Self-assembly mechanism of Ni nanowires prepared with an external magnetic field

Beilstein Journal of Nanotechnology

Kenan Xie¹  Li Liao¹  Hu Wang¹  Xiaoyu Li¹  Qin Long¹  Xuefei Lai¹ 

[1] School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China;

关键词: chemical reduction;    external magnetic field;    Ni nanoparticles;    Ni nanowires;    self-assembly mechanism;   

DOI  :  10.3762/bjnano.6.217

来源: DOAJ

【 摘 要 】

Nickel nanowires with a mean diameter of about 95 nm and lengths of up to 26 μm were prepared by a chemical reduction method in aqueous solution under an external magnetic field. The self-assembly mechanism was investigated in detail. The results indicate that the self-assembly process of Ni nanowires consists of three stages: nucleation and growth, ordered alignment and self-assembly, and deposition on the surface and gaps between the nickel particles. The self-assembly phenomenon occurs only when nickel particles grow to a size of about 60 nm in the reaction system. This critical size, which is proposed for the first time, is very important to comprehend the self-assembly mechanism of Ni nanowires prepared with an external magnetic field.

【 授权许可】

Unknown