Method for manufacturing large area evenly distributed cuprum octahedron nanometer particle

Abstract

The invention relates to a method for preparing copper nanometer octahedrons which are evenly distributed on large area, the method comprises: adopting an electrodeposition method, wherein an anode is a pure copper strip whose purity is more than or equal to 99.95%, an electrode which is used in a cathode is deposition or gold plating film on the right side of metal or a silicon wafer, electrolyte is copper sulfate solution, and the concentration of copper salt electrolyte is 0.08-0.24mol / L, regulating constant total voltage to be 10-100mV when in electrodeposition, regulating the electrolysis time to be 20-200s, reacting, then, repeatedly washing a cathode of loading copper nanometer with deionized water, and lastly drying in air. The method of the invention adopts a constant pressure mode, an electrolysis bath is a plastic tank, copper nano-crystals which are prepared by the invention are evenly distributed on the surface of a GFE basal body, the monodispersion of the copper nano-crystals is comparatively good, the yield is high, and the size can be controlled. The method of the invention is simple and easy in operation, products are easily separated, the purity is comparatively high, and the method has very good industrial application prospect.

Description

technical field [0001] The invention relates to the preparation of nanometer materials, especially the preparation of copper nanoparticles with specific morphology. Background technique [0002] In recent years, due to the unique properties of metal nanomaterials and their broad application prospects in plasmonics, biosensing, catalysis, surface-enhanced Raman scattering and other fields, people have attracted much attention. These properties of metal nanomaterials strongly depend on its shape and size, so the controllable preparation of shape and size is particularly important for exploring its shape, size-related physical and chemical properties and practical applications. In the past few years, many scholars have explored the shape-controlled synthesis of metal nanoparticles and achieved a series of gratifying results. Many polyhedral metal (especially metallic silver, gold, and platinum) nanoparticles, such as tetrahedron, cube, octahedron, decahedron, dodecahedron, and...

AI Technical Summary

Problems solved by technology

There is currently no dedicated preparation method, especially one-step preparation of large-area supported copper octahedral nanoparticles and effective control of their size and distribution density, without the need for any additives and electrode surface modification.

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