A method for growing high-entropy alloy nanoparticles on flexible substrates

Abstract

The invention provides a method for growing high-entropy alloy nanoparticles on a flexible substrate, comprising: obtaining a flexible substrate; growing a three-dimensional graphene film with a preset shape on the flexible substrate by using a laser direct writing technology; A precursor solution of entropy alloy nanoparticles; dropping the precursor solution on the three-dimensional graphene film to form a pretreated sample; using laser direct writing technology to irradiate the three-dimensional graphene film on the pretreated sample Heat treatment to obtain the high-entropy alloy nanoparticles. Based on the above technical solution, the uniformity of the size of the high-entropy alloy nanoparticles and the total loading of the alloy can be effectively improved; and the high-temperature thermal damage to the flexible substrate can be effectively avoided; at the same time, the pulsed laser pyrolysis growth mechanism is also conducive to obtaining a single Phases of high-entropy alloy nanoparticles.

Description

technical field [0001] The invention relates to the technical field of nano-synthesis, in particular to a method for growing high-entropy alloy nanoparticles on a flexible substrate. Background technique [0002] Flexible electronics is an emerging electronic technology that fabricates organic / inorganic functional materials, electronic devices or systems on flexible substrates. It has a wide range of application prospects in the fields of information, energy, medical care, and national defense. High-entropy alloy nanoparticles are a new type of nanomaterials composed of five or more metal elements and have a single phase. In recent years, they have attracted extensive attention in the fields of catalysis, energy, and sensing. [0003] Although traditional wet chemical methods are often used to synthesize alloy nanoparticles with different morphologies, sizes and structures, it is difficult to prepare multi-element alloy nanomaterials with more than three element combination...

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Problems solved by technology

[0003] Although the traditional wet chemical method is often used to synthesize alloy nanoparticles with different shapes, sizes and structures, it is difficult to prepare multi-component alloy nanomaterials with more than three element combinations.

Some schemes in the prior art can synthesize five-element high-entropy alloy nanoparticles by solvothermal method, but this method is not universal, especially not suitable for the synthesis of high-entropy alloy nanoparticles containing immiscible metal elements

There are also some schemes that put the sample into a high-temperature furnace for synthesis, which is difficult to obtain high-entropy alloy nanoparticles with a single phase; therefore, it is difficult to realize high-entropy alloy nanoparticles on flexible substrates in the prior art In situ growth of nanoparticles

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