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

A kind of preparation method of titanium dioxide nanowire array

A nanowire array, titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of strong corrosion, the orientation of nanowire arrays, etc., to achieve accelerated hydrothermal reaction, controllable wire diameter and length , the effect of broad application prospects

Active Publication Date: 2019-01-29
XIAMEN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extensive use of hydrochloric acid has a strong corrosive effect on the reactor equipment; at the same time, the high content of chloride ions leads to certain problems in the orientation of the nanowire array

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 titanium dioxide nanowire array
  • A kind of preparation method of titanium dioxide nanowire array
  • A kind of preparation method of titanium dioxide nanowire array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific steps. Example 1 mainly describes the preparation of titanium dioxide nanowires by mixing hydrochloric acid and acetic acid.

[0036] Step 1. Cleaning of FTO

[0037] First cut the 2mm thick FTO glass into 20mm×20mm glass pieces to make it suitable for the size of the reactor lining, then wash it with washing powder, and then use appropriate amount of acetone, ethanol, and deionized water at a frequency of 100Hz Ultrasound for 15 minutes, and then placed in an oven to dry. The dried glass slices were treated in an ultraviolet ozone machine for 15 minutes.

[0038] Step 2, preparation of titanium dioxide seed crystal layer

[0039]1. Add 7.5ml of ethanol, 89ul of deionized water and 3.6ul of concentrated nitric acid into a 25ml beaker in turn, seal it with a parafilm, stir it magnetically for 10min, and make solution A. 7.5ml of ethanol was added...

Embodiment 2

[0049] The procedure is the same as in Example 1, except that the 2 mL of acetic acid added in the first small step in step 3 is replaced by 2 mL of hexanoic acid.

[0050] The obtained nanowire surface and cross-sectional SEM images, such as Figure 4 shown. It can be seen from the figure that the diameter of the nanowire can be controlled between 20 and 50 nm, and the length is about 700 nm. Compared with the nanowires under the acetic acid reaction conditions in Example 1, the diameter of the nanowires becomes thinner and the length becomes shorter.

Embodiment 3

[0052] The procedure is the same as in Example 1, except that the 2 mL of acetic acid added in the first small step in step 3 is replaced by 2 mL of n-butyric acid.

[0053] The obtained nanowire surface and cross-sectional SEM images, such as Figure 5 shown. It can be seen from the figure that the diameter of the nanowire can be controlled between 20 and 50 nm, and the length is about 900 nm. Compared with the nanowires in the hexanoic acid reaction conditions in Example 2, the diameter of the nanowires remained basically the same, but the length of the nanowires changed and became shorter.

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
percent by volumeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of titanis nanowire arrays and relates to preparation of nano materials with an aim to provide the preparation method which is efficient, rapid and controllable. The preparation method includes: washing the surface of a substrate thoroughly; dispersing an alcohol salt solution of titanium into ethyl alcohol, adding hydrochloric acid, inhibiting hydrolysis of a titanium source, coating the surface of the substrate to spread into a film after mixing, and generating a titania seeding layer after calcination; placing the substated coated with the titania seedling layer into a closed high-pressure hydrothermal reactor system, adding a polymeric precursor solution of acetone, tetrabutyl titanate and mixed acid, and performing hydrothermal reaction to obtain the titanis nanowire arrays. The hydrochloric acid is composited with organic acid to serve as an acidity medium of the hydrothermal reaction, oriented growth of the titanis nanowire arrays is realized, the titanis nanowire arrays prepared with the method have the advantages of high orientation, good crystallization, controllable wire diameter and length, rapid production rate, simpleness in equipment and the like, and wide application prospect is achieved.

Description

technical field [0001] The invention relates to the preparation of nanometer materials, in particular to a method for preparing titanium dioxide nanowire arrays. Background technique [0002] Today's society and economy are developing rapidly and people's material life is getting richer and richer. However, the rapid economic development also brings a great burden to the environment and ecology. Therefore, green and friendly energy has attracted widespread attention from all over the world. Titanium dioxide materials are widely used in solar cells, photocatalysis, sensors, nanoelectronics and new energy. [0003] Compared with zero-dimensional titanium dioxide nanoparticles and three-dimensional nanoblocks, one-dimensional titanium dioxide nanowire arrays have more advantages in practical applications, including: orientation growth, large specific surface area, uniform and controllable size. More importantly, since the carriers can move rapidly over a longer distance in the...

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): C01G23/08
CPCC01G23/08C01P2004/03C01P2004/10
Inventor 李鑫崔千黄海宁朱佩杨隆凯曹冰冰
Owner XIAMEN UNIV