A method for rapid preparation of copper nanoparticles with controllable particle size and morphology

Abstract

The invention mainly belongs to the field of copper nanoparticle preparation, and in particular relates to a method for rapidly preparing copper nanoparticle with controllable particle size and shape. In the method, ethylene glycol is used as a solvent, ascorbic acid is used as a reducing agent, copper salt is used as a raw material, and an alkali solution is added to realize reduction in the ethylene glycol solution to prepare copper nanoparticles. When the alkali solution is ammonia water or sodium hydroxide solution, the particle size of the copper nanoparticles can be regulated by controlling the amount of the alkali solution or copper salt added. When the alkali solution is ammonia water, the morphology of copper nanoparticles can be regulated by controlling the amount of ammonia water added. The invention has simple operation, can be completed in one step, has short reaction time, does not need high temperature conditions, and is energy-saving and environment-friendly. At the same time, there is no need to add additional particle surfactants and stabilizers, and the prepared copper nanoparticles have a uniform particle size.

Description

technical field [0001] The invention mainly belongs to the field of preparation of copper nanoparticles, and specifically relates to a method for rapidly preparing copper nanoparticles in a solution with adjustable particle size and shape and excellent oxidation resistance, without adding any surfactant and stabilizing agent during the reaction. agent, does not require high temperatures above 100°C. Background technique [0002] Metal nanoparticles have physical and chemical properties different from their bulk metal materials due to their particular size and shape, and have been widely used in the fields of catalytic materials, nanodevices, optoelectronic materials, semiconductor materials, and biomedical materials. However, the current research on the synthesis of metal nanoparticles mainly focuses on gold, silver and other noble metal nanoparticles. Compared with gold and silver nanoparticles, copper nanoparticles are more active and easy to oxidize, so the reaction cond...

AI Technical Summary

Problems solved by technology

Compared with gold and silver nanoparticles, copper nanoparticles are more active and easy to oxidize, so the reaction conditions are relatively harsh, and often need to be carried out at a high temperature above 100°C and under the protection of an inert gas, and various surface active substances need to be added. Agents are used to control the shape and size of nanoparticles, and the synthesis process is cumbersome and time-consuming

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