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

Titanium dioxide film synthesizing method and the product thereof

a titanium dioxide and film technology, applied in the field of thin film synthesis, can solve the problems of time-consuming titanium dioxide synthesizing method, limited application, and bulk titanium as a substra

Inactive Publication Date: 2005-05-19
LU FU HSING +1
View PDF5 Cites 50 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional electrochemical anodic oxidation for synthesis of titanium dioxides uses bulk titanium as a substrate, which has limited application.
This titanium dioxides synthesizing method is time-consuming because bulk titanium must be immersed in highly alkaline solutions for at least several hours.
However, for application of anatase TiO2 there are technical problems to be settled, more particularly the problem of how to join firmly the titanium dioxides and the substrates.
Conventional obtaining satisfactory adhesion between anatase titanium dioxides and substrates is still not an easy task.
Further, because anatase titanium dioxides are photocatalytic, substrates made of organic materials tend to be decomposed by the titanium dioxides due to photocatalytic reactions.
This is another problem to be conquered.

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
  • Titanium dioxide film synthesizing method and the product thereof
  • Titanium dioxide film synthesizing method and the product thereof
  • Titanium dioxide film synthesizing method and the product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The first embodiment of the present invention is to synthesize titanium dioxide films on a homogenous substrate (titanium) or heterogeneous substrate (silicon or any of a variety of semiconductors, metal, glass, ceramics, or polymers). For illustration only, the first embodiment is described to synthesize titanium dioxide films on a silicon substrate.

[0017] The method of the first embodiment of the present invention includes two stages, namely, the first stage of pre-deposition and the second stage of electrochemical anodic oxidation. The first stage of pre-deposition is to deposit a titanium film on a silicon wafer by sputtering. Titanium film can also be deposited on a bulk titanium or substrate of any of a variety of other materials. The second stage of electrochemical anodic oxidation is to synthesize a nano-network structured titanium dioxide film on the titanium-coated silicon wafer in highly alkaline electrolytes, such as KOH (potassium hydroxide). In other words, the...

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
voltageaaaaaaaaaa
voltageaaaaaaaaaa
timeaaaaaaaaaa
Login to View More

Abstract

A titanium dioxide films synthesizing method includes the step of coating a titanium film on the surface of a homogenous (or heterogeneous) substrate, and the step of using the titanium-coated substrate as anode in an electrolyte to synthesize an nano-structured titanium dioxide film with single anatase phase on the surface of the titanium film by employing electrochemical anodic oxidation at room temperature.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to the synthesis of thin films on substrates and, more particularly, to a titanium dioxide film synthesizing method to synthesize nano-structured anatase titanium dioxide films on homogeneous or heterogeneous substrates. [0003] 2. Description of the Related Art [0004] Nano-structured titanium dioxides have many applications owing to their superior photocatalytic, biocompatible, and many other properties. Conventional electrochemical anodic oxidation for synthesis of titanium dioxides uses bulk titanium as a substrate, which has limited application. There is known another titanium dioxide synthesizing method that directly immersing bulk titanium in highly alkaline solutions (for example, 5M NaOH), forming porous titanium dioxide films. Porous titanium dioxide films made according to this method often exhibit a mixed phase, such as Na2Ti5O11+TiO2 (rutile), or TiO2 (rutile+anatase). Moreov...

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(United States)
IPC IPC(8): C25D9/00C25D11/26
CPCC25D11/26
Inventor LU, FU-HSINGYANG, YU-SHAO
Owner LU FU HSING
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