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Flower-like gold palladium heterogeneous nano particle with good electro-catalytic property and preparing method thereof

A nano-particle and gold-palladium technology is applied in the field of flower-shaped gold-palladium heterogeneous nanoparticles and their preparation, and achieves the effects of good dispersibility, uniform particle size and abundant raw materials

Inactive Publication Date: 2015-09-16
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, choosing an environmentally friendly technology to synthesize flower-shaped gold-palladium heterogeneous nanoparticles still faces many challenges, and its synthesis process is rarely reported.

Method used

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  • Flower-like gold palladium heterogeneous nano particle with good electro-catalytic property and preparing method thereof
  • Flower-like gold palladium heterogeneous nano particle with good electro-catalytic property and preparing method thereof
  • Flower-like gold palladium heterogeneous nano particle with good electro-catalytic property and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] Preparation of flower-like gold-palladium (gold-palladium ratio 1:1) heterogeneous nanoparticles

[0027] Under the condition of magnetic stirring, add successively to the ethylene glycol solution, ascorbic acid (AA), trisodium citrate dihydrate (C 6 h 5 Na 3 o 7 . 2H 2 O), gold (Au) nano-decahedral colloidal solution, sodium tetrachloropalladate (Na 2 PdCl 4 ) aqueous solution, in which ascorbic acid (AA), trisodium citrate dihydrate (C 6 h 5 Na 3 o 7 .2H 2 O), gold (Au) nano decahedron, sodium tetrachloropalladate (Na 2 PdCl 4 ) concentrations were 0.0005 mol / L, 0.00075 mol / L, 0.00025 mol / L, and 0.00025 mol / L; subsequently, the precursor solution was reacted at a reaction temperature of 75 degrees Celsius for 0.5 hours, and the obtained flower-shaped gold palladium iso quality nanoparticle colloidal solution, such as figure 1 As shown in b, centrifuge with a high-speed centrifuge, centrifuge at a speed of 10,000 rpm for 30 minutes, remove the colorle...

Embodiment 2

[0029] Preparation of Flower-like Au-Pd (Au-Pd Ratio 1:2) Heterogeneous Nanoparticles

[0030] Under the condition of magnetic stirring, add successively to the ethylene glycol solution, ascorbic acid (AA), trisodium citrate dihydrate (C 6 h 5 Na 3 o 7 . 2H 2 O), gold (Au) nano-decahedral colloidal solution, sodium tetrachloropalladate (Na 2 PdCl 4 ) aqueous solution, in which ascorbic acid (AA), trisodium citrate dihydrate (C 6 h 5 Na 3 o 7 . 2H 2 O), gold (Au) nano decahedron, sodium tetrachloropalladate (Na 2 PdCl 4 ) concentrations were 0.0005 mol / L, 0.00075 mol / L, 0.00025 mol / L, and 0.0005 mol / L; subsequently, the precursor solution was reacted at a reaction temperature of 75 degrees Celsius for 0.5 hours, and the obtained flower-shaped gold palladium iso quality nanoparticle colloidal solution, such as figure 1 As shown in b, centrifuge with a high-speed centrifuge, centrifuge at a speed of 10,000 rpm for 30 minutes, remove the colorless solution in the...

Embodiment 3

[0032] Preparation of Flower-like Au-Pd (Au-Pd Ratio 1:3) Heterogeneous Nanoparticles

[0033] Under the condition of magnetic stirring, add successively to the ethylene glycol solution, ascorbic acid (AA), trisodium citrate dihydrate (C 6 h 5 Na 3 o 7 . 2H 2 O), gold (Au) nano-decahedral colloidal solution, sodium tetrachloropalladate (Na 2 PdCl 4 ) aqueous solution, in which ascorbic acid (AA), trisodium citrate dihydrate (C 6 h 5 Na 3 o 7 . 2H 2 O), gold (Au) nano decahedron, sodium tetrachloropalladate (Na 2 PdCl 4 ) concentrations were 0.0005 mol / L, 0.00075 mol / L, 0.00025 mol / L, and 0.00075 mol / L; subsequently, the precursor solution was reacted at a reaction temperature of 75 degrees Celsius for 0.5 hours, and the obtained flower-shaped gold palladium iso quality nanoparticle colloidal solution, such as figure 1 As shown in b, centrifuge with a high-speed centrifuge, centrifuge at a speed of 10,000 rpm for 30 minutes, remove the colorless solution in th...

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Abstract

The invention relates to a flower-like gold palladium heterogeneous nano particle with a good electro-catalytic property and a preparing method thereof. The preparing method of the particle includes the following steps that firstly, under the condition of magnetic force stirring, ascorbic acid (AA), sodium citrate, dehydrate (C6H5Na3O7.2H2O), an aurum (Au) decahedron colloidal solution and a disodium tetrachloropalladate (Na2PdC14) water solution are added to an ethylene glycol solution in sequence; secondly, a reaction polymeric precursor solution is placed at the reaction temperature of 25-75 DEG C for 0.2-1 hour, and then centrifuging is conducted for 15-50 minutes under the condition of the rotation speed of 5000-15000 turns per minute; thirdly, solvent ultrasonic is used for cleaning dark blue precipitate products, and therefore the flower-like gold palladium heterogeneous nano particle is prepared. The flower-like gold palladium heterogeneous nano particle has important application value in the aspects of direct alcohol fuel batteries, surface enhanced Raman scattering (SERS), chemical and biological sensors and the like.

Description

Technical field [0001] The present invention involves a flower -shaped golden cricket heterogeneous nanoparticle with excellent electrical catalytic performance. Background technique [0002] The low -temperature oxidation of CO, catalytic oxidation of alcohol, synthesis of alcoholic oxidation in CO, alcoholic oxidation, alcohol -ethylene hydrogen chloride reactions, olefin ring oxidation, and direct preparation of hydrogen peroxide in hydrogen and oxygen.In addition, the synergy of Jinye has a significant effect on the oxidation of alcohol.For example, when oxidizing benzilitol to benaldehyde, the conversion rate can be increased by 10 to 100 times when using golden nanoparticles or nano -nanoparticles by using golden nucleus shells.Therefore, the dual -metal nanoparticles composed of golden crickets have become a research hotspot in the field of catalytic.At present, the synthetic size is uniform, the appearance of the metal nanoparticles with controllable appearance has made g...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/24B01J23/52C07C47/07C07C45/38B82Y30/00B82Y40/00
Inventor 李杰李村成张涛张风收孙一强徐波刘广宁
Owner UNIV OF JINAN
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