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

heteroatom nitrogen surface modification mos 2 Preparation and Application of Nanomaterials

A nano-material and surface modification technology, applied in chemical/physical processes, physical/chemical process catalysts, structural parts, etc., can solve the problems of low oxygen evolution activity and complex catalyst preparation methods, and achieve simple reaction process and suitable for The effect of large-scale production and mild reaction conditions

Active Publication Date: 2021-06-29
QINGDAO UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high price of noble metal catalysts, low reserves and difficulty in wide application, and high overpotential of non-noble metal catalysts to waste energy, the present invention provides a heteroatom nitrogen surface modified MoS 2 The preparation and application of nanomaterials solve the current MoS 2 The catalyst preparation method is complicated and the technical problem of oxygen evolution activity is not high

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
  • heteroatom nitrogen surface modification mos <sub>2</sub> Preparation and Application of Nanomaterials
  • heteroatom nitrogen surface modification mos <sub>2</sub> Preparation and Application of Nanomaterials
  • heteroatom nitrogen surface modification mos <sub>2</sub> Preparation and Application of Nanomaterials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The first step: the carbon cloth (3*3cm 2 ) in acetone, ethanol, and water for 10 minutes in sequence, and set aside;

[0024] The second step: mix ammonium molybdate and thiourea in water in proportion, wherein the molar ratio of ammonium molybdate and thiourea is 1:5, and the volume of water is 35mL and stirred until completely dissolved to obtain a uniform solution;

[0025] Step 3: Transfer the uniformly stirred solution to a reaction kettle with a stainless steel substrate and put it into an ultrasonically passed carbon cloth, and place the reaction kettle in a blast drying oven at 180°C for 12 hours; after cooling down to room temperature, put The carbon cloth was taken out and rinsed with ethanol and water in turn, and dried to obtain MoS 2 nanosheet catalysts.

Embodiment 2

[0027] The first step: the carbon cloth (3*3cm 2 ) in acetone, ethanol, and water for 10 minutes in sequence, and set aside;

[0028] The second step: mix ammonium molybdate and thiourea in water in proportion, wherein the molar ratio of ammonium molybdate and thiourea is 1:5, and the volume of water is 35mL and stirred until completely dissolved to obtain a uniform solution;

[0029] Step 3: Transfer the uniformly stirred solution to a reaction kettle with a stainless steel substrate and put it into an ultrasonically passed carbon cloth, and place the reaction kettle in a blast drying oven at 180°C for 12 hours; after cooling down to room temperature, put The carbon cloth was taken out and rinsed with ethanol and water in turn, and dried to obtain MoS 2 nanosheet catalysts.

[0030] In the fourth step, 10mL of ammonia water is placed in the reactor, and the MoS 2 The nanosheets are placed above the ammonia water without contact with the ammonia water, and the reaction kett...

Embodiment 3

[0032] The first step: the carbon cloth (3*3cm 2 ) in acetone, ethanol, and water for 10 minutes in sequence, and set aside;

[0033] The second step: mix ammonium molybdate and thiourea in water in proportion, wherein the molar ratio of ammonium molybdate and thiourea is 1:5, and the volume of water is 35mL and stirred until completely dissolved to obtain a uniform solution;

[0034] Step 3: Transfer the uniformly stirred solution to a reaction kettle with a stainless steel substrate and put it into an ultrasonically passed carbon cloth, and place the reaction kettle in a blast drying oven at 180°C for 12 hours; after cooling down to room temperature, put The carbon cloth was taken out and rinsed with ethanol and water in turn, and dried to obtain MoS 2 nanosheet catalysts.

[0035] In the fourth step, 5mL of ammonia water is placed in the reactor, and the MoS 2 The nanosheets are placed above the ammonia water without contact with the ammonia water, and the reaction kettl...

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

A Heteroatom Nitrogen Surface Modified MoS 2 The preparation and application of nanometer materials belong to the technical field of electrocatalytic material synthesis. The prepared catalyst has excellent electrocatalytic oxygen evolution performance. The preparation process includes the following steps: (1) carbon cloth (3*3cm) is ultrasonicated in acetone, ethanol, and water for 10 minutes; (2) ammonium molybdate and thiourea are mixed in water in proportion and reacted with clean carbon cloth React at high temperature in the kettle. After cooling down to room temperature, rinse the carbon cloth with ethanol and water in turn, and dry it; (3) the MoS obtained in step (2) 2 Nanosheets and ammonia water are placed in a reactor at high temperature for a certain period of time to obtain heteroatom nitrogen-modified MoS 2 nanomaterials. The catalyst obtained in the invention exhibits excellent electrocatalytic performance, has a simple preparation process and low cost, and is suitable for large-scale production.

Description

technical field [0001] The technical field of electrocatalytic material synthesis, specifically related to a heteroatom nitrogen surface modified MoS 2 Preparation and application of nanomaterials. Background technique [0002] As an alternative to traditional fossil fuels, hydrogen energy has attracted widespread attention due to its high energy density, zero pollution emissions, and abundant reserves. Water electrolysis offers an ideal method for the production of renewable pure hydrogen without by-products. Electrolyzed water consists of two half-reactions, hydrogen evolution at the cathode and oxygen evolution at the anode. Among them, the anode oxygen evolution reaction is a four-electron-proton coupling reaction, which requires higher energy (higher overpotential), so that the oxygen evolution overpotential is much higher than the theoretical decomposition voltage of water (1.23V). To reduce the overpotential and facilitate the reaction kinetics during water electro...

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): B01J27/24H01M4/90H01M4/88C25B1/02C25B11/04C25B11/075
CPCB01J27/24H01M4/9091H01M4/8825C25B1/02C25B11/075B01J35/33Y02E60/50
Inventor 吴则星宋敏刘希恩
Owner QINGDAO UNIV OF SCI & TECH
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