simple self-assembly of Ni 2+ , H 2 C 2 O4 and N 2 H 4 created a new 3-D Ni 2+ coordination polymer, [Ni(C 2 O4 )(N 2 H 4 )]·H 2 O (C 2 O4 2− = oxalate, N 2 H 4 = hydrazine) 1 , in which C 2 O4 2− ligands link Ni 2+ ions into a left-hand helical Ni(C 2 O4 ) chain, while N 2 H 4 extends the Ni(C 2 O4 ) chains into a 3-D network with a 10 3 topology. A magnetic susceptibility study indicates that between
在水热条件下,Ni 2+,H 2 C 2 O 4和N 2 H 4的简单自组装产生了新的3-D Ni 2+配位聚合物[Ni(C 2 O 4)(N 2 H 4) )]·H 2 O(C 2 O 4 2- =草酸盐,N 2 H 4 =肼)1,其中C 2 O 4 2-配体将Ni 2+离子连接到左侧螺旋Ni(C 2 O 4)链,而N 2 H 4将Ni(C 2 O 4)链扩展为具有10 3拓扑的3-D网络。磁化率研究表明,在相邻的Ni 2+中心之间,存在反铁磁相互作用。
Controllable synthesis of NiC2O4·2H2O nanorods precursor and applications in the synthesis of nickel-based nanostructures
作者:Wei-Guo Tian、Pan-Pan Wang、Ling Ren、Gen-Ban Sun、Ling-Na Sun、Kai Yang、Bing-Qing Wei、Chang-Wen Hu
DOI:10.1016/j.jssc.2007.09.036
日期:2007.12
A controllable synthesis of NiC2O4 center dot 2H(2)O nanorods precursor was obtained via the microemulsion-mediated solvothermal method and a further synthesis of beta-Ni(OH)(2) nanorods, nickel oxide (NiO) sub-microtubes, Ni nanospheres and flower-like nickel complexes nanostructures by using the precursor. The morphologies and crystalline structures were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and the X-ray powder diffraction (XRD). The morphologies and sizes of the precursors can be readily tuned by adjusting experimental parameters of the reverse microemulsion system. The synthesized beta-Ni(OH)(2) nanorods composed of fine nanosheets shown excellent electrochemical performance as an electrode material in rechargeable battery systems. (c) 2007 Elsevier Inc. All rights reserved.