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

One-step electrochemical method for the synthesis of pure rutile-type titania nanoneedles

A titanium dioxide, rutile type technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, anodization, etc., can solve the problems of troublesome separation of nanocrystals, less shape, uncontrolled and so on

Inactive Publication Date: 2011-12-07
COUNCIL OF SCI & IND RES
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Thus, we have found that prior art methods of preparing rutile titania are spontaneous with little or no control over morphology unless templated
Furthermore, the result of the prior art method is a mixture of spherical, broom-like or rod-shaped rutile titanium dioxide
At the same time, it is very cumbersome to separate any particular form of nanocrystals from other forms
In addition, there is no method in the prior art to disclose a one-step room temperature method for synthesizing rutile titanium dioxide nanoneedles
Also, the prior art methods all suffer from the disadvantage of having to carry out the reaction above room temperature, about 50°C

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
  • One-step electrochemical method for the synthesis of pure rutile-type titania nanoneedles
  • One-step electrochemical method for the synthesis of pure rutile-type titania nanoneedles
  • One-step electrochemical method for the synthesis of pure rutile-type titania nanoneedles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] 3.5ml of HClO 4 The anodizing bath of the solution in 30 ml of water was maintained at 25 degrees Celsius. Platinum was used as the cathode and titanium foil as the anode with a distance of 1 cm between the foils. A voltage of about 8 volts is applied between the two electrodes, resulting in the instantaneous evolution of hydrogen gas at the cathode in the cell and the dissolution of Ti at the anode into rutile TiO 2 nanoneedles, which were washed and air-dried at ambient temperature to obtain rutile-type titanium dioxide nanoneedles.

[0044] Advantages of the invention

[0045] 1. The present invention provides a kind of only one-step synthetic rutile type TiO 2 Electrochemical approach to nanoneedles.

[0046] 2. In the present invention, pure rutile TiO is formed 2 .

[0047] 3. No intermediate amorphous powder or anatase phase is formed, thus no heat treatment is required to form rutile TiO 2 , which reduces synthesis time as well as cost.

[0048] 4. The p...

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
Login to View More

Abstract

A one step, room temperature, electrochemical process for the synthesis of rutile titanium dioxide nanoneedles with high aspect ratio is disclosed herein.

Description

technical field [0001] The invention relates to a one-step electrochemical method for synthesizing pure rutile titanium dioxide nanoneedles with high aspect ratio at room temperature. The present invention further relates to a room temperature method for synthesizing rutile titanium dioxide nanoneedles. Background technique [0002] Titanium dioxide occurs in nature as rutile, anatase and brookite. Rutile titanium dioxide is widely used as UV protectant, optical coating, beam splitter and anti-reflective coating. It can also be used as a humidity sensor and a high temperature oxygen sensor. [0003] Multiple synthetic methods have been documented for TiO 2 Control of phase formation and morphology of nanoparticles. Typically, these synthetic routes result in a mixture of anatase and rutile polymorphs. [0004] Rutile TiO 2 Powders are usually obtained by transforming anatase to rutile at temperatures above 450°C or by flame oxidation of TiCl 4 get. These methods resu...

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): C01G23/047C01G23/053C25D1/00
CPCC01P2004/04B82Y30/00C01G23/047C01P2004/16C01G23/053C01P2002/72C25B1/00C01P2004/10C01P2004/64C25D11/02
Inventor R·S·雅姆R·K·伯塞尔S·B·奥加勒
Owner COUNCIL OF SCI & IND RES