Characterization and Growth Mechanism of Nickel Nanowires Resulting from Reduction of Nickel Formate in Polyol Medium
Characterization and Growth Mechanism of Nickel Nanowires Resulting from Reduction of Nickel Formate in Polyol Medium
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DOI：
10.1155/2016/9058686
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发表时间：
2016-01-01
影响因子：
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通讯作者：
Lyakhov, Nikolay Z.
中科院分区：
文献类型：
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作者：
Logutenko, Olga A.;Titkov, Alexander I.;Lyakhov, Nikolay Z.
在乙二醇介质中，在没有任何表面活性剂或封端剂用于引导颗粒生长的情况下，通过用水合肼还原甲酸镍来合成镍线性纳米结构。研究了反应温度、还原时间、多元醇种类、甲酸镍浓度等合成条件对还原产物的影响。用X射线衍射、扫描电镜和透射电镜对镍纳米线的尺寸和形貌进行了表征。结果表明，镍纳米晶为面心立方结构的线状纳米晶。乙二醇被发现在镍纳米线的形成中起着至关重要的作用。讨论了在110 ℃和130 ℃下线状粒子可能的生长过程。结果表明，在一定的合成条件下，镍纳米线生长在镍与水合肼的固体中间体的晶体表面。
Nickel linear nanostructures were synthesized by reduction of nickel formate with hydrazine hydrate in ethylene glycol medium in the absence of any surfactants or capping agents for direction of the particles growth. The effect of the synthesis conditions such as temperature, reduction time, type of polyol, and nickel formate concentration on the reduction products was studied. The size andmorphology of the nickel nanowires were characterized by X-ray diffraction, scanning, and transmission electron microscopy. It was shown that the nickel nanocrystallites were wire-shaped with a face-center-cubic phase. Ethylene glycol was found to play a crucial role in the formation of the nickel nanowires. The possible growth processes of the wire-shaped particles taking place at 110 and 130 degrees C are discussed. It was shown that, under certain synthesis conditions, nickel nanowires grow on the surface of the crystals of the solid intermediate of nickel with hydrazine hydrate.