Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of black titanium dioxide visible light catalytic coating

A technology of black titanium dioxide and catalytic coating, which is applied in the field of photocatalytic materials, can solve the problems of high experimental precision requirements, large safety hazards, complex processes, etc., and achieve the effect of stable process, high safety and simple process

Active Publication Date: 2021-06-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention discloses a method for preparing a black titanium dioxide visible light catalytic coating through a plasma spraying process. The operation process is flexible, safe and controllable, and overcomes the complex process, high cost, high experimental precision requirements and potential safety hazards in the preparation process of traditional black titanium dioxide materials. At the same time, it can ensure that the phase transition of nano titanium dioxide from anatase phase to rutile phase is reduced during the spraying process, ensuring its good catalytic performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of black titanium dioxide visible light catalytic coating
  • A kind of preparation method of black titanium dioxide visible light catalytic coating
  • A kind of preparation method of black titanium dioxide visible light catalytic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, the base material is selected as a stainless steel sheet with a thickness of about 2mm. The thickness of the black titanium dioxide visible photocatalytic coating on the base is about 20 μm, and the fluffy and porous titanium dioxide coating is black when viewed with the naked eye. Up to more than eighty percent. The preparation process of the black titanium dioxide visible light catalytic coating is as follows: figure 1 As shown, the specific preparation method is as follows:

[0049] 1. First take a 1L clean beaker, add 300mL deionized water and 300mL absolute ethanol into it, and mix evenly in an ultrasonic cleaner. Weigh 3g of polyethylene glycol (molecular weight: 2000, national medicine CAS: 25322-68-3) and 12g of polyvinylpyrrolidone (Hangzhou Lvke Technology Development Co., Ltd., PVP K30) into the mixed solution of absolute ethanol and deionized water , stirred and ultrasonically dispersed to dissolve it. After complete dissolution, slowl...

Embodiment 2

[0080] In this embodiment, the base material is a stainless steel sheet with a thickness of about 2 mm. The thickness of the black titanium dioxide visible photocatalytic coating on the base is about 30 μm, and the fluffy and porous titanium dioxide coating is black by naked eyes. The specific preparation method is as follows:

[0081] 1. First take a 1L clean beaker, add 300mL deionized water and 300mL absolute ethanol into it, and mix evenly in an ultrasonic cleaner. Weigh 3g of coconut acid diethanolamide and 10g of polyacrylamide into the mixed solution of absolute ethanol and deionized water, stir and ultrasonically disperse to dissolve. After complete dissolution, slowly add 35g of P25 powder to the mixed solution, continue mechanical stirring and ultrasonically disperse for 60min to obtain a uniform and stable precursor suspension.

[0082] 2. Wash the substrate several times with deionized water, acetone, and alcohol to remove oil stains, dry at 80°C, and then use 150...

Embodiment 3

[0088] In this embodiment, the base material is a ceramic sheet with a thickness of about 3 mm, and the thickness of the black titanium dioxide visible photocatalytic coating on the base is about 20 μm. In this coating, the fluffy and porous titanium dioxide coating appears black to the naked eye. The specific preparation method is as follows:

[0089] 1. First take a 1L clean beaker, add 150mL deionized water and 450mL absolute ethanol into it, and mix evenly in an ultrasonic cleaner. Weigh 0.8g of polyethylene glycol and 3.2g of polyvinylpyrrolidone into the mixed solution of absolute ethanol and deionized water, stir and ultrasonically disperse to dissolve. After complete dissolution, slowly add 32g of P25 powder into the mixed solution, continue mechanical stirring and ultrasonically disperse for 60min to obtain a uniform and stable precursor suspension.

[0090] 2. Wash the substrate several times with deionized water, acetone, and alcohol to remove oil stains, dry at 80...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a black titanium dioxide visible light catalytic coating. Organic matter, a surfactant, titanium dioxide nanoparticles and a solvent are mixed to prepare a spraying raw material suspension; a plasma spraying process is adopted to spray and deposit the spraying raw material suspension on the surface of a substrate to obtain the black titanium dioxide visible light catalytic coating; the organic matter is selected from polyvinylpyrrolidone and / or polyacrylamide; the mass ratio of the organic matter to titanium dioxide nanoparticles is 1:1-10. In the present invention, the black titanium dioxide coating is firstly obtained through thermal spraying process by adding organic matter to the spraying raw material, mass ratio of organic matter to titanium dioxide nanoparticles, and spraying process parameters, and the preparation process is simple, controllable and less dangerous. And the cost is low.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a method for preparing a black titanium dioxide visible light catalytic coating. Background technique [0002] With several environmental crises since the development of industry, environmental pollution has become one of the major problems to be solved urgently because it threatens the entire ecological environment and people's life safety. People have also tried many ways to deal with industrial waste and solve environmental pollution problems, such as incineration, landfill, physical adsorption and so on. However, none of these methods can fundamentally solve the environmental problems caused by industrial pollution and even cause secondary pollution. In this case, the concept of clean energy is proposed. In a broad sense, clean energy refers to energy that has zero or very low pollution to the environment during development and utilization. The vigorous de...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B05D1/00B01J21/06B01J37/02
CPCB01J21/063B01J37/0215B05D1/62B05D2203/30B05D2202/15B01J35/39
Inventor 翟梦娇黄晶刘奕龚永锋谌宽所新坤李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI