Issue 102, 2015

Cost-effective aqueous-phase synthesis of long copper nanowires

Abstract

This work describes a simple and aqueous-phase route for the synthesis of Cu nanowires (Cu NWs) having a long length of 140−180 μm, a high aspect ratio of more than 350, and long-term stability. High-quality Cu NWs were synthesized by reduction of CuCl2 with ascorbic acid in the presence of branched polyethyleneimine (BPEI) in an aqueous solution at 90 °C. The synthesized uniform Cu NWs showed long-term stability without the formation of Cu oxides on the surface of the NWs after being stored at room temperature for 40 days. Interestingly, we found that Cl in the reacting solution played a key role in the formation of long Cu NWs. We also investigated the influence of various experimental conditions including the weight ratio of BPEI/CuCl2, the pH of the reacting solution, and the reaction temperature on the length, morphology, and stability of Cu NWs.

Graphical abstract: Cost-effective aqueous-phase synthesis of long copper nanowires

Supplementary files

Article information

Article type
Paper
Submitted
06 Aug 2015
Accepted
28 Sep 2015
First published
29 Sep 2015

RSC Adv., 2015,5, 83880-83884

Cost-effective aqueous-phase synthesis of long copper nanowires

Z. Tang, A. Shahzad, W. Kim and T. Yu, RSC Adv., 2015, 5, 83880 DOI: 10.1039/C5RA15751J

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