Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of micro-nano structured photocatalytic coating and preparation method thereof

A technology of micro-nano structure and photocatalysis, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. It can solve the problems of poor photocatalytic performance of coatings, high requirements for raw materials and equipment, and low deposition rate, etc. problem, achieve the effect of reducing TiO2 agglomeration, low cost and good combination

Active Publication Date: 2019-04-16
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, traditional TiO 2 Coating preparation methods mainly include sol-gel method, chemical vapor deposition method, electrochemical method, etc. These traditional preparation methods have low deposition rate, complex technology, high requirements for raw materials and equipment, high cost, or coating gloss The catalytic performance is poor, so in order to achieve TiO 2 The large-scale application of coatings and coatings with excellent photocatalytic self-cleaning properties urgently require the development of a new low-cost, large-area coating preparation technology suitable for industrial production

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 micro-nano structured photocatalytic coating and preparation method thereof
  • A kind of micro-nano structured photocatalytic coating and preparation method thereof
  • A kind of micro-nano structured photocatalytic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In the present embodiment, the selected substrate is a 316L stainless steel sheet with a thickness of about 2mm, and the nanometer HA-TiO 2 The thickness of the photocatalytic composite is about 50 μm, and the mass percentage of nano-HA in the coating is 30wt%. The coating is a porous micro-nano structure, mainly including nano-HA-TiO 2 The particles are piled up, and the nano-HA is spherical, and the TiO in the coating 2 The crystal forms are anatase phase and rutile phase, and the anatase phase has no obvious transformation, and the coating is well combined with the substrate. The concrete preparation method of this coating is as follows:

[0040] (1) The concentration of calcium nitrate solution is configured to be 2.5mol / L, and the concentration of ammonium dihydrogen phosphate solution is 1.5mol / L;

[0041] (2) After curing the hydroxyapatite precursor slurry for 5 hours, add commercially available P25 with an average particle size of 25nm, in which TiO 2 The ma...

Embodiment 2

[0053] In the present embodiment, the selected substrate is a 316L stainless steel sheet with a thickness of about 2mm, and the nanometer HA-TiO 2 The thickness of the photocatalytic composite is about 100μm, and the mass percentage of nano-HA in the coating is 40wt%. The coating is a porous micro-nano structure, mainly including nano-HA-TiO 2 The particles are piled up, and the nano-HA is needle-shaped, and the TiO in the coating 2 The crystal forms are anatase phase and rutile phase, and the anatase phase has no obvious transformation, and the coating is well combined with the substrate. The concrete preparation method of this coating is as follows:

[0054] (1) The concentration of calcium nitrate solution is configured to be 2.5mol / L, and the concentration of ammonium dihydrogen phosphate solution is 1.5mol / L;

[0055] (2) After curing the hydroxyapatite precursor slurry for 1.5 hours, add commercially available P25 with an average particle size of 25nm, in which TiO 2 ...

Embodiment 3

[0067] In this embodiment, the selected substrate is a 304 stainless steel sheet with a thickness of about 2mm, and the nanometer HA-TiO 2 The thickness of the photocatalytic composite is about 80 μm, and the mass percentage of nano-HA in the coating is 35wt%. The coating is a porous micro-nano structure, mainly including nano-HA-TiO 2 The particles are piled up, and the nano-HA is spherical, and the TiO in the coating 2 The crystal forms are anatase phase and rutile phase, and the anatase phase has no obvious transformation, and the coating is well combined with the substrate. The concrete preparation method of this coating is as follows:

[0068] (1) The concentration of calcium nitrate solution is configured to be 2.5mol / L, and the concentration of ammonium dihydrogen phosphate solution is 1.5mol / L;

[0069] (2) After curing the hydroxyapatite precursor slurry for 4 hours, add commercially available P25 with an average particle size of 25nm, in which TiO 2 The mass perce...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a micro-nano structure photocatalytic coating and a preparation method thereof, and belongs to the technical field of catalysts. Nano-titanium dioxide is coated with hydroxyapatite to form a composite material suspension, which is subjected to a thermal spraying process to spray-deposit the composite material suspension onto the surface of the substrate to obtain a nano-titanium dioxide photocatalytic coating coated with nano-hydroxyapatite material. . HA‑TiO produced in this application 2 The nanocomposite photocatalytic coating has the characteristics of porous micro-nano structure, high specific surface area, excellent adsorption performance, and strong photocatalytic performance. The method is simple to operate, low in cost, and suitable for industrial production.

Description

technical field [0001] The invention relates to a micro-nano structure HA-TiO with high specific surface area 2 A (hydroxyapatite / titanium dioxide) photocatalytic coating and a preparation method thereof belong to the technical field of catalysts. Background technique [0002] Environmental issues have become the key factors facing human survival and development. Air pollution, water pollution and other problems are becoming more and more serious, and there is an urgent need to develop advanced environmental governance technologies. At present, for environmental pollution problems, the main materials are physical adsorption method, chemical oxidation method, microbial treatment method and high temperature incineration method. Although these methods have played an important role in environmental protection and governance, they also have some problems to varying degrees. , such as (1) the degradation efficiency of pollutants is low, the degradation is not complete, and secon...

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): B01J27/18B01J37/02
CPCB01J27/1806B01J37/0217B01J37/0225B01J37/0228B01J35/39
Inventor 黄伟东
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com