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

Preparation method of ruthenium-molybdenum dioxide nanojunction and use thereof

A molybdenum dioxide, nano-junction technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve problems that hinder large-scale industrial application and cannot meet industrialization needs , the activity and stability are not as good as other problems, to achieve the effect of outstanding catalytic activity and cycle stability, long working time and simple method

Active Publication Date: 2017-06-13
UNIV OF SCI & TECH OF CHINA
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrolysis of water requires a high overpotential, which will result in a large amount of energy consumption. Efficient and stable electrocatalysts can reduce the overpotential of electrolyzed water. Therefore, the development of catalysts that can efficiently evolve hydrogen in both acidic and alkaline media is of great importance to the existing industrialization. Technology has important research and application value
[0003] Noble metals such as platinum and palladium have good electrocatalytic water splitting performance, but their high price and scarce reserves seriously hinder their large-scale industrial application.
Although transition metals have certain electrocatalytic activity, their activity and stability are far inferior to noble metal-based catalysts, which cannot meet the needs of industrialization.

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 ruthenium-molybdenum dioxide nanojunction and use thereof
  • Preparation method of ruthenium-molybdenum dioxide nanojunction and use thereof
  • Preparation method of ruthenium-molybdenum dioxide nanojunction and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of ruthenium-molybdenum dioxide nano junction in this embodiment is as follows:

[0041] 1. Dissolve 2.26 grams of molybdenum hexacarbonyl and 1.5 grams of trimesic acid in 100 milliliters of oxygen-free N,N-dimethylformamide (DMF), then use argon as a protective gas at 156°C for 5 days at reflux, then Cool down to room temperature, centrifuge and vacuum dry to obtain Mo-btc.

[0042] 2. Disperse 50 mg of molybdenum-trimesic acid complex (Mo-btc) particles in 30 mL of absolute ethanol, then add 1.1 mL of RuCl with a concentration of 0.01 g / mL 3 solution, magnetically stirred for 12 hours and then centrifuged and vacuum-dried to obtain the ruthenium-modified Mo-btc precursor;

[0043] 3. Put the ruthenium-modified Mo-btc precursor in a tube furnace, raise the temperature to 700°C at a heating rate of 5°C / min in a nitrogen atmosphere and keep it for 3 hours, then cool to room temperature to obtain molybdenum dioxide-loaded ruthenium Nanojunction (...

Embodiment 2

[0045] The preparation method of ruthenium-molybdenum dioxide nano junction in this embodiment is as follows:

[0046] 1. Dissolve 2.26 grams of molybdenum hexacarbonyl and 1.5 grams of trimesic acid in 100 milliliters of oxygen-free N,N-dimethylformamide (DMF), then use argon as a protective gas at 156°C for 5 days at reflux, then Cool down to room temperature, centrifuge and vacuum dry to obtain Mo-btc.

[0047] 2. Disperse 50 mg of molybdenum-trimesic acid complex (Mo-btc) particles in 30 mL of absolute ethanol, then add 2.2 mL of RuCl with a concentration of 0.01 g / mL 3 solution, magnetically stirred for 12 hours and then centrifuged and vacuum-dried to obtain the ruthenium-modified Mo-btc precursor;

[0048] 3. Put the ruthenium-modified Mo-btc precursor in a tube furnace, raise the temperature to 700°C at a heating rate of 5°C / min in a nitrogen atmosphere and keep it for 3 hours, then cool to room temperature to obtain molybdenum dioxide-loaded ruthenium Nanojunction (...

Embodiment 3

[0050] The preparation method of sample 3 ruthenium-molybdenum dioxide nano junction in the present embodiment is as follows:

[0051] 1. Dissolve 2.26 grams of molybdenum hexacarbonyl and 1.5 grams of trimesic acid in 100 milliliters of oxygen-free N,N-dimethylformamide (DMF), then use argon as a protective gas at 156°C for 5 days at reflux, then Cool down to room temperature, centrifuge and vacuum dry to obtain Mo-btc.

[0052] 2. Disperse 50 mg of molybdenum-trimesic acid complex (Mo-btc) particles in 30 mL of absolute ethanol, then add 4.4 mL of RuCl with a concentration of 0.01 g / mL 3 solution, magnetically stirred for 12 hours and then centrifuged and vacuum-dried to obtain the ruthenium-modified Mo-btc precursor;

[0053] 3. Put the ruthenium-modified Mo-btc precursor in a tube furnace, raise the temperature to 700°C at a heating rate of 5°C / min in a nitrogen atmosphere and keep it for 3 hours, then cool to room temperature to obtain molybdenum dioxide-loaded ruthenium...

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 preparation method of a ruthenium-molybdenum dioxide nanojunction and use thereof. The molybdenum dioxide loaded ruthenium nanojunction is prepared by taking a noble metal ruthenium modified molybdenum-based metal organic frame material as a precursor, so that an electrochemical hydrogen evolution catalyst which is high in activity and high in stability is obtained. The dosage of the noble metal is reduced by constructing the nanojunction, and the electrochemical hydrogen evolution catalyst which is high in activity and high in stability in acid and base media is obtained, and the dosage of the noble metal is reduced while the performance of the catalyst is enhanced, and the nanojunction has a good electrocatalytic practical prospect.

Description

technical field [0001] The invention relates to a nano junction, in particular to a preparation method and application of a ruthenium-molybdenum dioxide nano junction, belonging to the technical field of electrocatalysts. Background technique [0002] Hydrogen energy is a zero-emission energy with the advantages of high energy density and abundant sources. Due to the increasingly serious problems such as energy crisis and environmental pollution, hydrogen energy is considered to be the most potential alternative to fossil energy. Compared with the existing industrial hydrogen production technology, hydrogen production by electrolysis of water is not only pollution-free, but also has efficient and sustainable energy conversion efficiency. The electrolysis of water can be carried out in both alkaline and acidic media, among which alkaline hydrogen evolution using proton exchange membranes has achieved commercial application. However, electrolysis of water requires a high ove...

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): B01J23/652C25B11/08C25B1/04
CPCC25B1/04B01J23/6525C25B11/093B01J35/33Y02E60/36
Inventor 陈乾旺江鹏
Owner UNIV OF SCI & TECH OF CHINA
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