Method for preparing copper-nickel alloy nanomaterials with chamfered biconical morphology in hydrophobic phase

Abstract

The invention belongs to the technical field of alloy nanomaterials, and specifically relates to a method for preparing copper-nickel alloy nanomaterials with chamfered biconical morphology characteristics in a hydrophobic phase. Copper salts, nickel salts, complexing agents, and organic solvents are mixed to obtain The mixed solution, the mixed solution is heated and then kept warm for reaction, after the reaction is cooled to room temperature to obtain a reaction solution, and the reaction solution is washed to obtain a finished product. The present invention realizes for the first time the preparation of single-twin chamfered biconical copper-nickel alloy nanomaterials with special morphology in the hydrophobic phase, which expands the limitation of the material morphology; Organic solvents, copper-nickel precursors and complexing agents are required to be mixed, and the heating reaction is enough, without the need for vibration, ultrasonic and other reaction means. The present invention prepares single-twin crystal chamfered biconical copper-nickel alloy nanomaterials with special morphology, which can be Used as a highly active catalyst for coupling reactions and redox reactions.

Description

technical field [0001] The invention belongs to the technical field of alloy nanomaterials, and in particular relates to a method for preparing copper-nickel alloy nanomaterials with chamfered biconical morphology characteristics in a hydrophobic phase. Background technique [0002] Alloy nanomaterials have been attracting people's attention in various metal nanomaterials. Since two or more metals in a single alloy nanomaterial can play a synergistic effect, it has important applications in catalysis, environmental science, biomedicine, energy, information technology, military equipment, aerospace and other fields. Copper-nickel nano-alloy is one of the important conductive metal materials. It is widely used in many fields such as electricity, magnetism and catalysis, and has good catalytic performance (synthesis of nano-copper-nickel alloy supported by carbon nanotubes, Wang Shumin, Heilongjiang University, master [ D], 2013), the preparation method of copper-nickel nano-a...

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Problems solved by technology

[0003] CN200810209721.8 discloses a method for preparing nano-copper-nickel alloy by a liquid phase method. Using a liquid phase method, propylene glycol is used as a reducing agent to reduce divalent copper and nickel salts in an alkaline environment to synthesize copper-nickel alloy nanocrystal particles. 1,2-propanediol is used as a solvent, and NaOH solution needs to be added dropwise during the reaction to prepare nano-copper-nickel alloy. This reaction needs to be carried out in the hydrophilic phase. When reacting in the hydrophilic phase, the surface group needs to be first The replacement process is relatively complicated, and reunion is prone to occur during the replacement process;

[0004] CN201410153158.2 discloses an ultra-long copper-nickel alloy nanowire and a preparation method thereof, that is, dissolving a cationic surfactant in an organic reducing agent; b) adding a copper salt to the organic reducing agent obtained in step a) as a copper source , and add noble metal nanoparticles as a catalyst, and react at a first specified temperature; c) add a nickel salt to the reducing agent reacted in step b) as a nickel source, react at a second specified temperature, and the resulting product is cleaned and dried , that is, the copper-nickel alloy nanowires are obtained. This method only produces copper-nickel alloys with nanowire morphology. In addition, the preparation technology of copper-nickel alloys also lies in the preparation of spherical structures with multiple twins and single-crystal structures. cubes and octahedrons with large limitations

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