Preparation method of graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant and its products and applications

A graphene, ultra-small palladium technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of formic acid catalytic oxidation activity and cycle stability are not good enough

Inactive Publication Date: 2021-05-04
QINGDAO UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used palladium-carbon catalysts are not good enough in terms of catalytic oxidation activity and cycle stability of formic acid to meet the needs of current commercialization.

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 graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant and its products and applications
  • Preparation method of graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant and its products and applications
  • Preparation method of graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant and its products and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing a graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant, comprising the following steps:

[0039] 1) Add 30.46mg of palladium acetylacetonate (n(Pd)=0.1mol) and 3.99mg of copper acetate (n(Cu)=0.02mol) into 5mL of benzyl alcohol solution and mix well by ultrasonication for 5min with a power of 600W;

[0040] 2) Add 50mg of ascorbic acid (Vc), 86mg of polyvinylpyrrolidone (PVP) and 19.8mg of graphene into 10mL of ethanol and mix well by ultrasonication for 80min with a power of 600W;

[0041] 3) Ultrasonicate the solution obtained in step 1) and step 2) for 20min with a power of 600W, mix evenly, transfer to a 50ml glass bottle, heat to 95°C for 13h in a blast drying oven;

[0042] 4) The obtained product is centrifuged and washed with a mixed solution of ethanol and water with a volume ratio of 1:1 to 2:1, and then vacuum-dried at 60°C for 10 hours.

[0043] figure 1 For the transmission electron mi...

Embodiment 2

[0049] A method for preparing a graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant, comprising the following steps:

[0050] 1) Add 30.46mg of palladium acetylacetonate (n(Pd)=0.1mol) and 19.97mg of copper acetate (n(Cu)=0.1mol) into 5mL of benzyl alcohol solution and mix well by ultrasonication for 10min with a power of 100W;

[0051] 2) Add 50mg of ascorbic acid (Vc), 86mg of polyvinylpyrrolidone (PVP) and 19.8mg of graphene into 10mL of ethanol and ultrasonically mix for 60min, with a power of 600W;

[0052] 3) Ultrasonicate the solution obtained in step 1) and step 2) for 30min with a power of 100W, mix evenly, transfer to a 50ml glass bottle, heat to 80°C in a blast drying oven and keep it warm for 15h;

[0053] 4) The obtained product is centrifuged and washed with a mixed solution of ethanol and water with a volume ratio of 1:1 to 2:1, and then vacuum-dried at 60°C for 10 hours.

[0054] Figure 5 The transmission elec...

Embodiment 3

[0060] A method for preparing a graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant, comprising the following steps:

[0061] 1) Add 20mg of palladium acetylacetonate (n(Pd)=0.1mol) and 6.66mg of copper acetate (n(Cu)=0.03mol) into 5m L of benzyl alcohol solution and mix well by ultrasonication for 5min with a power of 600W;

[0062] 2) Add 50mg of ascorbic acid (Vc), 86mg of polyvinylpyrrolidone (PVP) and 19.8mg of graphene into 10mL of ethanol and mix well by ultrasonication for 80min with a power of 600W;

[0063] 3) Ultrasonicate the solution obtained in step 1) and step 2) for 30min with a power of 100W, mix evenly, transfer to a 50ml glass bottle, heat to 120°C for 10h in a blast drying oven;

[0064] 4) The obtained product is centrifuged and washed with a mixed solution of ethanol and water with a volume ratio of 1:1 to 2:1, and then vacuum-dried at 60°C for 10 hours.

[0065] Figure 9 The transmission electron micros...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for preparing a graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant and its product and application. The preparation method includes adding palladium acetylacetonate and copper acetate to a benzyl alcohol solution and ultrasonically mixing to obtain solution A; Add ascorbic acid, polyvinylpyrrolidone and graphene to ethanol and ultrasonically mix to obtain solution B; after step 1) and step 2), solution A and solution B obtained by ultrasonic mixing are heated to 80-120°C and kept for 10- 15 hours; the obtained product was dried after centrifugal cleaning to obtain a graphene-supported ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidizer. The prepared catalyst has a large electrochemically active specific surface area, high formic acid catalytic oxidation activity, more negative initial oxidation potential and excellent cycle stability, and the method does not involve the use of highly toxic materials, and is easy to operate and repeatable High, suitable for large-scale preparation.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and relates to a method for preparing a graphene-loaded ultra-small palladium-copper nano-dot high-performance formic acid catalytic oxidant, and also relates to a product prepared by the method and its application. Background technique [0002] Direct formic acid fuel cell (DFAFC) has the advantages of low pollution, high energy conversion efficiency, environmental friendliness, and low operating noise. It has broad application prospects in automotive power and portable power. Formic acid oxidation is an essential anode catalytic reaction for direct formic acid fuel cells. At present, the commonly used palladium-carbon catalysts are not good enough in catalytic oxidation activity and cycle stability of formic acid to meet the needs of current commercialization. In order to accelerate the commercialization of direct formic acid fuel cells, it is particularly important to research and prepare ...

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 Patents(China)
IPC IPC(8): H01M4/88H01M4/90H01M4/92B82Y30/00
CPCB82Y30/00H01M4/8825H01M4/9041H01M4/9083H01M4/921H01M4/926Y02E60/50
Inventor 张连营巩玉燕吴棣本宫阳阳李智赵修松
Owner QINGDAO 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