micro- and nanosized porous structure of carrier material is changed due to physico- chemical interaction of open surface of nanoparticles with oxygen / oxygen- containing gases, vapours and their mixtures, which are fed into the vacuum chamber/ condensation zone, and metal-oxygen nanoparticles of the specified composition are produced. Used as the carrier material fixing the nanoparticles is a solid, soluble in liquid and evaporable in vacuum without decomposition simple or complex inorganic material selected from a group which includes chlorides of sodium, potassium, calcium, magnesium, boron oxide, sodium metaborate and their mixtures. In one of the embodiments of the method, the produced condensate of nanoparticles is subjected to further heat treatment in oxygen / oxygen- containing gases, vapours and their mixtures for modifying the composition, structure and dimensions of nanoparticles, which are located in carrier pores, dissolved in at least one liquid and a heterogeneous (colloid) system of the specified composition, size and structure is produced.
摘要:
An aqueous precipitation process for the preparation of particles comprising primarily silver sulfate, comprising reacting an aqueous soluble silver salt and an aqueous soluble source of inorganic sulfate ion in an agitated precipitation reactor vessel and precipitating particles comprising primarily silver sulfate, wherein the reaction and precipitation are performed in the presence of an aqueous soluble carboxylic acid additive or salt thereof, the amount of additive being a minor molar percentage, relative to the molar amount of silver sulfate precipitated, and effective to result in precipitation of particles comprising primarily silver sulfate having a mean grain-size of less than 70 micrometers.
摘要:
Die Erfindung betrifft Metall-Nanopartikel und Verfahren zu deren Herstellung, bei dem eine Metallsalzlösung in Gegenwart der derivatisierten Polyethylenimine bzw. Polyvinylamine mit einem Reduktionsmittel reduziert wird. Es können Metallsalzlösungen von zwei oder mehr verschiedenen Metallen gleichzeitig oder nacheinander reduziert werden, wobei Metall-Nanopartikel aus zwei oder mehr verschiedenen Metallen erhalten werden. Bevorzugte Metalle sind Silber, Palladium und Platin. Geeignete Reduktionsmittel sind beispielsweise Ameisensäure, Formaldehyd, Diethanolamin, 5-Pentensäure und Natriumborhydrid. Silber kann in Form von Silberoxid und/oder Silbernitrat eingesetzt werden, Palladium in Form von Alkalitetrachloropalladat oder Palladium(ll)nitrat und Platin in Form von Alkalitetrachloroplatinat oder Tetraaminplatin(ll)nitrat.