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    • 1. 发明专利
    • Nanoparticle sysnthesis method
    • NANOPARTICLE SYSNTHESIS方法
    • JP2008044817A
    • 2008-02-28
    • JP2006222289
    • 2006-08-17
    • 3R CorpJapan Science & Technology Agency株式会社スリー・アール独立行政法人科学技術振興機構
    • TAKAMURA HITOSHIOKADA MASUOSUGAI HIROSHIWATANABE MASAHITO
    • C01B13/32B82B3/00C01F17/00C01G49/06
    • PROBLEM TO BE SOLVED: To provide a technology by which functional oxide nanoparticles having a uniform particle diameter can be easily synthesized.
      SOLUTION: The nanoparticle synthessis apparatus 1 is equipped with an ultraviolet laser beam source 2, a laser beam reflection mirror 3, a reaction vessel 4, and a solvent solution 5 of a metal salt charged into the reaction vessel 4. In the reaction vessel 4, a solution obtained by dissolving the metal salt into a solvent is stored. The suitability of the solvent depends on the absorption performance in an ultraviolet region. An alcohol is not required as a solvent for cerium nitrate. An alcohol solvent is however required depending on the kinds of salts (e.g., iron-based salt). Fig.4 shows the results obtained by calculating the dependency of the particle diameter, the lattice constant, obtained by using X-ray diffraction pattern, and the yield of cerium oxide on laser output. From the Fig.4, it is found that cerium oxide nanoparticles having an average diameter of 2 nm are synthesized and the yield of the nanoparticles is increased as the laser output is increased while maintaining the particle diameter, and further, the lattice constant and the particle diameter hardly depend on the output and are kept constant.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供可以容易地合成具有均匀粒径的功能性氧化物纳米粒子的技术。 解决方案:纳米颗粒合成装置1配备有紫外激光束源2,激光束反射镜3,反应容器4和装入反应容器4中的金属盐的溶剂溶液5.在 储存反应容器4,将金属盐溶解在溶剂中得到的溶液。 溶剂的适用性取决于紫外线区域的吸收性能。 不需要酒精作为硝酸铈的溶剂。 然而,根据盐的种类(例如铁基盐),需要醇溶剂。 图4显示了通过计算通过使用X射线衍射图获得的粒径,晶格常数和氧化铈在激光输出上的产率的依赖性而获得的结果。 从图4可以看出,合成了平均直径为2nm的氧化铈纳米粒子,随着激光输出的增加而保持粒径,纳米粒子的收率也提高了,晶格常数和 粒径几乎不依赖于输出并保持恒定。 版权所有(C)2008,JPO&INPIT
    • 2. 发明专利
    • Manufacturing method of nanoparticle with particle size of 200 nm or less
    • 200 nm或更小颗粒尺寸的纳米颗粒的制备方法
    • JP2008221207A
    • 2008-09-25
    • JP2008028489
    • 2008-02-08
    • 3R Corp株式会社スリー・アール
    • WATANABE MASAHITOSUGAI HIROSHI
    • B01J19/12B22F9/02B22F9/24B22F9/30C01B13/14C01G49/00
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of nanoparticles with a particle size of 200 nm or less that is capable of easily manufacturing an inorganic nanoparticle colloidal solution and nanoparticles of a multi-component alloy or multi-component compound of an arbitrary composition with excellent recovery efficiency and with good quality.
      SOLUTION: The nanoparticle of 200 nm or less is manufactured by pulse-radiating laser beam of less than 400 nm to a raw material liquid (where, excluding one containing polysilane). A nanoparticle dispersing agent is preferably added into the raw material liquid. When the nanoparticle to be produced is a Pt nanoparticle, a raw material liquid prepared by dissolving platinum chloride (IV) hexahydrate (H
      2 Pt(IV)Cl
      6 -6H
      2 O) in ethanol (C
      2 H
      5 OH) is used. When the nanoparticle to be manufactured is a Fe nanoparticle, the raw material liquid prepared by dissolving iron (III) acetyl acetonate (Fe(III)(C
      5 H
      7 O
      2 )
      3 ) of a complex in ethanol (C
      2 H
      5 OH) is used. The raw material liquid prepared by dissolving platinum chloride (IV) hexahydrate (H
      2 Pt(IV)Cl
      6 -6H
      2 O) in ethanol (C
      2 H
      5 OH) is used when the nanoparticle to be manufactured is a Pt nanoparticle.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供粒径为200nm以下的能够容易地制造无机纳米粒子胶体溶液的纳米粒子和多组分合金或多组分化合物的纳米粒子的制造方法, 任意组合,具有优良的回收效率和良好的品质。 解决方案:200nm以下的纳米粒子通过对小于400nm的脉冲辐射激光束与原料液(除了含有聚硅烷的激光束)制造。 优选在原料液中添加纳米粒子分散剂。 当待制备的纳米颗粒是Pt纳米颗粒时,将通过溶解六水合氯化铂(IV)(H SB 2 Pt)(IV)Cl <6> SB> 2 O)在乙醇(C 2 H 5>)中。 当要制造的纳米颗粒是Fe纳米颗粒时,将通过将乙酰丙酮酸铁(III)(Fe(III)(C(S))和(C) SB> 2 3)在乙醇中的复合物(C 2 5S)。 通过将六氯化钛(IV)六水合物(H 2 SBB)与四氢呋喃溶解在乙醇中制备的原料液 当制造的纳米颗粒是Pt纳米颗粒时,使用(C 2 H 5)。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Method and apparatus for producing nanoparticle
    • 用于生产纳米颗粒的方法和装置
    • JP2008246394A
    • 2008-10-16
    • JP2007091897
    • 2007-03-30
    • 3R CorpTohoku Univ国立大学法人東北大学株式会社スリー・アール
    • WATANABE MASAHITOSUGAI HIROSHITAKAMURA HITOSHI
    • B01J19/12B22F9/00B22F9/02
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for producing a nanoparticle, in each of which the high-quality nanoparticle can be produced with excellent controllability on the basis of a new production principle using microspace.
      SOLUTION: The method for producing the nanoparticle comprises the steps of: supplying a precursor solution to a microreactor 11 having 5 μm to 5 mm typical length from a flow passage 12; and irradiating the precursor solution supplied to the microreactor 11 with a single energy beam or a plurality of combined energy beams selected from a laser beam, an electromagnetic wave, corpuscular radiation and an ultrasonic wave each of which is emitted from an irradiation beam generation unit 13 to produce the nanoparticle.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 待解决的问题:提供一种制造纳米粒子的方法和装置,其中每个都可以基于使用微空间的新生产原理,以优异的可控制性制造高质量的纳米粒子。 解决方案:制备纳米颗粒的方法包括以下步骤:将前体溶液从流路12提供至典型长度为5μm至5mm的微反应器11; 以及从照射光束产生单元13发射的激光束,电磁波,红外辐射和超声波中选择的单能量束或多个组合能量束照射供给到微反应器11的前体溶液 以产生纳米颗粒。 版权所有(C)2009,JPO&INPIT