Stirring revealed new functions of ethylenediamine and hydrazine in the morphology control of copper nanowires

Nanoscale ◽  
2019 ◽  
Vol 11 (24) ◽  
pp. 11902-11909 ◽  
Author(s):  
Juan Zhang ◽  
Xiaona Li ◽  
Dongmei Liu ◽  
Shuai Wang ◽  
Jiaxu Yan ◽  
...  
Keyword(s):  
Morphology Control ◽  
Copper Nanowires ◽  
Cu Nanowires

New roles of ethylenediamine and hydrazine in synthesizing Cu nanowires are identified under the inspiration of stirring-based morphology control.

A long-term oxidation barrier for copper nanowires: graphene says yes

2015 ◽  
Vol 17 (6) ◽  
pp. 4231-4236 ◽  
Author(s):  
Liangjing Shi ◽  
Ranran Wang ◽  
Haitao Zhai ◽  
Yangqiao Liu ◽  
Lian Gao ◽  
...  
Keyword(s):  
Oxidation Kinetics ◽  
Copper Nanowires ◽  
Cu Nanowires ◽  
Stability Investigation

Cu nanowire oxidation kinetics is proposed, and the protecting mechanism of transferred graphene on Cu nanowires is proved by stability investigation.

Electrochemical Degradation of p-Nitrophenol on Cu Nanowires and Nanocubes

2019 ◽  
Vol 814 ◽  
pp. 76-82 ◽  
Author(s):  
Wen Ming Zhang ◽  
Mu Wei Ji ◽  
Jin Wang
Keyword(s):  
Catalytic Activity ◽  
Copper Nanowires ◽  
Electrochemical Degradation ◽  
One Pot ◽  
Cu Nanowires ◽  
First Order ◽  
Cu Catalysts ◽  
Nitrophenol Degradation

{100}-faceted copper nanostructures with different morphology of nanowires and nanocubes have been prepared by one-pot method. The electroactivity of Cu nanowires and nanocubes was evaluated by degradation of p-nitrophenol. As-prepared copper nanowires exhibit higher catalytic activity for p-nitrophenol degradation than copper nanocubes, and outperform most of Cu catalysts reported in literature. Electrochemical reductive reaction of p-nitrophenol is shown to be kinetically first-order.

Promising wet chemical strategies to synthesize Cu nanowires for emerging electronic applications

Nanoscale ◽  
2015 ◽  
Vol 7 (41) ◽  
pp. 17195-17210 ◽  
Author(s):  
D. V. Ravi Kumar ◽  
Kyoohee Woo ◽  
Jooho Moon
Keyword(s):  
Chemical Synthesis ◽  
Copper Nanowires ◽  
Cu Nanowires ◽  
Wet Chemical Synthesis ◽  
Wet Chemical ◽  
Chemical Strategies

This review summarizes the wet chemical synthesis strategies, properties, and applications of copper nanowires.

Nonlinear Optical Properties of Controlled Fabrication of Copper Nanowires by a Shadow Deposition

2012 ◽  
Vol 622-623 ◽  
pp. 777-780
Author(s):  
Kitsakorn Locharoenrat
Keyword(s):  
Optical Properties ◽  
Cross Section ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Geometrical Shape ◽  
Copper Nanowires ◽  
Cu Nanowires ◽  
Aspect Ratios ◽  
Materials Used ◽  
New Applications

The strongly geometrical shape, high aspect ratios, and nanoscale cross-section of nanowires is expected to affect optical properties through confinement effects. Herein we have investigated optical properties of Cu nanowires with studies of second harmonic generation (SHG) spectra. These optical properties of Cu nanowires will be one of the most important issues when considering the types of materials used in current applications and development of new applications.

Effect of Template Materials on the Top Morphologies of Cu Nanowires

2004 ◽  
Vol 818 ◽  
Author(s):  
Ran-Jin Lin ◽  
Luh-Huei Wu ◽  
Ching-Hsiang Tsai ◽  
Chien-Min Sung
Keyword(s):  
Interface Energy ◽  
Aluminum Film ◽  
Copper Nanowires ◽  
Alumina Film ◽  
Alumina Template ◽  
Polycarbonate Membrane ◽  
Cu Nanowires ◽  
The Difference ◽  
Nano Wires ◽  
Dc Current

AbstractAn array of copper nanowires (50-110 nm in diameters) was deposited by the electrolysis of CuSO4-H2SO4 solution at room temperature using DC current. The array was created by forcing deposited copper to follow a pattern of nano tunnels. These nano tunnels were formed with two different methods: anodizing an aluminum film that coated on a silicon wafer to form nano holes within oxidized alumina, and etching the ion-tracked polycarbonate membrane.The difference in top morphologies of the Cu nanowires in these templates is very marked. The copper nano wires deposited in anodized alumina template form the separate spherical balls with diameter of about 10 νμ on the surface of the alumina film, in spite of the template thickness of only 0.5 νm. In contrast, no such Cu agglomeration was formed with copper nano wires deposited in holes of polycarbonate. This variance in copper morphologies is likely due to the difference of the interface energy between Cu and anodic alumina and that of Cu and polycarbonate.

Fabrication of Highly Flexible Copper Nanowires in Dual Surfactant Hydrothermal Process

2019 ◽  
Vol 19 (11) ◽  
pp. 7156-7162 ◽  
Author(s):  
Mary Donnabelle L. Balela ◽  
Salvacion B. Orgen ◽  
Michael R. Tan
Keyword(s):  
Phase Composition ◽  
Reaction Time ◽  
Intermediate Phase ◽  
Hydrothermal Process ◽  
Optical Transmittance ◽  
The Other ◽  
Copper Nanowires ◽  
Cu Nanowires ◽  
Mean Diameter ◽  
Ag Nanowires

Highly flexible Cu nanowires were successfully synthesized by a dual-surfactant hydrothermal process using oleylamine and oleic acid. The ultra-long Cu nanowires have a mean diameter as low as 82.3 nm and lengths greater than 300 μm. It was found that reaction time and oleylamine concentration significantly influenced the morphology and phase composition of the Cu products. At a shorter reaction time (about 4 hours), pentagonal bipyramidal CU2O particles were precipitated together with the Cu nanowires. A longer reaction time of 12 hours resulted in smooth and purely metallic Cu nanowires. It is possible that CU2O served as an intermediate phase to control the activity of free CU2+ ions in the solution. On the other hand, a higher oleylamine concentration generally produced longer Cu nanowires. Cu nanowires conducting electrode with a sheet resistance of about 157.0 Ω/□ were fabricated. However, the optical transmittance of the electrode at 550 nm was very low (<20%) because of the agglomeration of the Cu nanowires. The addition of a small quantity of Ag nanowires in the Cu nanowire ink markedly improved the appearance and electrical properties of the resulting electrode.

Atomistic Study for the Vibrational Properties on Σ5 Symmetric Tilt Bicrystal Copper Nanowires

2016 ◽  
Vol 846 ◽  
pp. 193-198 ◽  
Author(s):  
Bo Bin Xing ◽  
Shao Hua Yan ◽  
Wu Gui Jiang ◽  
Qing Hua Qin
Keyword(s):  
Kinetic Energy ◽  
Grain Boundary ◽  
Elevated Temperatures ◽  
Boundary Energy ◽  
Copper Nanowires ◽  
Quality Factors ◽  
Cu Nanowires ◽  
Symmetric Tilt ◽  
Flexural Oscillation ◽  
Atomistic Study

In this study, an atomistic simulation was performed to investigate intrinsic resonance propensity of clamped-clamped copper nanowires with Σ5 (310)/[001] symmetric tilt grain boundary. Grain boundary energy γGB for bicrystal structure was calculated based on an iterative approach. The stable atomic configuration was then doubly clamped and excited via flexural oscillation under varied temperatures. From the result, the appearance of grain boundary significantly alters the resonance properties of Cu nanowires. Greater attenuation in kinetic energy can be observed with increased temperature. Quality factors attains Q ~ 1/T0.7144 and 1/T0.7249 with temperatures from kinetic energy and centroid root mean square spectrum, respectively, where the former seems more reliable to employ at elevated temperatures.

Synthesis of Cu Nanowires by the Self-Assembly Growth Process

2014 ◽  
Vol 1035 ◽  
pp. 330-333
Author(s):  
Bo Li ◽  
Min Li ◽  
Mao Xiang Jing ◽  
Zhou Wang ◽  
Xiang Qian Shen
Keyword(s):  
Aqueous Solution ◽  
Self Assembly ◽  
Growth Process ◽  
Copper Ions ◽  
The Self ◽  
Crystal Plane ◽  
Copper Nanowires ◽  
Cu Nanowires ◽  
Sem And Tem

The ultralong copper nanowires (Cu NWs) with diameter of 90±10 nm and length over 20 μm were synthesized by the self-assembly growth process, in which the copper ions were reduced with hydrazine in an aqueous solution containing NaOH and ethylenediamine (EDA). The prepared Cu NWs were characterized by XRD, SEM and TEM. The results indicate that the ultralong Cu NWs product almost containing no particles can be obtained at 80 °C for 1 h with a proper concentration of EDA. During the growth of Cu NWs, as the EDA moleculars are possibly preferentially absorbed onto the crystal plane of (110), the gowth of Cu NW will be oriented along the crystal plane of (111).

Cost-effective aqueous-phase synthesis of long copper nanowires

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 83880-83884 ◽  
Author(s):  
Zengmin Tang ◽  
Aasim Shahzad ◽  
Woo-Sik Kim ◽  
Taekyung Yu
Keyword(s):  
Aqueous Phase ◽  
Cost Effective ◽  
Chloride Ions ◽  
Copper Nanowires ◽  
Phase Synthesis ◽  
Cu Nanowires ◽  
Term Stability ◽  
Long Term Stability

This work describes a simple and cost-effective aqueous-phase synthesis of Cu nanowires with long-term stability. Chloride ions and branched polyethyleneimine (BPEI) were found to be of great importance to the formation and stabilization of Cu nanowires.

One-Pot Synthesis of High Aspect Ratio Copper Nanowires in Aqueous Solution

2015 ◽  
Vol 1119 ◽  
pp. 34-37 ◽  
Author(s):  
Michael Tan ◽  
Mary Donnabelle Balela
Keyword(s):  
Aqueous Solution ◽  
Low Temperature ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Synthesis Temperature ◽  
Copper Nanowires ◽  
One Pot ◽  
Cu Nanowires ◽  
Nanoparticle Growth ◽  
Low Temperature Process

We report a one-pot, low temperature process for the synthesis of high-aspect ratio copper nanowires in aqueous solution for 1 hr. Ethylene diamine (EDA) was utilized to promote anisotropic reduction of Cu (II) by hydrazine. Cu nanowires with mean diameters around 90 nm and lengths exceeding 50 μm were synthesized using 180 mM EDA at 60°C, giving an effective aspect ratio of about 450. Without EDA, nanoparticle growth is observed. The synthesis temperature was also significant in limiting nanoparticle formation. Decreasing the temperature resulted to 1D growth and fewer nanoparticles.

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