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A kind of porous nano cofe 2 o 4 Preparation method of nanoparticles

A nanoparticle, cofe2o4 technology, applied in the field of photocatalytic materials, can solve the problems of difficult to remove templates, reduce photocatalytic efficiency, channel collapse, etc., achieve high separation efficiency and improve separation efficiency

Active Publication Date: 2021-06-29
欧阳晨曦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of porous nano-CoFe using the above-mentioned traditional templates 2 o 4 When using calcination or extraction to remove the template, there are serious defects
When the template is removed by calcination, due to the high temperature to remove the template, the pores will collapse, making the porous nano-CoFe 2 o 4 There are too many defects on the surface of semiconductor photocatalysts, which become electron-hole recombination centers and reduce photocatalytic efficiency
The extraction method is difficult to completely remove the template, making porous nano-CoFe 2 o 4 Reduced purity of semiconductor photocatalysts leads to reduced photocatalytic performance

Method used

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  • A kind of porous nano cofe <sub>2</sub> o <sub>4</sub> Preparation method of nanoparticles
  • A kind of porous nano cofe <sub>2</sub> o <sub>4</sub> Preparation method of nanoparticles
  • A kind of porous nano cofe <sub>2</sub> o <sub>4</sub> Preparation method of nanoparticles

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preparation example Construction

[0031] Such as Figure 1 to Figure 4 Shown, a kind of porous nanometer CoFe of the present invention O The preparation method of nanoparticle, this method comprises the following steps:

[0032] S1: Prepare 3-6 parts of iron bromide, 4-6 parts of aluminum powder, 4-7 parts of cobalt sulfate, 2-3 parts of sublimable compound template, 3-6 parts of organic solvent, 1-2 parts of potassium hydroxide and 2-3 parts of deionized water;

[0033] S2: Ferric bromide and cobalt sulfate are fully mixed, then add half of deionized water to make a mixed solution, potassium hydroxide is mixed with the other half of deionized water to form an alkaline solution; slowly add the mixed solution of ferric bromide and cobalt sulfate to the alkaline solution , stir and mix for 2-3h;

[0034] S3: Centrifuge the product of S2 to obtain CoFe 2 o 4 Sol;

[0035] S4: In CoFe 2 o 4 Organic solvent, compound template and aluminum powder are sequentially added into the sol, and the compound templates...

Embodiment approach

[0041] As an embodiment of the present invention, the upper end of the second connecting rod 9 is fixedly connected to a sliding column 21, and the outer ring of the sliding column 21 is covered with a supporting spring 8, which is made of rubber. The first connecting rod The lower end of 7 is fixedly connected with two elastic baffles 22, and the two elastic baffles 22 clamp the support spring 8, and a group of grooves for clamping the support spring 8 are uniformly arranged on the inner side of the elastic baffle 22. When the support plate 3 is swinging, when the support plate 3 shakes to one side, the first connecting rod 7 stretches the supporting spring 8 on the second connecting rod 9, and the supporting spring 8 originally stuck in the groove of the elastic baffle 22 When the support spring 8 slides from one groove to the other, the first connecting rod 7 vibrates and feeds back to the support plate 3, thereby causing the graphite crucible 4 to vibrate, fully separating ...

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Abstract

The invention belongs to the technical field of photocatalytic materials, specifically a porous nano-CoFe 2 o 4 A method for preparing nanoparticles, the method uses a vacuum treatment tank, the inner wall of the middle part of the vacuum treatment tank is provided with an induction coil; the induction coil is arranged around a support plate, and the graphite crucible is installed on the support plate; the center of the bottom of the support plate is hinged on the motor output The end of the shaft; one side of the support plate is rotatably connected to a liquid storage tank, the other side of the support plate is hinged to the upper end of the first connecting rod, the lower end of the first connecting rod is connected to the upper end of the second connecting rod through a supporting spring, and the lower end of the second connecting rod is hinged on The middle of the motor output shaft. The present invention passes to the prepared CoFe 2 o 4 Aluminum powder is mixed into the sol, and the aluminum powder is melted by high-frequency heating, and the melted aluminum powder heats the organic solvent and the compound template to make it volatilize, which overcomes the problem of the pores caused by the high temperature when the roasting method is used to remove the compound template. collapse problem, and high separation efficiency improves the porous nano-CoFe 2 o 4 production efficiency.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, in particular to a porous nano-CoFe 2 o 4 Methods for the preparation of nanoparticles. Background technique [0002] With the acceleration of the industrialization process, the energy crisis and environmental crisis are becoming more and more serious, and the development of renewable new energy has attracted much attention. As a clean energy, solar energy is an inexhaustible, inexhaustible, pollution-free, cheap energy that can be used freely and peacefully by all countries in the world. It is also a variety of renewable energy such as biomass energy, wind energy, ocean energy, water Can wait for other sources of energy. Governments of all countries attach great importance to the development of renewable energy, and renewable energy is a hot research field that countries invest heavily in. [0003] Photocatalyst is a kind of semiconductor material necessary for the developme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/00
CPCC01G51/00
Inventor 孙亚娟高娟都一鸣刘世球
Owner 欧阳晨曦
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