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

Method for preparing precious metal gold particle catalytically-grown stannic oxide nanowire

A noble metal and tin oxide technology, applied in the field of catalysis, can solve problems such as unsatisfactory performance, and achieve the effects of no need for post-processing, high product purity, and simple equipment and technology

Active Publication Date: 2013-04-17
EAST CHINA UNIV OF SCI & TECH
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there have been many reports in the literature on the preparation of nanomaterials with tin oxide nanowire structure, but their performance in gas sensors, solar cells, etc. is not ideal, and it is necessary to improve the preparation method to improve the performance of tin oxide

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
  • Method for preparing precious metal gold particle catalytically-grown stannic oxide nanowire
  • Method for preparing precious metal gold particle catalytically-grown stannic oxide nanowire
  • Method for preparing precious metal gold particle catalytically-grown stannic oxide nanowire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The precursor solution was formed by ultrasonically dissolving tin tetrachloride pentahydrate and chloroauric acid in absolute ethanol, in which the concentration of tin tetrachloride was 0.2 mol / l, and the molar ratio of Sn to Au was 100:1. The above-mentioned precursor solution is fed into the flame reaction zone with hydrogen / air as the auxiliary flame through a syringe pump and an atomizer at a feed rate of 4ml / min, and the hydrolysis reaction is carried out at a reaction temperature of 1800-2000°C. The total gas flow of hydrogen / air in the reaction flame is 1.8m 3 / h, the volume ratio of hydrogen / air is 1:5. The gaseous tin oxide generated by the hydrolysis reaction in the flame condenses and nucleates and grows along a certain direction under the induction and catalysis of the catalyst Au (VLS mechanism), and finally forms a tin oxide nanowire structure with noble metal gold particles at the tip. The nanowire has a diameter of 10-20 nm and a length of 0.2-0.5 μm....

Embodiment 2

[0024] The precursor solution was formed by ultrasonically dissolving tin tetrachloride pentahydrate and chloroauric acid in absolute ethanol, in which the concentration of tin tetrachloride was 0.1 mol / l, and the molar ratio of Sn to Au was 50:1. The above-mentioned precursor solution is fed into the flame reaction zone with hydrogen / air as the auxiliary flame through a syringe pump and an atomizer at a feed rate of 4ml / min, and the hydrolysis reaction is carried out at a reaction temperature of 1600-1800°C. The total gas flow of hydrogen / air in the reaction flame is 1.2m 3 / h, the volume ratio of hydrogen / air is 1:3. The gaseous tin oxide produced by the hydrolysis reaction in the flame is induced and catalyzed by the catalyst Au, condenses and grows along a certain direction, and finally forms a tin oxide nanowire structure with noble metal gold particles at the tip. The diameter of the nanowire is 10-20nm, length 0.1-1μm. The TEM photograph of the product is as figure ...

Embodiment 3

[0026] The precursor solution was formed by ultrasonically dissolving tin tetrachloride pentahydrate and chloroauric acid in absolute ethanol, in which the concentration of tin tetrachloride was 0.2 mol / l, and the molar ratio of Sn to Au was 250:1. The above-mentioned precursor solution is fed into the flame reaction zone with hydrogen / air as the auxiliary flame through a syringe pump and an atomizer at a feed rate of 4ml / min, and the hydrolysis reaction is carried out at a reaction temperature of 1800-2000°C. The total gas flow of hydrogen / air in the reaction flame is 1.8m 3 / h, the volume ratio of hydrogen / air is 1:5. The gaseous tin oxide produced by the hydrolysis reaction in the flame is induced and catalyzed by the catalyst Au, condenses and grows along a certain direction, and finally forms a tin oxide nanowire structure with noble metal gold particles at the tip. The diameter of the nanowire is 10~30nm, length 0.2~0.5um. The TEM photograph of the product is as imag...

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
diameteraaaaaaaaaa
lengthaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a precious metal gold particle catalytically-grown stannic oxide nanowire. The method comprises the following steps of: introducing a precursor into a flame reaction chamber under the drive of an injection pump and atomization diffusion of the oxygen by using tetrachlorostannane pentahydrate and absolute ethyl alcohol solution of chloroauric acid as the precursor; assisting the burning of diffusion flame and precursor solution to provide heat energy at the reaction temperature of 1,600-2,000 DEG C to obtain a highly-crystallized stannic oxide nanowire under a catalytic induction function of the precious metal gold particles and high-temperature flame atmosphere. The stannic oxide nanowire prepared by the method, of which the sharp end is provided with the precious metal gold particles, can generate interface plasma resonance effect together with stannic oxide serving as a semiconductor and can be widely applied to the fields of dye-sensitized solar cells, gas sensitive sensors and the like.

Description

technical field [0001] The invention relates to the field of catalysis, in particular to a method for preparing tin oxide nanowires catalyzed by noble metal gold particles. Background technique [0002] Inorganic semiconductor one-dimensional nanostructures, such as nanowires, nanorods, nanobelts, nanotubes and other nanomaterials, due to their unique physical and chemical properties of low dimensionality and quantum confinement effects, plus precise and controllable size and shape characteristics , has aroused great interest in recent years and is regarded as an ideal material for assembling high-performance nanodevices. Among them, tin dioxide (SnO 2 ) nanowires are especially valued for their wider applications. Tin dioxide is a good n-type semiconductor material. It not only has a wide band gap (3.6eV), but also has stable physical and chemical properties, good permeability to light, and high sensitivity to gases. It is widely used. In gas sensors, solar cells, optica...

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): C01G19/02B82Y30/00B01J23/52
Inventor 胡彦杰李春忠侯晓宇徐可心
Owner EAST CHINA UNIV OF SCI & TECH
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