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

Preparation and application of Fe3O4@C@MoS2 composite material with core-shell structure

A technology of core-shell structure and composite materials, applied in other chemical processes, electrical components, magnetic field/electric field shielding, etc., can solve problems such as interference of electronic equipment, instruments and communication signals, and achieve excellent microwave absorption performance

Active Publication Date: 2019-05-31
ANHUI UNIV OF SCI & TECH
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, electromagnetic radiation can cause serious interference of electronic equipment, instruments and communication signals

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 and application of Fe3O4@C@MoS2 composite material with core-shell structure
  • Preparation and application of Fe3O4@C@MoS2 composite material with core-shell structure
  • Preparation and application of Fe3O4@C@MoS2 composite material with core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] S1: Fe 2 o 3 Particle preparation: FeCl 3 After adding NaOH and NaOH into water and mixing evenly, the mixed solution is put into a polytetrafluoroethylene stainless steel autoclave to react to obtain a uniform cubic Fe 2 o 3 Particles, of which: FeCl 3 5 parts, 1 part of NaOH, 500 parts of water, the reaction condition is constant temperature reaction at 140°C for 15 hours;

[0025] S2: Fe 2 o 3 Preparation of @PDA complex: the Fe prepared in S1 2 o 3 The particles and dopamine hydrochloride were added to tris buffer solution, stirred and reacted with a magnetic stirrer at room temperature, and then the reaction product was washed, and the core-shell structure Fe was collected by centrifugation. 2 o 3 @PDA complex where Fe 2 o 3 The mass ratio of particles, dopamine hydrochloride and Tris buffer (pH=8.5) is 1:2.4:2.4, the stirring speed of the magnetic stirrer is 500r / min, the stirring time is 12h, and the washing conditions are Wash 3 times with water and ...

Embodiment 2

[0029] S1: Fe 2 o 3 Particle preparation: FeCl 3 After adding NaOH and NaOH into water and mixing evenly, the mixed solution is put into a polytetrafluoroethylene stainless steel autoclave to react to obtain a uniform cubic Fe 2 o 3 Particles, of which: FeCl 3 2 parts, 0.5 parts of NaOH, 400 parts of water, the reaction conditions are constant temperature reaction at 120°C for 12 hours;

[0030] S2: Fe 2 o 3 Preparation of @PDA complex: the Fe prepared in S1 2 o 3 The particles and dopamine hydrochloride were added to tris buffer solution, stirred and reacted with a magnetic stirrer at room temperature, and then the reaction product was washed, and the core-shell structure Fe was collected by centrifugation. 2 o 3 @PDA complex where Fe 2 o 3The mass ratio of particles, dopamine hydrochloride and tris buffer (pH=8.5) is 1:2:2, the stirring speed of the magnetic stirrer is 400r / min, the stirring time is 10h, and the washing conditions are Wash twice with water and et...

Embodiment 3

[0034] S1: Fe 2 o 3 Particle preparation: FeCl 3 After adding NaOH and NaOH into water and mixing evenly, the mixed solution is put into a polytetrafluoroethylene stainless steel autoclave to react to obtain a uniform cubic Fe 2 o 3 Particles, of which: FeCl 3 8 parts, 1.5 parts of NaOH, 600 parts of water, and the reaction conditions are constant temperature reaction at 160°C for 18 hours;

[0035] S2: Fe 2 o 3 Preparation of @PDA complex: the Fe prepared in S1 2 o 3 The particles and dopamine hydrochloride were added to tris buffer solution, stirred and reacted with a magnetic stirrer at room temperature, and then the reaction product was washed, and the core-shell structure Fe was collected by centrifugation. 2 o 3 @PDA complex where Fe 2 o 3 The mass ratio of particles, dopamine hydrochloride and tris buffer (pH=8.5) is 1:3:3, the stirring speed of the magnetic stirrer is 600r / min, the stirring time is 14h, and the washing conditions are Wash 4 times with water...

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
thicknessaaaaaaaaaa
absorption bandwidthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation and an application of an Fe3O4@C@MoS2 composite material with a core-shell structure. The preparation method includes the following steps: S1. adding FeCl3 and NaOH into water, uniformly mixing, loading the mixed solution into a polytetrafluoroethylene stainless steel autoclave, and reacting to obtain uniform cubic Fe2O3 particles; S2, adding the Fe2O3 particles prepared in S1 and dopamine hydrochloride into a trimethylolaminomethane buffer solution, stirring and reacting at room temperature with a magnetic stirrer, then washing the reaction product, and collecting an Fe2O3@PDA composite with a core-shell structure through a centrifugal method; S3. adding the Fe2O3@PDA prepared in S2, ammonium molybdate tetrahydrate and thiourea into water in sequenceand stirring uniformly, washing the product after the reaction is finished, and collecting Fe2O3@PDA@MoS2 composite through the centrifugal method; and S4. calcining the Fe2O3@PDA@MoS2 composite underthe flow of hydrogen and argon to finally obtain the Fe3O4@C@MoS2 composite. The Fe3O4@C@MoS2 composite material prepared by the method has excellent microwave absorption performance.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to core-shell structure Fe 3 o 4 @C@MoS 2 Preparation of composite materials and their applications. Background technique [0002] With the development of modern science and technology, electronic and electrical equipment has made the development of social production highly efficient and brought great convenience to daily life. At the same time, electromagnetic radiation and electromagnetic interference generated during the working process of electronic and electrical equipment affect human production and life, and the living space of human beings is deteriorating day by day. In addition, electromagnetic radiation can cause serious interference of electronic equipment, instruments and communication signals. The development of electromagnetic wave absorbing materials with excellent performance is an effective solution to this problem. Contents of the inve...

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): C09K3/00H05K9/00
Inventor 高圣涛张元春朱群龙谢雨婷李毅
Owner ANHUI 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