Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Flocculent palladium nanomaterial, and preparation method and application thereof

A palladium nano and flocculent technology, which is applied in the field of flocculent palladium nanomaterials and its preparation, can solve the problems of stability and unsatisfactory palladium catalytic efficiency, and achieve the effects of low cost, simple preparation method and stable performance

Active Publication Date: 2019-06-07
SHANXI UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability and palladium catalytic efficiency of these two traditional materials are not very ideal.

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
  • Flocculent palladium nanomaterial, and preparation method and application thereof
  • Flocculent palladium nanomaterial, and preparation method and application thereof
  • Flocculent palladium nanomaterial, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 40mL of 0.07mol / L zinc acetate ethanol solution and 20mL of 0.25mol / L sodium hydroxide solution were reacted at 0°C for 8 hours to synthesize zinc oxide quantum dots. Mix 10mL, 0.2g / mL palladium chloride and zinc oxide quantum dots at a mass ratio of 5:1, stir at room temperature for 8 hours, then add to the reaction kettle (pH 8.0), and react at 180°C for 3 hours, Synthesis of ZnO quantum dot composites wrapped in palladium nanoparticles (such as figure 1 Shown, wherein a is the TEM image of the zinc oxide quantum dot composite wrapped by palladium nanoparticles, and b is the EDX spectrum of the zinc oxide quantum dot composite wrapped by palladium nanoparticles).

[0026] The zinc oxide quantum dot complex wrapped by palladium nanoparticles was placed in the disodium hydrogen phosphate-citric acid buffer of pH 3.0, and the zinc oxide quantum dots were acidolyzed for 0.5 hours to prepare flocculent palladium nanomaterials (such as figure 2 Shown, wherein a is a large...

Embodiment 2

[0028] Take 0.001 mg of the flocculent palladium nanomaterial prepared in Example 1 and ultrasonically disperse it in 10 μL of ethanol solution, apply the solution all drop-coated on the surface of a glassy carbon electrode with a diameter of 3 mm, and dry at 60 degrees for 30 minutes to obtain the flocculent palladium nanomaterial The modified electrode is applied in the catalytic oxidation reaction of formic acid. The modified electrode was detected by cyclic voltammetry in 5mL 1.0M NaOH electrolyte solution, the concentration was formic acid solution, the platinum wire electrode was used as the counter electrode, the silver / silver chloride (Ag / AgCl) electrode was used as the reference electrode, and the flocculent palladium The nano-microsphere modified electrode is the working electrode. When the electrochemical working potential range is 0–1.4V, the cyclic voltammetry scan rate is 0.05V / s, and the concentration of formic acid in the electrolyte is 0 and 0.5M, the electroc...

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 flocculent palladium nanomaterial, and a preparation method and an application thereof. The preparation method comprises the following steps: standing and reacting zinc oxidequantum dots with a certain concentration and a palladium salt precursor at room temperature according to a certain ratio for a period of time, and carrying out a Schottky contact reaction on the zinc oxide quantum dots and the palladium salt precursor at a high temperature to synthesize a palladium nanoparticle-encapsulated zinc oxide quantum dot compound; and carrying out acidolysis on zinc oxide quantum dots at the pH value of the solution of below 5 by using the special acid-sensitive characteristic of the zinc oxide quantum dots to dissociate the zinc oxide quantum dots form the surrounding of nano-palladium in order to form the flocculent palladium nanomaterial. The preparation method of the invention is unique, and has a simple, economical and green process, and the prepared flocculent palladium nanomaterial has a uniform size and stable performances, and can be used for modifying electrodes in order to be applied to the field of electrochemical catalysis.

Description

technical field [0001] The invention relates to nanocomposite materials, in particular to a flocculent palladium nanomaterial and its preparation method and application. technical background [0002] In recent years, palladium nanomaterials have been widely used in coupling reactions, catalytic hydrogenation and oxidation reactions, and have been used in hydrogen storage materials and fuel cell catalytic electrodes and other fields. In the field of heterogeneous catalysis, nanotechnology can reduce its usage and improve its catalytic activity by changing the size and shape of nano-palladium. Therefore, the preparation method of new materials becomes the key to determine the performance of palladium nano-catalysts. At present, palladium nanomaterials mainly include carbon-supported metal palladium and palladium nanoparticles with relatively high utilization rate. However, the stability and palladium catalytic efficiency of these two traditional materials are not very ideal. ...

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): B01J23/60B22F9/24
Inventor 李忠平朱瑞琦李红荣董川
Owner SHANXI 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
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