Method for preparing rare-earth ion doped titanate nanotube

A technology of titanate nanotubes and rare earth elements, applied in the field of ion exchange doping, can solve the problem of unsatisfactory visible light activity

Inactive Publication Date: 2011-04-27
HENAN NORMAL UNIV +1
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is generally believed that the nanotubes prepared by the hydrothermal method can actually be called titanic acid or titanate nanotubes, and their composition is H

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] (1) Prepare titanate nanotubes by a known hydrothermal method. 1.0 g TiO 2 Add it to 10 M NaOH aqueous solution, stir for 20 minutes, put it into a high-pressure reactor at 150-220 ° C for 24-36 h, take it out and wash it with deionized water until it is neutral, then immerse it in 0.1M HCl to acidify for 5-8 h, and then use it to Wash with ionic water until neutral. Dry at 80°C for 10 h and then grind to make titanate nanotubes.

[0007] (2) Put 1 g of titanate nanotubes prepared above into a solution containing rare earth element ions that need to be doped, the solution concentration is 0.01 M, stir at room temperature for 24 h to reach ion exchange equilibrium, and then wash with deionized water Then dry at 80°C for 10 hours.

[0008] (3) Calcining the doped nanotubes at 300°C.

Embodiment 2

[0010] (1) Prepare titanate nanotubes by a known hydrothermal method. 1.0 g TiO 2 Add it to 10 M NaOH aqueous solution, stir for 20 minutes, put it into a high-pressure reactor at 150-220 ° C for 24-36 h, take it out and wash it with deionized water until it is neutral, then immerse it in 0.1M HCl to acidify for 5-8 h, and then use it to Wash with ionic water until neutral. Dry at 80°C for 10 h and then grind to make titanate nanotubes.

[0011] (2) Put 1 g of titanate nanotubes prepared above into a solution containing rare earth element ions that need to be doped, the solution concentration is 0.1 M, stir at room temperature for 24 h to reach ion exchange equilibrium, and then wash with deionized water Then dry at 80°C for 10 hours.

[0012] (3) Calcining the doped nanotubes at 500°C.

Embodiment 3

[0014] (1) Prepare titanate nanotubes by a known hydrothermal method. 1.0 g TiO 2 Add it to 10 M NaOH aqueous solution, stir for 20 minutes, put it into a high-pressure reactor at 150-220 ° C for 24-36 h, take it out and wash it with deionized water until it is neutral, then immerse it in 0.1M HCl to acidify for 5-8 h, and then use it to Wash with ionic water until neutral. Dry at 80°C for 10 h and then grind to make titanate nanotubes.

[0015] (2) Take 1 g of the above-prepared titanate nanotubes and put them into a solution containing rare earth element ions that need to be doped. Then dry at 80°C for 10 hours.

[0016] (3) Calcining the doped nanotubes at 800°C.

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 method for preparing a rare-earth ion doped titanate nanotube, relating to doping through ion exchange. The titanate nanotube has high visible light activity. The technical scheme is as follows: the method comprises a method for preparing the titanate nanotube by a hydrothermal method and is characterized by (1) putting 1 part by weight of titanate nanotube into rare-earth ion aqueous solution, stirring the mixture at room temperature until ion exchange equilibrium is achieved, then washing the mixture with deionized water and drying the mixture to remove the moisture, wherein the concentration of the rare-earth aqueous solution is 0.01-0.5M; and (2) calcining the doped titanate nanotube prepared in the step (1) at 300-1000 DEG C to prepare the rare-earth ion doped titanate nanotube. The method is used for doping the titanate nanotube.

Description

Technical field: [0001] The invention relates to ion exchange doping, in particular to a method for preparing rare earth element ion doped titanate nanotubes. Background technique: [0002] Hydrothermal method is the preparation of TiO 2 Common methods for nanotubes. TiO 2 Nanoparticles undergo a series of chemical reactions with concentrated alkali solution at high temperature, and then undergo pickling and calcination to obtain TiO 2 nanotube. The method is simple to operate and low in cost. It is generally believed that the nanotubes prepared by the hydrothermal method can actually be called titanic acid or titanate nanotubes, and their composition is H 2 Ti 3 o 7 , Na x h 2-x Ti 3 o 7 , H 2 Ti 5 o 11 ·H 2 O or H 2 Ti 4 o 9 ·H 2 O, but the visible light activity of this titanate nanotube is not ideal. Invention content: [0003] The purpose of the present invention is to provide a preparation method of rare earth element ion-doped titan...

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
IPC IPC(8): C01G23/00B82Y40/00
Inventor 刘国光刘海津谢友海吕文英汪应灵
Owner HENAN NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap