Method for preparing copper-nickel alloy nanometer material with cutting-angle twin-cone morphology features in hydrophobic phase

Abstract

The invention belongs to the technical field of alloy nanometer materials, and particularly relates to a method for preparing a copper-nickel alloy nanometer material with cutting-angle twin-cone morphology features in a hydrophobic phase. The method includes the steps of mixing copper salt, nickel salt, a complexing agent and an organic solvent to form mixed liquid, conducting thermal reaction after heating the mixed liquid, cooling to the room temperature after reaction to obtain reaction liquid, and washing the reaction liquid to obtain the finished product. The single-twin-crystal cutting-angle twin-cone copper-nickel alloy nanometer material with the special morphology features in the hydrophobic phase is prepared for the first time, and the limitation of the material morphology is reduced; the copper-nickel alloy nanometer material is simple in process and can be obtained only by mixing the organic solvent, a copper-nickel precursor and the complexing agent and conducting the heating reaction without oscillation, ultrasonic treatment and other reaction means, and the raw materials are easy to obtain; and the prepared single-twin-crystal cutting-angle twin-cone copper-nickel alloy nanometer material with the special morphology features can be used as a high-activity catalyst in coupling reaction and redox reaction.

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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