Low-Temperature Large-Scale Synthesis and Electrical Testing of Ultralong Copper Nanowires

Abstract

Copper nanowires (NWs) with uniform diameters and lengths ranging from several hundreds of nanometers to several micrometers have been prepared with high yield by a simple hydrothermal procedure. The X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS) analysis data indicate that the copper nanowires are free of any contamination, while the electron diffraction (ED) analysis has revealed the nanowires to be single crystals. The nanowire growth mechanism has also been discussed. Hexadecylamine is the surface stabilizing agent in our method, while glucose facilitates formation of single-crystalline seeds on which the copper nanowires grow. The electrical properties of the as-synthesized copper NWs have also been investigated.

Hierarchical tubular structures constructed from ultrathin TiO2(B) nanosheets for highly reversible lithium storage

“…In this method, highly uniform Cu nanowires with smooth surfaces (Fig. S1, see ESI †) synthesized by a hydrothermal process 29 were employed as templates. The Cu nanowires were first uniformly coated with a layer of TiO 2 (B) through a solvothermal process with ethylene glycol as the solvent and TiCl 3 as the precursor.…”

The Roles of Hydrazine and Ethylenediamine in Wet Synthesis of Cu Nanowire

“…Many authors have studied different kinds methods to synthesize copper nanowires, including synthesis using template materials [1][2][3][4][5][6], solvothermal or hydrothermal [7,8], and wet synthesis [9][10][11][12][13]. Although the template technique produces a quite clean and straight copper nanowires, but the process requires cleaning the sacrificed materials which considered as a delicate and time-consuming process.…”

“…However, these are still used as powerful techniques to synthesize nanowire in the high crystalline ratio. The wet synthesis in producing copper nanowires had been explored by many authors using different capping agents and reductors [8][9][10][11][12][13]. Perhaps, the simplest and fastest in producing copper nanowire in wet synthesis is done using copper salt, N 2 H 4 (hydrazine) as a reductor, and an amine group as a capping agent such as done by Rathmell and his group [11][12].…”

“…The used of hexadecylamine as the capping and stabilizing agent and glucose in synthesizing ultralong CuNWs was done in Ref. 13. However, this process might still be considered as a long time one.…”

Synthesis of different copper nanostructures by the use of polyol technique

“…Copper nanostructures are widely employed in nanoelectronics and catalysts [1][2][3] as well as transparent conductive electrodes [4][5][6][7]. Several methods have been introduced for the synthesis/production of nanostructured copper, including chemical/sonochemical techniques [8,9], metal vapor [10] and microemulsion techniques [11].…”