One Dimensional Cu Nanowires Oriented Growth、Control And Study Of Performance

One-dimensional nanomaterials(scales1-100nm) structure correspond to its main phasepresents a number of unique properties, causing widely concern. In recent years,one-dimensional electronic conduction material into research, mechanical properties andspatial dimensions, the ideal relationship between the scale of the system, which has greatsignificance for the preparation of nano-electronic devices, functional components, andoptoelectronic device node and so on.Raman spectroscopy (Raman spectra), is a scattering spectroscopy, was discovered byIndian scientists C.V. Raman in1928. Raman spectroscopy, the frequency of the incident lightcan be different scattering spectra analysis, molecular vibration, rotation of information, andto study the molecular structure is applied. However, Raman signals are generally very weakmaterial, which limits the application of Raman spectroscopy. In order to obtain enhancedsignals, usually of gold, silver nanoparticles as the substrate, the use of gold and silvernanoparticles surface plasmin resonance, and the excitation laser, which is surface-enhancedRaman. As the substrate of the surface-enhanced Raman, gold, silver nanoparticles due to thedifferent stability, particle size, and the orientation of the ligands, resulting in thereproducibility of the test is not satisfactory, in a way which hinders the Raman furtherapplication of technology.Copper nanowires are one of the international frontiers of research in recent years, due tothe well-known low prices (relative gold, silver nanomaterial terms), promising to replaceprecious metals in several areas, such as catalysis, a transparent electrode, the electrode sosoft.In this paper, using different methods, we successfully prepared a one-dimensionalcopper nanowires, by observing the response to the phenomenon, combined with a variety oftests to characterize, summed up the law of copper nanowires. By testing its performance wasfound to deposit the copper layer as a substrate, the nanowires to4-ATP as the target analyze,can obtain good reproducibility of Raman spectra, nanowires by depositing copper on thepaper electrodes for methanol and an alkaline environment with good catalytic oxidation.Specific results are as follows: 1. Using induced growth of one-dimensional copper nanowires. Induced growth ofone-dimensional copper nanowires. Mild water bath heating source, using ethylene diamanteas a ligand and adjusting the pH value of the solution, hydrazine hydrate reduction of copperions, copper nanowires prepared. PVP surfactant is introduced into the polyvinylpyrrolidone,although greatly improved the production of copper nanowires, but a large number ofimpurities in the copper wire.2. Glucose reduction was prepared copper nanowires. Use glucose as a reducing agent,hexadecylamine(HDA) as a ligand, preparation of high quality copper nanowires. Theprepared copper nanowires large aspect ratio, thickness uniformity, soft, no significantimpurities in diameter70nm, and the length can reach several tens of microns.3. The use of copper nanowires deposited layer as a substrate,4-ATP as the targetobject to be detected, conducted Raman characterization tests. The results show that thecopper nanowires4. The copper nanowires deposited on paper, soft paper prepared electrodes forpotassium hydroxide system in the catalytic oxidation of methanol has a good performance.