Copper;platinum | 12054-22-7

• 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: Copper;platinum
• 英文别名: copper;platinum
• CAS: 12054-22-7
• 化学式: Cu₃Pt
• 分子量: 385.718
• InChiKey: WXJJKGADSNZUHE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  4
• 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

• 作为产物：
  描述：

  铜 、 铂 以 melt 为溶剂， 生成 Copper;platinum
  参考文献：
  名称：

  一些贵金属（Cu、Ag、Au）和过渡金属的二元合金的高温直接合成量热法热化学

  摘要：

  摘要 通过高温直接合成量热法在 1372 K 下测量了一些贵金属-过渡金属化合物的标准生成焓。报告了以下结果（以 kJ/mol 原子为单位）：Cu51Zr14，-24.3±2.2；Cu3Pd，-7.6±1.2；Cu51Hf14，-22.9±2.3；Cu3Pt，-10.8±1.1；AgTi，-1.6±2.4；AgTi2，-2.3±1.1；Ag2Y，-26.6±1.2；Au2Sc，-83.4±1.8；Au4Sc，-57.3±1.5；金锰，-25.3±1.7；Au2Y，-84.6±1.8；Au3Y，-69.1±1.9；Au3Pd，-7.9±1.9。将结果与通过 EMF、蒸气压和量热法获得的一些早期实验值进行比较。还将它们与 Miedema 和同事的预测值进行比较。我们将展示生成焓如何与过渡金属的原子序数相关的系统图。

  DOI：

  10.1016/s0925-8388(02)00983-0

文献信息

• Facile Surfactant-Free Synthesis of Composition-Tunable Bimetallic PtCu Alloy Nanosponges for Direct Methanol Fuel Cell Applications
  作者：Yanna Hu、Taiyang Liu、Chaozhong Li、Qiang Yuan

  DOI：10.1071/ch18160

  日期：——

  Sponge-like metal nanomaterials have been paid great attention due to their unique structure for wide applications in hydrogen storage, filtration, sensors, heterogeneous catalysis, and fuel cells. Here, we first use a facile, bottom-up method to successfully prepare composition-tunable PtCu alloy nanosponges constructed with sub-4.5 nm particle building blocks. Due to the porous structure, structure defects, and synergetic effect of Pt and Cu, the PtCu alloy nanosponges exhibit good electrocatalytic performances towards methanol oxidation. Compared with pure Pt nanosponges, the specific/mass activity on PtCu2 alloy nanosponges is 5.84/2.93 times that on pure Pt nanosponges. Furthermore, the stability and reactivation ability of PtCu alloy nanosponges are also superior to pure Pt nanosponges.

  海绵状金属纳米材料因其独特的结构在储氢、过滤、传感器、异相催化和燃料电池等领域的广泛应用而备受关注。在这里，我们首次采用一种简便的、自下而上的方法，成功地制备出了由亚 4.5 纳米颗粒构建模块构成的成分可调的铂铜合金纳米海绵。由于多孔结构、结构缺陷以及铂和铜的协同效应，铂铜合金纳米海绵对甲醇氧化具有良好的电催化性能。与纯铂纳米海绵相比，PtCu2 合金纳米海绵的比/质量活性是纯铂纳米海绵的 5.84/2.93 倍。此外，PtCu 合金纳米海绵的稳定性和再活化能力也优于纯铂纳米海绵。
• Unique Excavated Rhombic Dodecahedral PtCu₃ Alloy Nanocrystals Constructed with Ultrathin Nanosheets of High-Energy {110} Facets
  作者：Yanyan Jia、Yaqi Jiang、Jiawei Zhang、Lei Zhang、Qiaoli Chen、Zhaoxiong Xie、Lansun Zheng

  DOI：10.1021/ja413209q

  日期：2014.3.12

  NCs with ultrathin nanosheets of high-energy 110} facets. The surface area was measured to be 77 m(2) g(-1) by CO stripping, although the particle size is about 50 nm. Electrochemical characterizations showed that the ERD PtCu3 NCs exhibit excellent electrocatalytic performance and high antipoisoning activity in comparison with commercial Pt black and PtCu3 alloy NCs with 111} surfaces.

  与普通的三维多面体纳米晶体 (NC) 相比，超薄晶体纳米片为特定晶面提供了极高的表面积，具有独特的物理和化学性质。然而，超薄金属纳米片倾向于自身卷曲或逐片组装，这可能会在很大程度上降低有效表面积，从而在很大程度上降低催化活性。在这里，我们报告了一种简便的湿化学路线，该路线允许制造具有高能 110} 面的超薄纳米片的新型挖掘菱形十二面体 (ERD) PtCu3 合金 NC。表面积被测量为 77 m(2) g(-1) 通过 CO 剥离，虽然粒度约为 50 nm。
• Platinum-Copper Rhombic Dodecahedral Nanoframes with Tunable Channels as Efficient Bifunctional Electrocatalysts for Fuel-Cell Reactions
  作者：Xiuhui Sun、Bin Huang、Xiaoneng Cui、Bin E、Yonggang Feng、Xiaoqing Huang

  DOI：10.1002/cctc.201701768

  日期：2018.3.7

  efficient chemical strategy for the controlled synthesis of platinum–copper (Pt–Cu) rhombic dodecahedral nanocrystals (RDH NCs) with highly composition‐segregated features. These solid Pt–Cu RDH NCs could be readily transformed into highly open Pt–Cu RDH nanoframes (NFs) with shapes and sizes that were not markedly changed after FeCl3 etching. All of the different Pt–Cu RDH NFs have the same PtCu3 phase

  具有相互连接的边缘和大表面积的三维（3D）纳米框架（NFs）代表了具有先进催化性能的新型纳米结构。在这里，我们报告了一种高效的化学策略，用于具有高度成分分离特征的铂-铜（Pt-Cu）菱形十二面体纳米晶体（RDH NCs）的受控合成。这些固态的Pt-Cu RDH NCs可以很容易地转变成高度开放的Pt-Cu RDH纳米框架（NFs），其形状和大小在FeCl 3蚀刻后没有明显改变。所有不同的Pt-Cu RDH NF具有相同的PtCu 3相位，但可调大小和不同的通道大小。NF的这些重要特性使其在氧还原反应（ORR）和甲醇氧化反应（MOR）方面的性能均优于商用Pt / C和Pt-Cu RDH NCs。特别是，在所有研究样品中，具有最大通道尺寸的PtCu 5 RDH NFs对ORR和MOR表现出最佳的活性，并且在耐久性测试后，其活性衰减小得多。这项工作强调了精确控制3 D NF结构在增强电催化电氧化中的重要性。
• Analysis of Surface Oxidation on Pt and Pt Core-Shell Electrocatalysts for PEFCs
  作者：Preethi Mathew、Jeremy P. Meyers、Ratndeep Srivastava、Peter Strasser

  DOI：10.1149/2.066205jes

  日期：——

  pure Pt proceeds via adsorbed oxide involving two electrons per site. A different mechanism for oxide growth on these catalysts was confirmed by the change in the Tafel slopes for anodic oxidation of the surface. The results showed that the core-shell catalyst surface is less oxidized and that the surface strain imposes a barrier to surface oxidation. This also explains the shift in the oxide stripping

  参考表面上形成的吸附中间体的性质和类型作为外加电位的函数，对 Pt-Cu/C 核壳电催化剂上表面氧化物的形成和还原进行了研究。使用 EQCM 结合循环伏安法进行原位测量以监测表面变化。已经对新型“核-壳”电催化剂、传统 Pt/C 电催化剂和无载体的 Pt 黑色电催化剂进行了比较。我们发现，随着阳极氧化过程中电位的增加，吸附物质的界面质量以连续线性方式增加。我们还发现证据表明，核壳电催化剂上的氧化物形成是通过形成每个表面位点一个电子的吸附羟基物质而发生的，而在纯 Pt 上则通过每个位点两个电子的吸附氧化物进行。表面阳极氧化的塔菲尔斜率的变化证实了这些催化剂上氧化物生长的不同机制。结果表明，核壳催化剂表面氧化较少，表面应变对表面氧化形成屏障。这也解释了在 Pt 二元合金催化剂中观察到的氧化物剥离峰的移动。表面阳极氧化的塔菲尔斜率的变化证实了这些催化剂上氧化物生长的不同机制。结果表明，核壳催化剂
• Structural characterizations of Cu3Pt electrocatalyst featuring Pt-rich surface layers synthesized via mechanical alloying and selective dissolution routes
  作者：Yi-Fan Hsieh、Yu-Chi Hsieh、Yuan-Chieh Tseng、Pu-Wei Wu、Cheun Guang Chao、Pang Lin、Jyh-Fu Lee

  DOI：10.1016/j.jallcom.2012.10.098

  日期：2013.3

  We demonstrate a selective electrochemical dissolution route to prepare Cu3Pt catalysts featuring Pt-rich surface layers (Cu3Pt-Pt rich surface) from mechanically alloyed Cu3Pt. These catalysts were investigated by X-ray diffraction and X-ray absorption spectroscopy, and were subjected to electrochemical analyses to evaluate their catalytic properties. With appropriate anodization, Cu3Pt entered an oxygen-evolving regime where the corrosive dissolution of Cu dominated the reaction. Selective dissolution was carried out to prepare Pt-rich layers at the surface, while Cu3Pt was left unreacted at the core. An increase in the anodization duration modified the sample morphology, with the redistribution of Pt atoms to thicken the surface layers. A charge transfer from Pt to Cu accompanied the structural transition from Cu3Pt to Cu3Pt-Pt rich surface upon selective dissolution, rendering the sample to be electronically similar to a metal Pt. However, compared to the metal Pt and conventional Pt-based catalysts, the proposed structure is a more economical catalyst for direct methanol fuel cell, with less need of Pt in raw material but increased electrochemical surface area by exposing enormous Pt at the surface with an increase in the anodization duration. (C) 2012 Elsevier B.V. All rights reserved.