One-Pot Synthesis of Reactive Base Metal Nanoparticles in Multifunctional Pyridine
One-Pot Synthesis of Reactive Base Metal Nanoparticles in Multifunctional Pyridine
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DOI：
10.1021/acsomega.9b00136
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发表时间：
2019-04-01
期刊：
影响因子：
4.1
通讯作者：
Feldmann, Claus
中科院分区：
文献类型：
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作者：
Egeberg, Alexander;Seifert, Tim P.;Feldmann, Claus
首次提出了吡啶介导的Zn-0、Sn-0、V-0和Mn-0纳米颗粒的一锅法合成。在本文中，吡啶是多功能的，用作溶剂、还原剂和表面稳定剂。所有金属均以具有5.5 +/-0.6nm（ZN（0））、5.1 +/-0.7nm（Sn-0）、5.3 +/-0.6nm（V-0）和6.9 +/-0.8nm（Mn-0）的非常小的尺寸的结晶球形纳米颗粒形式获得。简单金属氯化物（ZnCl 2、SnCl 2、VCl 3、MnCl 2）用作起始材料并在吡啶中加热（高压釜，210-300 ℃）。除了详细的颗粒表征（高分辨率透射电子显微镜、扫描透射电子显微镜、傅立叶变换红外（FT-IR）、X射线粉末衍射、元素分析）之外，还探索了反应机理（MS、NMR、FT-IR），表明吡啶作为还原剂被氧化成2，2 '-联吡啶。作为一种可靠而简单的合成策略，新型吡啶介导的方法可以高度相关，以获得高纯度的贱金属纳米颗粒，并作为下一步，以解决广泛的应用，如钢的表面处理，催化，高功率电池或储氢。
A pyridine-mediated, one-pot synthesis of Zn-0, Sn-0, V-0, and Mn-0 nanoparticles is presented for the first time. Herein, pyridine is multifunctional, serving as a solvent, a reducing agent, and a surface-stabilizing agent. All metals were obtained as crystalline, spherical nanoparticles with very small sizes of 5.5 +/- 0.6 nm (ZN(0)), 5.1 +/- 0.7 nm (Sn-0), 5.3 +/- 0.6 nm (V-0), and 6.9 +/- 0.8 nm (Mn-0). Simple metal chlorides (ZnCl2, SnCl2, VCl3, MnCl2.) were used as the starting materials and heated in pyridine (autoclave, 210-300 degrees C). In addition to detailed particle characterization (high-resolution transmission electron microscopy, scanning transmission electron microscopy, Fourier-transformed infrared (FT-IR), X-ray powder diffraction, elemental analysis), the mechanism of reaction was explored (MS, NMR, FT-IR), indicating pyridine as the reducing agent that was oxidized to 2,2'-bipyridine. As a reliable and simple synthesis strategy, the novel pyridine-mediated approach can be highly relevant to obtain high-purity base-metal nanoparticles, and as a next step, to address widespread applications such as surface finishing of steel, catalysis, high-power batteries, or hydrogen storage.