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SYNTHESIS OF NANOPARTICLES COMPRISING OXIDATION SENSITIVE METALS WITH TUNED PARTICLE SIZE AND HIGH OXIDATION STABILITY

机译：粒径大小适中且氧化稳定性高的含氧化敏感金属的纳米颗粒的合成

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摘要

Process for the synthesis of nanoparticles comprising oxidation sensitive metals, in particular copper comprising the following steps: Preparation and nucleation of citrate-capped Metal-hydroxide nanoparticles, reduction of the intermediate citrate-capped Metal-hydroxide nanoparticles to Metal⁰ by reduction via NaBH₄ Cu⁰ nanoparticles with narrow size distribution are obtained by NaBH₄ Li-induced reduction of CUCI₂ 2H₂O in diethylene glycol. The course of the reaction essentially involves an intermediate formation of Cu(OH)₂ nanoparticles as well as the presence of citrate to control the nucleation of almost monodisperse and non-agglomerated Cu⁰ nanoparticles. The citrate-capped Cu⁰ nanoparticles of the invention are surprisingly stable against air oxidation. Via simple solvent evaporation, porous Cu⁰ thin-films are prepared on glass substrates that exhibit bulk-like sheet resistances of 0.23 - 0.42 Ω_ϛ after vacuum sintering at 250 °C (bulk-Cu sheet under similar conditions with: 0.3 Ω_ϛ). With these features the as-prepared, citrate-capped Cu⁰ nanoparticles become highly relevant to electronic devices in particular thin-film electronics, thin-film sensors and high-power batteries.

机译：包含对氧化敏感的金属，特别是铜的纳米粒子的合成方法，包括以下步骤：柠檬酸盐封端的金属氢氧化物纳米粒子的制备和成核，将柠檬酸盐封端的金属氢氧化物纳米粒子还原为Metal ^{0 4 Li诱导的CUCI _{2还原反应获得NaPH _{4 Cu ^{0 纳米粒子乙二醇中的 2H _{2 O。反应过程主要涉及Cu（OH）_{2 纳米粒子的中间形成以及柠檬酸盐的存在，以控制几乎单分散和未团聚的Cu ^{0 纳米粒子。令人惊讶地，本发明的柠檬酸盐封端的Cu ^{0 纳米颗粒对空气氧化稳定。通过简单的溶剂蒸发，在玻璃基板上制备了多孔Cu ^{0 薄膜，在250°C的真空烧结后，其块状薄层电阻为0.23-0.42Ω_{ϛ （体铜板在类似条件下具有：0.3Ω_{ϛ ）。具有这些特征的柠檬酸盐封端的Cu ^{0 纳米粒子与电子设备特别是薄膜电子设备，薄膜传感器和大功率电池高度相关。}}}}}}}}}}}}

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公开/公告号WO2012152740A2

专利类型
公开/公告日2012-11-15

原文格式PDF
申请/专利权人 BAYER INTELLECTUAL PROPERTY GMBH;RAUSCHER FRANK;FELDMANN CLAUS;KIND CHRISTIAN;LU HUACHANG;KÖHLER KAREN;MLECZKO LESLAW;
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申请/专利号WO2012EP58339
发明设计人 MLECZKO LESLAW;LU HUACHANG;FELDMANN CLAUS;KIND CHRISTIAN;KÖHLER KAREN;RAUSCHER FRANK;
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申请日2012-05-07
分类号B22F1/00;B22F1/02;B22F9/24;H01L21/304;H05K3/10;H01L31/0352;
国家 WO
入库时间 2022-08-21 16:36:33

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