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A kind of loading preparation method of nanometer metal oxide based on anodic oxidation method

An anodic oxidation method and nano-metal technology, applied in the field of nano-materials, can solve the problems of poor loading effect, cracking and uneven heat shrinkage of powder sintering method and liquid phase deposition method

Active Publication Date: 2021-04-20
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the gel aging process, a large amount of water and organic solvents will volatilize, which will not only cause environmental pollution, but also easily crack the titanium dioxide film
[0009] In summary, the loading effect of powder sintering method and liquid phase deposition method is poor, the preparation conditions of chemical vapor deposition method and sputtering method are harsh and costly, and the sol-gel method is easy to cause environmental pollution and is easy to cause environmental pollution due to the gel process. Cracks due to uneven heat shrinkage

Method used

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  • A kind of loading preparation method of nanometer metal oxide based on anodic oxidation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The carrier uses a stainless steel sheet (3mm×2.5mm×0.3mm), and the anode material is a titanium sheet (3mm×2.5mm×0.3mm), including the following steps:

[0045] The reaction device is built with titanium sheet as the anode material and stainless steel sheet as the cathode material. Take 198 grams (NH 4 ) 2 SO 4 and 7.5 g NH 4 F, add 1.5 liters of distilled water to fully dissolve, and configure the electrolyte. The parameters of the magnetic stirrer are set to 500 rpm, and the magnetic stirrer is turned on to make the rotor stir the electrolyte at a constant speed. Connect the power supply, output constant voltage, set the voltage at 20v, turn on the power supply, and the response time lasts for 1.5 hours. Turn off the power supply and the magnetic stirrer, remove the cathode stainless steel sheet, clean it with deionized water, and obtain the titanium dioxide nanomaterial with the stainless steel sheet as the carrier, and the thickness of the nano film is 120nm. ...

Embodiment 2

[0048] A stainless steel sheet (3mm×2.5mm×0.3mm) is used as the carrier, and a porous titanium plate (3mm×2.5mm×1.5mm, with a pore size of 70 μm) is used as the anode material, including the following steps:

[0049] A reaction device is built with a porous titanium plate as the anode material and a stainless steel sheet as the cathode material. Take 198 grams (NH 4 ) 2 SO 4 and 7.5 g NH 4 F, add 1.5 liters of distilled water to fully dissolve, and configure the electrolyte. The parameters of the magnetic stirrer are set to 750 rpm, and the magnetic stirrer is turned on to make the rotor stir the electrolyte at a constant speed. Connect the power supply, output constant voltage, set the voltage at 20v, turn on the power supply, and the response time lasts for 1 hour. Turn off the power supply and the magnetic stirrer, remove the cathode stainless steel sheet, clean it with deionized water, and obtain the titanium dioxide nanomaterial with the stainless steel sheet as the ...

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Abstract

The invention discloses a nano-metal oxide loading preparation method based on an anodic oxidation method, comprising: step 1, relatively fixing the cathode and the anode, immersing in the electrolyte, the anode adopts a metal element material of nano-metal oxide, and the cathode adopts Carrier metal material; step 2, stir the electrolyte at a constant speed, and the rotation speed is not lower than 500rpm; step 3, connect the power supply, and the output voltage is between 10-50v; anodic oxidation reaction occurs on the metal elemental material, and metal oxide nanotubes / nanotubes are formed on the surface Particles, under the action of stirring, the metal oxide nanotubes / nanoparticles on the surface of the anode gradually dissolve and fall off, and enter the electrolyte; under the action of the electric field force, the dissolved and fallen nano-fragments move to the cathode and attach to the surface of the cathode material, forming Metal oxide nanofilms. The preparation method of the thin film provided by the invention has mild conditions, simple equipment, convenient operation and low cost, the prepared thin film has good loading effect, and the metal oxide is not easy to fall off.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a preparation method for loading nanometer metal oxides based on an anodic oxidation method. Background technique [0002] Nano-titanium dioxide can convert light energy into chemical energy and effectively degrade organic pollutants. At the same time, it is considered to have great development prospects and application potential due to its high catalytic activity, good stability, low price, and harmless to the human body. Environmentally friendly photocatalytic materials. [0003] Nano-titanium dioxide particles are widely used in practical applications, but they are very easy to agglomerate during preparation and use, so that they cannot effectively exert their catalytic performance. At the same time, after the degradation treatment, the nanoparticles are dispersed in the solution, and it is difficult to settle freely and separate from the solution. This makes th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J21/06B01J37/34C02F1/30C02F101/30
CPCB01J23/745B01J21/063B01J37/348C02F1/30C02F2101/308C02F2305/10B01J35/23B01J35/39C02F2305/08C02F1/32C02F1/725B01J35/393B01J37/04
Inventor 钱群冯道伦林越
Owner SHANGHAI MARITIME UNIVERSITY
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