A Hydrothermal Reduction Route to Single‐Crystalline Hexagonal Cobalt Nanowires
A Hydrothermal Reduction Route to Single‐Crystalline Hexagonal Cobalt Nanowires
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DOI：
10.1002/ejic.200600061
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发表时间：
2006-06
影响因子：
2.3
通讯作者：
By-Qin Xie;Y. Qian;Shu-yuan Zhang;Shenquan Fu;Weichao Yu
中科院分区：
文献类型：
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作者：
By-Qin Xie;Y. Qian;Shu-yuan Zhang;Shenquan Fu;Weichao Yu
采用水热还原法合成了直径为150-300 nm、长度可达数百微米的六方密堆积钴纳米线。这些钴纳米线是通过在160 °C下在碱性溶液中用次磷酸盐（H2 PO 2-）还原柠檬酸钴（II）络合物而产生的。高分辨透射电镜和选区电子衍射表明，所制备的Co纳米线具有单晶结构，沿[001]方向生长。这些纳米线的室温磁滞回线显示出铁磁行为与增强的矫顽力。提出了这些钴纳米线的形成机制。（© Wiley-VCH Verlag GmbH & Co. KGaA，69451魏因海姆，德国，2006）
Hexagonal close-packed (hcp) cobalt nanowires with diameters of 150–300 nm and lengths of up to several hundreds of micrometers have been synthesized by a hydrothermal reduction method. These cobalt nanowires were generated by the reduction of cobalt(II) citrate complexes by hypophosphite (H2PO2–) in basic solution at 160 °C. High-resolution TEM and SAED reveal that the as-prepared Co nanowires have a single-crystalline structure with a [001] growth direction. The room-temperature hysteresis loop of these nanowires shows a ferromagnetic behavior with enhanced coercivity. A formation mechanism for these Co nanowires is proposed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)