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Preparation method, device and application of aluminum-based Fe3O4-TiO2 composite photocatalytic plate

A fe3o4-tio2, catalytic plate technology, used in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Surface photocatalytic performance, insufficient coating adhesion and other problems, to achieve the effect of increasing the proportion of anatase, improving the photocatalytic activity, and improving the separation efficiency

Pending Publication Date: 2021-11-05
MAANSHAN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase TiO 2 The specific surface area of ​​the substrate is generally set to a porous structure. However, the porous structure makes the coating of the coating more difficult. It is difficult for the traditional spraying method to evenly coat the coating on the inner wall of the hole; when using dipping coating, And due to the existing TiO 2 The viscosity of the coating is high, and it is impossible to form a film with a controllable thickness on the surface of the substrate, resulting in low porosity of the coating, affecting the photocatalytic performance of the surface, and causing a lot of waste of raw materials; and simply diluting the coating will lead to poor adhesion of the coating. Insufficient, the above problems need to be solved urgently

Method used

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  • Preparation method, device and application of aluminum-based Fe3O4-TiO2 composite photocatalytic plate
  • Preparation method, device and application of aluminum-based Fe3O4-TiO2 composite photocatalytic plate
  • Preparation method, device and application of aluminum-based Fe3O4-TiO2 composite photocatalytic plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] An Al-based Fe 3 o 4 -TiO 2 Composite photocatalytic plates, such as figure 1 As shown, it is prepared by the following method:

[0056] Step 1: pickling the honeycomb aluminum plate to remove the surface oxide layer, rinse with water after pickling, dry it, and set aside;

[0057] Step 2: Prepare Fe-containing 3 o 4 the paint a;

[0058] Step 3: Dip the honeycomb aluminum plate in the paint a, remove it, drain off the excess paint on the surface, and dry it in a nitrogen environment to obtain a prefabricated honeycomb aluminum plate;

[0059] Step 4: Place the prefabricated honeycomb aluminum panel in a strong magnetic field environment to magnetize the surface coating a to obtain a magnetized prefabricated honeycomb aluminum panel;

[0060] Step 5: Prepare Fe-containing 3 o 4 and TiO 2 the coating b;

[0061] Step 6: Dip the magnetized prefabricated honeycomb aluminum plate in the paint b, remove it, drain off the excess paint on the surface, and dry it wit...

Embodiment 2

[0075] An Al-based Fe 3 o 4 -TiO 2 The composite photocatalytic plate is prepared by the following method:

[0076] Step 1: pickling the honeycomb aluminum plate to remove the surface oxide layer, rinse with water after pickling, dry it, and set aside;

[0077] Step 2: Prepare Fe-containing 3 o 4 the paint a;

[0078] Step 3: Dip the honeycomb aluminum plate in the paint a, remove it, drain off the excess paint on the surface, and dry it in a nitrogen environment to obtain a prefabricated honeycomb aluminum plate;

[0079] Step 4: Place the prefabricated honeycomb aluminum panel in a strong magnetic field environment to magnetize the surface coating a to obtain a magnetized prefabricated honeycomb aluminum panel;

[0080] Step 5: Prepare Fe-containing 3 o 4 and TiO 2 the coating b;

[0081] Step 6: Dip the magnetized prefabricated honeycomb aluminum plate in the paint b, remove it, drain off the excess paint on the surface, and dry it with hot air at 60°C to obtain a p...

Embodiment 3

[0095] An Al-based Fe 3 o 4 -TiO 2 The composite photocatalytic plate is prepared by the following method:

[0096] Including the following steps:

[0097] Step 1: pickling the honeycomb aluminum plate to remove the surface oxide layer, rinse with water after pickling, dry it, and set aside;

[0098] Step 2: Prepare Fe-containing 3 o 4 the paint a;

[0099] Step 3: Dip the honeycomb aluminum plate in the paint a, remove it, drain off the excess paint on the surface, and dry it in a nitrogen environment to obtain a prefabricated honeycomb aluminum plate;

[0100] Step 4: Place the prefabricated honeycomb aluminum panel in a strong magnetic field environment to magnetize the surface coating a to obtain a magnetized prefabricated honeycomb aluminum panel;

[0101] Step 5: Prepare Fe-containing 3 o 4 and TiO 2 the coating b;

[0102] Step 6: Dip the magnetized prefabricated honeycomb aluminum plate in the paint b, remove it, drain off the excess paint on the surface, an...

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Abstract

The invention belongs to the technical field of photocatalytic coatings, and particularly relates to a preparation method of an aluminum-based Fe3O4-TiO2 composite photocatalytic plate, which comprises the following steps: pickling a honeycomb aluminum plate to remove a surface oxide layer; preparing a coating a containing Fe3O4; soaking the honeycomb aluminum plate in the coating a, fishing the honeycomb aluminum plate out and drying; placing the prefabricated aluminum honeycomb plate in a high-intensity magnetic field environment; preparing a coating b containing Fe3O4 and TiO2; soaking the magnetized prefabricated aluminum honeycomb plate in the coating b, fishing the magnetized prefabricated aluminum honeycomb plate out and drying with hot air; and carrying out heat treatment on the prefabricated photocatalytic plate, and cooling to room temperature after the heat treatment is completed, so as to obtain the aluminum-based Fe3O4-TiO2 composite photocatalytic plate. According to the invention, Fe3O4 is adopted as an adsorption coating, so that the adhesion density of a Fe3O4-TiO2 compound can be effectively improved, and the photocatalytic activity of the coating is improved. Besides, by adopting the flowing type infiltration coating, the coating can be in full contact with a machine body, the adsorption probability of the Fe3O4-TiO2 compound is improved, and the photocatalytic efficiency of the TiO2 coating is further improved.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic coating, in particular to an aluminum-based Fe 3 o 4 -TiO 2 Preparation method, device and application of composite photocatalytic plate. Background technique [0002] Al-based TiO 2 The photocatalytic plate is coated with TiO on the aluminum substrate 2 coating, using TiO 2 The strong oxidizing property produced under light irradiation decomposes the toxic and harmful substances in the air or sewage, thus effectively purifying the air or water. In order to increase TiO 2 The specific surface area of ​​the substrate is generally set in a porous structure. However, the porous structure makes the coating of the coating more difficult. It is difficult for the traditional spraying method to evenly coat the coating on the inner wall of the hole; when dipping coating is used, And due to the existing TiO 2 The viscosity of the paint is high, and it is impossible to form a film with a contr...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J37/02B01J37/34B01D53/86B01D53/72B65G17/40
CPCB01J23/745B01J23/002B01J37/0217B01J37/342B01J37/0242B01D53/007B01D53/8668B65G17/40B01D2255/802B01D2257/708B01J35/23B01J35/39Y02W10/37
Inventor 吴永军谢妮娜王海云窦桂林杜俊成
Owner MAANSHAN TEACHERS COLLEGE