Platinum/silver alloy nano-particle catalyst, method for preparing same and application of platinum/silver alloy nano-particle catalyst

A nanoparticle and silver alloy technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of easy aggregation of platinum nanoparticles, cyclicity, and non-precious metal performance Poor, limited crustal reserves and other problems, to achieve excellent electrochemical catalytic performance, simple and easy preparation method, the effect of simple preparation method

Inactive Publication Date: 2016-07-20
上海耀华铂制品有限公司
View PDF5 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, platinum is expensive and has limited reserves in the earth's crust. The performance of non-precious metal substitutes is inferior to platinum. The platinum nanoparticles in existing commercial Pt / C catalysts are easy to aggregate and have poor circulation.

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
  • Platinum/silver alloy nano-particle catalyst, method for preparing same and application of platinum/silver alloy nano-particle catalyst
  • Platinum/silver alloy nano-particle catalyst, method for preparing same and application of platinum/silver alloy nano-particle catalyst
  • Platinum/silver alloy nano-particle catalyst, method for preparing same and application of platinum/silver alloy nano-particle catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of platinum / silver alloy nano particle catalyst, described preparation method comprises the following steps:

[0030] Add 80uL of 0.01M chloroplatinic acid aqueous solution to 10mL of 0.1MCTAB aqueous solution, shake well, then add 600μL of 0.01M sodium borohydride ice water solution, shake well, and let it stand for 3 hours to obtain a seed solution;

[0031] Add 660 μL of 0.01M chloroplatinic acid aqueous solution, 40 μL of 0.01M silver nitrate aqueous solution, 400 μL of 1M hydrochloric acid solution, 320 μL of 0.1M ascorbic acid aqueous solution, and 200 μL of the seed solution prepared in step 1 to 40 ml of 0.1MCTAB aqueous solution. The platinum / silver alloy nano particle catalyst can be prepared by standing in a constant temperature oven at ℃ for 80 hours. It is 24% to measure the molar percentage composition of silver in the product by inductively coupled plasma atomic emission spectrometry (ICP-AES), measure its XRD spectrogram and ...

Embodiment 2

[0033] A kind of preparation method of platinum / silver alloy nano particle catalyst, described preparation method comprises the following steps:

[0034] Add 80uL of 0.01M chloroplatinic acid aqueous solution to 10mL of 0.1MCTAB aqueous solution, shake well, then add 600μL of 0.01M sodium borohydride ice water solution, shake well, and let it stand for 3 hours to obtain a seed solution;

[0035] Add 660 μL of 0.01M chloroplatinic acid aqueous solution, 400 μL of 0.01M silver nitrate aqueous solution, 400 μL of 1M hydrochloric acid solution, 320 μL of 0.1M ascorbic acid aqueous solution, and 200 μL of the seed solution prepared in step 1 to 40 ml of 0.1MCTAB aqueous solution. The platinum / silver alloy nanoparticle catalyst can be prepared by standing in a constant temperature oven at ℃ for 72 hours. It is 30% to measure the molar percentage composition of silver in the product by inductively coupled plasma atomic emission spectrometry (ICP-AES), measure its XRD spectrogram and ...

Embodiment 3

[0037] A kind of preparation method of platinum / silver alloy nano particle catalyst, described preparation method comprises the following steps:

[0038] Add 80uL of 0.01M chloroplatinic acid aqueous solution to 10mL of 0.1MCTAB aqueous solution, shake well, then add 600μL of 0.01M sodium borohydride ice water solution, shake well, and let it stand for 3 hours to obtain a seed solution;

[0039]Add 660 μL of 0.01M chloroplatinic acid aqueous solution, 1000 μL of 0.01M silver nitrate aqueous solution, 400 μL of 1M hydrochloric acid solution, 320 μL of 0.1M ascorbic acid aqueous solution, and 200 μL of the seed solution prepared in step 1 to 40 ml of 0.1MCTAB aqueous solution. The platinum / silver alloy nano particle catalyst can be prepared by standing in a constant temperature oven at ℃ for 70 hours. It is 34% to measure the molar percentage composition of silver in the product by inductively coupled plasma atomic emission spectrometry (ICP-AES), measure its XRD spectrogram and...

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
Login to view more

Abstract

The invention discloses a platinum/silver alloy nano-particle catalyst, a method for preparing the same and application of the platinum/silver alloy nano-particle catalyst. The method includes mixing cetyl trimethyl ammonium bromide aqueous solution, chloroplatinic acid aqueous solution and sodium borohydride ice aqueous solution with one another to obtain seed solution; mixing cetyl trimethyl ammonium bromide aqueous solution, chloroplatinic acid aqueous solution, silver nitrate aqueous solution, hydrochloric acid solution, ascorbic acid aqueous solution and the seed solution with one another to obtain the platinum/silver alloy nano-particle catalyst. The platinum/silver alloy nano-particle catalyst, the method and the application have the advantages that the method is simple, and reaction conditions are mild; the platinum/silver alloy nano-particle catalyst can be in different morphologies along with difference in the proportions of the added chloroplatinic acid aqueous solution to the added silver nitrate aqueous solution and have large specific surface areas; working electrodes further can be made from the platinum/silver alloy nano-particle catalyst, alcohol solution can be catalytically oxidized by the aid of electrochemical processes, and the alcohol catalytic oxidation activity of the platinum/silver alloy nano-particle catalyst is superior to the alcohol catalytic oxidation activity of commercial Pt/C catalysts.

Description

technical field [0001] The invention belongs to the technical field of inorganic noble metal nanomaterials and electrode catalytic materials, and specifically relates to a platinum / silver alloy nanoparticle catalyst, its preparation method and application. Background technique [0002] Due to its excellent catalytic performance, platinum-based catalysts have a wide range of important applications in environmental engineering, energy and other fields, such as catalytic oxidation of automobile exhaust, electrocatalysts for fuel cells, etc. At present, commercial Pt / C catalysts have been widely used in many fields, promoting the development of productivity. [0003] However, platinum is expensive and has limited reserves in the earth's crust. The performance of non-precious metal substitutes is inferior to platinum. The platinum nanoparticles in existing commercial Pt / C catalysts are easy to aggregate and have poor circulation. Therefore, improving the catalytic performance of...

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): B01J23/50C25B3/02C25B11/08C25B3/23
CPCB01J23/42B01J23/50B01J35/0013C25B3/23C25B11/093
Inventor 房彩虹赵俊赵贵丽
Owner 上海耀华铂制品有限公司
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