Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of nanocrystalline porous titanium dioxide film on flexible substrate

A technology of porous titanium dioxide and flexible substrates, applied in the direction of coating, etc., can solve the problems of incomplete crystal transformation of titanium dioxide, low photoelectric activity, etc., and achieve the effect of simple operation, low price and mild reaction conditions

Inactive Publication Date: 2019-12-27
SHANGHAI NAT ENG RES CENT FORNANOTECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the current flexible dye-sensitized solar cells are all prepared on PEN / FTO or PET / FTO substrates, titanium dioxide nanoparticle films are calcined at 450°C for 30 min to transform the crystal form into anatase to improve the activity and adhesion of titanium dioxide films. However, neither PEN nor PET can withstand long-term calcination at this high temperature, so the current preparation process generally uses low-temperature calcination, resulting in incomplete crystal transformation of titanium dioxide and low photoelectric activity.

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
  • Preparation method of nanocrystalline porous titanium dioxide film on flexible substrate
  • Preparation method of nanocrystalline porous titanium dioxide film on flexible substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A nanocrystalline porous titanium dioxide film on a flexible substrate is prepared by a hydrothermal / screen printing composite method, and the steps are as follows:

[0015] (1) Preparation of titanium dioxide colloid: Take 20ml of butyl titanate and glacial acetic acid, mix them evenly in a beaker, and let it stand; add 120ml of distilled water to the beaker, add about 6ml of diethanolamine under vigorous stirring, and continue stirring for 4h , until a milky white translucent hydrothermal precursor solution is obtained; the precursor solution is added to a hydrothermal autoclave, and the hydrothermal reaction is performed at 150 °C for 24 hours to generate nano-TiO 2 Colloidal solution;

[0016] (2) Preparation of colloids for screen printing: Nano-TiO produced by hydrothermal 2 The colloidal solution was taken out, after ultrasonic dispersion, an industrial viscous agent with a mass fraction of 10% was added, heated at a constant temperature of 80°C, stirred to an a...

Embodiment 2

[0018] A nanocrystalline porous titanium dioxide film on a flexible substrate, prepared according to the following steps:

[0019] (1) Preparation of titanium dioxide colloid: Take 20ml of butyl titanate and glacial acetic acid, mix them evenly in a beaker, and let it stand; add 120ml of distilled water to the beaker, add about 6ml of diethanolamine under vigorous stirring, and continue stirring for 4h , until a milky white translucent hydrothermal precursor solution is obtained; the precursor solution is added to a hydrothermal autoclave, and the hydrothermal reaction is performed at 150°C for 24 hours to generate nano-TiO 2 Colloidal solution;

[0020] (2) Preparation of colloids for screen printing: Nano-TiO produced by hydrothermal 2 The colloidal solution was taken out, after ultrasonic dispersion, carboxymethyl cellulose with a mass fraction of 30% was added as an industrial viscous agent, heated at a constant temperature of 80°C, stirred to an appropriate viscosity, an...

Embodiment 3

[0022] A nanocrystalline porous titanium dioxide film on a flexible substrate, prepared according to the following steps:

[0023] (1) Preparation of titanium dioxide colloid: Take 20ml of butyl titanate and glacial acetic acid, mix them evenly in a beaker, and let it stand; add 120ml of distilled water to the beaker, add about 6ml of diethanolamine under vigorous stirring, and continue stirring for 4h , until a milky white translucent hydrothermal precursor solution is obtained; the precursor solution is added to a hydrothermal autoclave, and the hydrothermal reaction is performed at 150°C for 24 hours to generate nano-TiO 2 Colloidal solution;

[0024] (2) Preparation of colloids for screen printing: Nano-TiO produced by hydrothermal 2 The colloidal solution was taken out, and after ultrasonic dispersion, 10% carboxymethyl cellulose and 15% carboxyethyl cellulose were added as industrial viscous agents, heated at a constant temperature of 80°C, and stirred to an appropriate...

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of a nanocrystalline porous titanium dioxide film on a flexible substrate. A hydrothermal / silk-screen printing composite method is adopted for preparation.The preparation method comprises the following steps: (1) preparation of titanium dioxide colloid: carrying out a hydrothermal reaction at 150 DEG C for 24 hours to generate a nano TiO2 colloidal solution; and (2) preparation of silk-screen printing colloid: taking out the nano TiO2 colloidal solution generated by the hydrothermal method, carrying out ultrasonic dispersion, adding an industrial thickener with the mass fraction of 10-30%, heating at a constant temperature of 80 DEG C, stirring the mixture to a proper viscosity, and sputtering the flexible substrate with the mixture by adoptinga silk-screen printing method to directly obtain the titanium dioxide nanocrystalline porous film. The preparation method disclosed by the invention is an emerging micro-nano structure preparation technology, and the product is stable in property, uniform in film formation and controllable in film thickness; and the preparation method has the advantages of low cost, capability of large-area preparation, capability of being used for the flexible substrate and the like, and is particularly suitable for industrial production.

Description

technical field [0001] The invention relates to the preparation of a nanocrystalline porous titanium dioxide layer, in particular to a preparation method of a nanocrystalline porous titanium dioxide film on a flexible substrate. Background technique [0002] Due to their unique properties such as small size effect, surface effect, quantum size effect, macroscopic quantum tunneling effect, and dielectric confinement effect, nanomaterials exhibit various superior properties that conventional materials do not possess. In the field of nanomaterials research, nano-titanium dioxide, as a functional semiconductor material, has a very wide range of uses in the fields of environmental protection, photoelectric conversion, coating industry and industrial catalysis. Nano-titanium dioxide material has the advantages of low price, non-toxicity, small particle size, less particle agglomeration, uniform and stable shape, and can be recycled, so it is favored in sewage treatment and air pur...

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 Applications(China)
IPC IPC(8): C08J7/06C08L67/02C09D1/00
CPCC08J7/06C08J2367/02C09D1/00
Inventor 林琳吴晓燕王敬锋徐少洪陈超
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com