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Nano-particle shape changing method

A nanoparticle and metal nanoparticle technology, applied in the field of nanomaterials, can solve the problems of inability to process a large amount, complicated processing steps, and various solvent pollution, etc., and achieve the effects of low production cost, convenient operation, and no secondary pollution

Active Publication Date: 2019-12-17
HOHAI UNIV CHANGZHOU
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  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for changing the shape of nanoparticles to solve the problem of high cost of physical methods in the prior art, strict technical requirements, chemical methods will cause various solvent pollution, complex processing steps, low reaction efficiency, and cannot be used in large quantities. Dealing with the problem

Method used

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  • Nano-particle shape changing method

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Experimental program
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Effect test

Embodiment 1

[0018] Use corona discharge to generate low-temperature plasma under atmospheric pressure, take 600 μl of silver nanoparticle solution, and spray the above-mentioned low-temperature plasma into the silver nanoparticle solution to change the shape of silver nanoparticles. The experimental conditions are: voltage: 20kV, Current: 25μA±5μA, the treatment time is 0min, 2min, 6min, 10min, 14min respectively, the silver nanoparticle solutions treated for different times were taken for UV spectrophotometry test, the test results are as follows figure 1 shown.

[0019] figure 1 In order to treat the ultraviolet absorption spectrum of the silver nanoparticle solution for different time, from figure 1 It can be seen from the figure that the absorption peak of silver nanoparticles around 400nm gradually decreases and blue shifts, that is, as the treatment time increases, the concentration of silver nanoparticles decreases and their size also decreases. The test results show that the conc...

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Abstract

The invention discloses a nano-particle shape changing method. The nano-particle shape changing method comprises the steps of spraying plasmas into a nano-particle solution, and controlling the concentration of active ingredients in the plasmas by adjusting discharge parameters to change the shape of nano-particles. According to the nano-particle shape changing method, the nano-particle material is treated through the plasmas, and the purpose of changing the shape of the nano-particle material in an efficient, environment-friendly and uniform manner is achieved; moreover, equipment is simple,low in cost, easy, quick and convenient to operate and capable of remarkably improving the efficiency of changing the shape of the nano-particle material, remarkably increasing the yield of the nano-particle material and changing the shape of the nano-particle material within a very short period of time. Meanwhile, environmental pollution caused by a complex solvent system through general chemicalmethods is avoided.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a method for changing the shape of nanoparticles. Background technique [0002] Nanomaterials have many special properties. People have shown great enthusiasm for the research of nanomaterials. At present, a variety of nanometer and nanocomposite materials with advanced functions and outstanding performance have been synthesized, which are widely used in industry, agriculture, aerospace and other fields. The fine particle size, large specific surface area, insufficient atomic coordination and high surface energy of nanoparticles make the surface atoms highly active, extremely unstable, and easy to agglomerate. The secondary particles obtained after agglomeration are difficult to exert their nano effect, making The material does not achieve the desired properties. Therefore, in order to maximize the performance of nanoparticles, they need to be modified. At present, the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B82Y40/00
CPCB82Y40/00B22F2999/00B22F1/14B22F1/054B22F2202/13
Inventor 阚雪芬钱思越殷澄韩庆邦
Owner HOHAI UNIV CHANGZHOU
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