gold copper | 12006-51-8

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 英文名称: gold copper
• 英文别名: gold copper dimer；gold-copper；Copper;gold
• CAS: 12006-51-8
• 化学式: AuCu
• 分子量: 260.512
• InChiKey: QRJOYPHTNNOAOJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  2
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  copper(II) acetate monohydrate 、 gold copper 以 further solvent(s) 为溶剂， 生成 Copper;gold
  参考文献：
  名称：

  Reacting the Unreactive:  A Toolbox of Low-Temperature Solution-Mediated Reactions for the Facile Interconversion of Nanocrystalline Intermetallic Compounds

  摘要：

  Metallurgical materials, including intermetallic compounds, are notoriously inert toward low-temperature reactivity. However, as nanocrystals, their reactivity is significantly enhanced. Here we show that intermetallic PtSn and AuCu nanocrystals can be converted, in solution at low temperatures, into derivative intermetallics. For example, PtSn can be converted into PtSn2 and Pt3Sn by reaction with SnCl2 and K2PtCl6, respectively. The reactions are also reversible, for example, the sequences PtSn --> PtSn2 --> PtSn and PtSn --> Pt3Sn --> PtSn are all readily achievable. The strategy also allows nanocrystalline AuCu to be successfully converted into AuCu3 via reaction with Cu(C2H3O2)2.H2O, suggesting that this approach may be general.

  DOI：

  10.1021/ja0627996
• 作为产物：
  描述：

  Copper;gold 以 neat (no solvent, solid phase) 为溶剂， 生成 gold copper
  参考文献：
  名称：

  Synthesis of Atomically Ordered AuCu and AuCu₃ Nanocrystals from Bimetallic Nanoparticle Precursors

  摘要：

  A new multistep approach was developed to synthesize atomically ordered intermetallic nanocrystals, using AuCu and AuCu3 as model systems. Bimetallic nanoparticle aggregates are used as precursors to atomically ordered nanocrystals, both to precisely define the stoichiometry of the final product and to ensure that atomic-scale diffusion distances lower the reaction temperatures to prevent sintering. In a typical synthesis, PVP-stabilized Au-Cu nanoparticle aggregates synthesized by borohydride reduction are collected by centrifugation and annealed in powder form. At temperatures below 175 degreesC, diffusion of Cu into Au occurs, and the atomically disordered solid solution CuxAu1-x exists. For AuCu, nucleation occurs by 200 degreesC, and atomically ordered AuCu exists between 200 and 400 degreesC. For AuCu3, an AuCu intermediate nucleates at 200 degreesC, and further diffusion of Cu into the AuCu intermediate at 300 degreesC nucleates AuCu3. Atomically ordered AuCu and AuCu3 nanocrystals can be redispersed as discrete colloids in solution after annealing between 200 and 300 degreesC.

  DOI：

  10.1021/ja031547r

文献信息

• Boosting the catalysis of AuCuMo for oxygen reduction: Important roles of an optimized electronic structure and surface electrochemical stability
  作者：Hongyu Gong、Ruizhi Yang、Bo Yang、Fan Li、Ling Li

  DOI：10.1016/j.jallcom.2020.155552

  日期：2020.10

  Abstract The slow kinetics of the oxygen reduction reaction (ORR) remains a great challenge in many energy storage and conversion devices, such as alkaline fuel cells and metal-air batteries. Herein, a self-supported Au-based alloy (AuCuMo) was successfully synthesized by a one-pot hydrothermal method. By combining Cu and Mo, the electronic structure of Au was finely tuned. Furthermore, the electrochemical

  摘要 氧还原反应（ORR）的缓慢动力学仍然是许多能量存储和转换装置（例如碱性燃料电池和金属空气电池）的一大挑战。在此，通过一锅水热法成功合成了一种自支撑金基合金（AuCuMo）。通过结合Cu和Mo，微调Au的电子结构。此外，Mo的掺入增强了表面Cu的电化学稳定性。利用这些优势，优化了氧和含氧中间体在AuCuMo上的反应，提高了本征活性。因此，与商业 Pt/C 催化剂相比，AuCuMo 表现出优异的 ORR 活性和稳定性。
• Transition-Metal-Ions-Induced Coalescence: Stitching Au Nanoclusters into Tubular Au-Based Nanocomposites
  作者：Yao Zhou、Hua Chun Zeng

  DOI：10.1002/smll.201503881

  日期：2016.5

  Alternatively, the above transition metal ions‐induced transformations can also be carried out after coating the AuNC assemblages with a layer of mesoporous SiO2 (mSiO2), giving rise to many mSiO2‐coated Au‐based HNRs. Onto the formed AuPd0.18 alloy HNRs, furthermore, a range of transition metal oxides such as TiO2, Co3O4, and Cu2O nanocrystals can be deposited easily to prepare metal oxide–AuPd0.18 HNRs

  金纳米团簇（AuNCs）的棒状组合物可作为自模板固体前体，通过过渡金属离子诱导的聚结产生管状金基纳米复合物。具体而言，当AuNC组合物与具有较高标准氧化电位的过渡金属离子（例如Cu（II），Ag（I），Pd（II）和Au（III））反应时，会形成一系列多晶和超薄的Au和Au x进一步还原可得到M y（其中M = Cu，Ag和Pd）合金空心纳米棒（HNRs）。对这些金属产品进行了甲醇的电氧化评估。另外，上述过渡金属离子诱导的转变也可以在用一层中孔SiO 2（mSiO 2），产生了许多m SiO 2涂层的金基HNR。此外，可以在形成的AuPd 0.18合金HNRs上轻松沉积一系列过渡金属氧化物，例如TiO 2，Co 3 O 4和Cu 2 O纳米晶体，以制备金属氧化物– AuPd 0.18 HNRs纳米复合材料。光催化剂。与传统的电置换反应相比，过渡金属离子诱导的AuNCs的可控聚结提供了一种新
• Features of the disorder→order phase transition in non-stoichiometric Cu-56at%Au alloy
  作者：A.Yu. Volkov、O.V. Antonova、A.V. Glukhov、D.A. Komkova、B.D. Antonov、A.E. Kostina、A.A. Livinets、K.N. Generalova

  DOI：10.1016/j.jallcom.2021.161938

  日期：2022.1

  (at%) alloy during the disorder↔order phase transitions of samples with different thermo-mechanical histories has been studied. It was found that the rate of atomic ordering of the Cu-56Au alloy was much lower compared to the equiatomic Cu-50Au alloy that had been well studied earlier. It was shown that the deformation of the quenched alloy slowed down the rate of atomic ordering. It was established that

  研究了在具有不同热机械历史的样品的无序↔有序相变过程中非化学计量 Cu-56Au (at%) 合金的结构、电阻率和显微硬度的演变。结果发现，与早先充分研究的等原子 Cu-50Au 合金相比，Cu-56Au 合金的原子有序率要低得多。结果表明，淬火合金的变形减慢了原子有序化的速度。已确定淬火合金在 250°C 下退火 1 周导致形成具有远程原子有序度S  ≈ 0.8的 CuAuI 相。该状态下合金的电阻率为ρ = (7.75 ± 0.04) × 10 = (7.75 ± 0.04) × 10 –8Ωm，这是该合金已知的最低值。结果表明，Cu-56Au 合金在高温下退火，然后缓慢冷却至室温，会形成有序的 CuAuII 相。在实验过程中，我们没有收到任何数据证实在合金加热和冷却时 CuAuII→CuAuI 转变。得出的结论是所研究合金中有序斜方晶 CuAuII 相具有高热稳定性。
• Low-Temperature Metallic Alloying of Copper and Silver Nanoparticles with Gold Nanoparticles through Digestive Ripening
  作者：Alexander B. Smetana、Kenneth J. Klabunde、Christopher M. Sorensen、Audaldo A. Ponce、Benny Mwale

  DOI：10.1021/jp0539932

  日期：2006.2.1

  of alloy particles. The particles of 5.6+/-0.5 nm diameter for Au/Ag and 4.8+/-1.0 nm diameter for Cu/Au undergo facile self-assembly to form 3-D superlattice ordering. It appears that during this digestive ripening process, the organic ligands display an extraordinary chemistry in which atom transfer between atomically pure copper, silver, and gold metal nanoparticles yields monodisperse alloy nanoparticles

  我们描述了一种引人注目的且简单的合金化过程，其中通过消化成熟以克为单位生产了贵金属金属间纳米颗粒。该方法涉及将分别制备的纯金和纯银或铜颗粒的胶体混合，然后在链烷硫醇的存在下加热回流。1小时后的结果是合金纳米颗粒。通过紫外可见光谱，EDX分析和高分辨率电子显微镜对根据该程序合成的颗粒进行了表征，其结果证实了合金颗粒的形成。Au / Ag的直径为5.6 +/- 0.5 nm，Cu / Au的直径为4.8 +/- 1.0 nm的粒子容易进行自组装以形成3-D超晶格有序。在这种消化成熟的过程中，
• Initial oxidation kinetics and energetics of Cu0.5Au0.5 (001) film investigated by in situ ultrahigh vacuum transmission electron microscopy
  作者：Liang Wang、Guang-Wen Zhou、Jeffrey A. Eastman、Judith C. Yang

  DOI：10.1016/j.susc.2006.03.044

  日期：2006.6

  energetics of Cu2O nucleation for Cu and Cu0.5Au0.5 oxidation was compared. Cu0.5Au0.5 oxidation has lower nucleation activation energy due to the reduced mismatch strain between Cu2O and Cu0.5Au0.5 films. On the other hand, the reaction kinetics for Cu0.5Au0.5 alloy oxidation is slower due to the higher diffusion activation energy of Cu. � 2006 Elsevier B.V. All rights reserved.

  通过原位超高真空透射电子显微镜研究 Cu0.5Au0.5 (0 0 1) 薄膜的初始氧化行为，以模拟具有一种活性组分和一种贵组分的合金的纳米氧化。在所研究的所有温度下都观察到不规则形状八面体 Cu2O 岛的形成，其具有立方体上立方体晶体取向到基底膜。比较了 Cu 和 Cu0.5Au0.5 氧化的 Cu2O 成核能量。由于Cu2O 和Cu0.5Au0.5 薄膜之间的错配应变降低，Cu0.5Au0.5 氧化具有较低的成核激活能。另一方面，Cu0.5Au0.5 合金氧化的反应动力学较慢，因为 Cu 的扩散活化能较高。 2006 Elsevier BV 版权所有。