Preparation method of tin-doped titanium dioxide

A titanium dioxide and tin doping technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of poor product dispersion, achieve the effects of improving catalytic activity, increasing lattice defect density, and increasing oxygen storage capacity

Inactive Publication Date: 2014-01-22
HEILONGJIANG UNIV
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to prepare Sn in order to solve existing method 4+ ion-doped TiO 2 The method, the tech

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 tin-doped titanium dioxide
  • Preparation method of tin-doped titanium dioxide
  • Preparation method of tin-doped titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Specific embodiment 1: The preparation method of tin-doped titanium dioxide in this embodiment is as follows:

[0018] 1. Add butyl phthalate and crystalline tin tetrachloride to 4mL of absolute ethanol at a molar ratio of 8-18:2, stir for 10 minutes, add 35mL of ethylene glycol and stir for 10 minutes, then add 1mL of concentrated hydrochloric acid in turn And 1mL deionized water, stir for 10 minutes, add 0.2~0.8g polyvinylpyrrolidone, and stir for 12~48 hours to obtain a stable and transparent yellow sol;

[0019] 2. Transfer the yellow sol obtained in step 1 to a stainless steel reactor lined with polytetrafluoroethylene, react for 24 hours at 160-180°C, cool to room temperature naturally, and wash with absolute ethanol and distilled water for 6-8 Second, filter with 0.22μm microporous membrane to collect white precipitate;

[0020] 3. Dry the white precipitate at 60-80°C for 3-8 hours, grind, and package to obtain tin-doped titanium dioxide.

Example Embodiment

[0021] Specific embodiment two: this embodiment is different from specific embodiment one in that the molar ratio of butyl phthalate to crystalline tin tetrachloride in step one is 8:2. Others are the same as the first embodiment.

Example Embodiment

[0022] Specific embodiment three: This embodiment is different from one of specific embodiments one or two in that the molar ratio of butyl phthalate to crystalline tin tetrachloride in step one is 9:1. Others are different from the first or second embodiment.

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
Grain sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of tin-doped titanium dioxide, and relates to a preparation method of titanium dioxide. The preparation method disclosed by the invention is used for solving the technical problem that the product obtained by existing methods for preparing Sn4<+> ion-doped TiO2 is poor in dispersibility. The preparation method comprises the following steps: adding dibutyl phthalate and crystalloid tin tetrachloride into absolute ethyl alcohol; adding ethylene glycol; then, sequentially adding concentrated hydrochloric acid and deionized water; adding polyvinylpyrrolidone; stirring to obtain a stable and transparent yellow sol; transferring the yellow sol to a stainless steel reaction kettle for reaction with a polytetrafluoroethylene liner; naturally cooling to room temperature; washing with absolute ethyl alcohol and distilled water; filtering; collecting a white precipitate; drying the white precipitate, grinding and packaging to obtain the tin-doped titanium dioxide. The tin-doped titanium dioxide prepared by the method provided by the invention is better in dispersibility, and the grain size is about 10 nanometers. The invention belongs to the field of preparation of titanium dioxide.

Description

technical field [0001] The invention relates to a preparation method of titanium dioxide. Background technique [0002] TiO 2 It is an important inorganic functional semiconductor material. It is widely used in photocatalytic degradation of organic pollutants, lithium-ion batteries, solar photosensitized batteries and electrocatalyst carriers due to its advantages of non-toxicity, acid and alkali resistance, and wide range of sources. Many fields. How to improve and further improve TiO 2 Performance was once a research hotspot. Among them, through metal doping is to improve the TiO 2 One of the important methods of catalytic performance and stability. [0003] sn 4+ Ion doping can significantly improve TiO 2 stability and catalytic activity. Preparation of Sn 4+ ion-doped TiO 2 The difficulty of nanoparticles is that the hydrolysis rate of the titanium source is too fast, and it is difficult to control its TiO by the traditional sol-gel method. 2 Nucleation, growt...

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): C01G23/047B01J23/14
Inventor 刘春涛李亚北王阔谷宇刘艳莹
Owner HEILONGJIANG 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