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a tio 2 Magnetic porous composite material and preparation method thereof

A porous composite material and composite material technology, applied in the field of TiO2-based magnetic porous composite materials and its preparation, can solve the problems of difficult control of the shape and size of hollow catalytic materials, high recombination efficiency of electrons and holes, and loss of active components.

Active Publication Date: 2021-04-23
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the nano-titanium dioxide-based photocatalytic materials adopted, due to the nano-TiO 2 It is easily affected by the loss of active components, and it is difficult to recycle and reuse; secondly, the shape and size of hollow catalytic materials are difficult to control, the operation procedures are complicated, and the photocatalytic activity is low; The electron and hole recombination efficiency of the catalytic material itself is high

Method used

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  • a tio <sub>2</sub> Magnetic porous composite material and preparation method thereof
  • a tio <sub>2</sub> Magnetic porous composite material and preparation method thereof

Examples

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preparation example Construction

[0028] A kind of TiO 2 A method for preparing a magnetic-based porous composite material, comprising:

[0029] Step 1, weighing lignocellulose, dissolving in deionized water, stirring evenly until a uniform suspension is formed;

[0030] Step 2, using an ultrasonic signal generator to disperse lignocellulose; the dispersion time is 180 minutes, the power is 960W, the temperature of the ultrasonic water bath is 30-40°C, and the climate environment affects its temperature setting.

[0031] Step 3, prepare activating solution A liquid, activating solution B liquid, chemical plating solution C liquid, described activating solution A liquid is the mixed solution of concentrated hydrochloric acid and nickel sulfate, and its concentration is 0.7-0.9mL / g; Said activating solution Liquid B is a mixed solution of sodium hydroxide and sodium borohydride, and its mass ratio is 0.7-0.9:0.9-1.1; Liquid C is a mixed plating solution of nickel sulfate, sodium citrate, sodium hypophosphite an...

Embodiment 1

[0042] Example 1: TiO 2 The preparation method of base magnetic porous composite material, see figure 1 ,Specific steps are as follows:

[0043] (1) Weigh 0.6 g of lignocellulose with an electronic balance, measure 300 mL of distilled water with a 500 mL beaker and dissolve the weighed lignocellulose in it, and stir evenly with a glass rod until a uniform suspension is formed in the beaker.

[0044] (2) Using the SM-1200D ultrasonic signal generator to disperse lignocellulose, the adjustment of the horn should pay attention to three points: 1. The horn is placed at half the height of the solution, 2. The horn is located at the center of the solution circle, 3. The horn must not be close to the temperature control sensor; the dispersion time is 180 minutes, the power is 960W, put the beaker with dissolved lignocellulose in the device with ice cubes, and change the ice cubes continuously during the period The frequency is different according to the season. The ice is changed e...

Embodiment 2

[0048] Example 2: TiO 2 The preparation method of base magnetic porous composite material, concrete steps are as follows:

[0049] (1) Weigh 0.6 g of lignocellulose with an electronic balance, measure 300 mL of distilled water with a 500 mL beaker and dissolve the weighed lignocellulose in it, and stir evenly with a glass rod until a uniform suspension is formed in the beaker.

[0050] (2) Using the SM-1200D ultrasonic signal generator to disperse lignocellulose, the adjustment of the horn should pay attention to three points: 1. The horn is placed at half the height of the solution, 2. The horn is located at the center of the solution circle, 3. The horn must not be close to the temperature control sensor; the dispersion time is 180 minutes, the power is 960W, put the beaker with dissolved lignocellulose in the device with ice cubes, and change the ice cubes continuously during the period The frequency is different according to the seasons. The ice is changed every 15 minute...

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Abstract

The invention relates to nanostructures, in particular to a TiO 2 A magnetic-based porous composite material and a preparation method thereof. The composite material uses nano-lignocellulose as a skeleton. First, the lignocellulose cell wall is peeled off, and a large number of pore structures appear on the surface to prepare porous nano-lignocellulose; And 2 times of electroless Ni plating, nano-graphene is added in the 2 times of electroless Ni plating, and a layer of metal layer is coated on the surface of porous nano-lignocellulose to form a magnetic cylindrical structure; using sol-gel method, composite cylindrical structure , TBOT and nano-graphene, during the composite process, they are constantly stirred and evenly compounded, and the composite structure is calcined at high temperature, and the composite coating coated on the surface pore structure will collapse. Finally, the cylindrical structure, nano-TiO 2 Uniform composite with nano-graphene, successfully prepared Ni‑NiO / GO‑TiO 2 Magnetic porous cylindrical structure. The invention can capture the luminous flux and the longest optical path to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a TiO 2 Magnetic porous composite material and its preparation method. Background technique [0002] With the acceleration of the country's industrialization process, toxic and harmful industrial wastewater is constantly produced in the production process of enterprises. General industrial wastewater can adopt conventional industrial sewage treatment process, mainly biochemical treatment, and discharge it into the receiving water body after reaching the standard; it can also be directly discharged into the industrial park sewage treatment plant after simple pretreatment. Some of them have carcinogenic, teratogenic and mutagenic effects, which pose a great threat to human health. It is imminent to seek non-polluting and recyclable photocatalytic materials to improve the increasingly serious environmental pollution. Nano-titanium dioxide-based photocatalytic materials can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J37/34B01J37/08C23C18/36C23C18/30
CPCB01J23/755B01J35/0013B01J35/0033B01J35/004B01J37/0018B01J37/348C23C18/1655C23C18/28C23C18/36
Inventor 潘艳飞黄金田赵胜利王欣
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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