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

A preparation method of monodisperse micron-sized hexagonal iron oxide flakes

A technology of iron oxide sheet and micron scale, which is applied in the direction of iron oxide, iron oxide/iron hydroxide, etc., to achieve the effect of simple preparation steps, uniform size and shape, and smooth surface

Active Publication Date: 2021-03-19
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the preparation of micron-sized hexagonal iron oxide materials by the solvothermal method in the methanol-water mixed solution system, there is no such thing in the prior art

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
  • A preparation method of monodisperse micron-sized hexagonal iron oxide flakes
  • A preparation method of monodisperse micron-sized hexagonal iron oxide flakes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 0.5g of ferric chloride hexahydrate and add it into 38ml of methanol, stir under magnetic stirring until it is completely dissolved, then weigh 1g of polyvinylpyrrolidone and add it, and continue stirring until it is completely dissolved. Another 0.5g of sodium hydroxide was weighed and added into 15mL of water, and magnetically stirred until completely dissolved. The aqueous solution of sodium hydroxide was added dropwise into the methanol solution of ferric chloride hexahydrate prepared above under stirring. Then the above liquid was transferred to a polytetrafluoroethylene-lined reactor, reacted at 160° C. for 16 hours, and cooled naturally at room temperature. Pour the reaction product into a centrifuge tube, wash it with deionized water and methanol for 4 times, then put it in an oven at 55°C for 24 hours to dry, and then put it in a muffle furnace at 500°C for 2 hours to obtain micron-sized particles. Reddish-brown regular hexagonal iron oxide flakes.

Embodiment 2

[0023] Weigh 0.6g of ferric chloride hexahydrate and add it into 45ml of methanol, stir under magnetic stirring until it is completely dissolved, then weigh 0.8g of polyvinylpyrrolidone and add it, and continue stirring until it is completely dissolved. Another 0.6g of sodium hydroxide was weighed and added into 18mL of water, and magnetically stirred until completely dissolved. The aqueous solution of sodium hydroxide was added dropwise into the methanol solution of ferric chloride hexahydrate prepared above under stirring. Then the above liquid was transferred to a Teflon-lined reactor, reacted at 170° C. for 10 hours, and cooled naturally at room temperature. Pour the reaction product into a centrifuge tube, wash with deionized water and methanol for 5 times, then put it in an oven at 60°C for 12 hours to dry, and then put it in a muffle furnace at 480°C for 2 hours to obtain micron-sized particles. Reddish-brown regular hexagonal iron oxide flakes.

Embodiment 3

[0025] Weigh 0.5g of ferric chloride hexahydrate and add it into 52ml of methanol, stir under magnetic stirring until it is completely dissolved, then weigh 1g of polyvinylpyrrolidone and add it, and continue stirring until it is completely dissolved. Another 0.5g of sodium hydroxide was weighed and added into 15mL of water, and magnetically stirred until completely dissolved. The aqueous solution of sodium hydroxide was added dropwise into the methanol solution of ferric chloride hexahydrate prepared above under stirring. Then the above liquid was transferred to a polytetrafluoroethylene-lined reactor, reacted at 180° C. for 16 hours, and cooled naturally at room temperature. Pour the reaction product into a centrifuge tube, wash it with deionized water and methanol for 4 times, then put it in an oven at 55°C for 24 hours to dry, and then put it in a muffle furnace at 550°C for 2 hours to obtain micron-sized particles. Reddish-brown regular hexagonal iron oxide flakes.

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
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a monodisperse micrometer-scale hexagon iron oxide sheet. The preparation method comprises the following steps of step 1, preparing a reaction solution;step 2, treating by a solvent thermal method, so as to obtain a red purple primary product; step 3, heating in a muffle furnace, so as to obtain red brown iron oxide. The preparation method has the advantages that the methanol-water mixed solution system is innovatively adopted; polyvinylpyrrolidone is used as a surfactant to assist the control on the morphology and dispersion property of the product; ferric chloride hexahydrate is used as an iron source to perform solvent thermal reaction, so as to prepare the micrometer-scale hexagon iron oxide sheet. The prepared micrometer-scale hexagon iron oxide sheet has the advantages that the uniqueness is good, the size is uniform, the dispersion property is good, the surface is smooth, the preparation steps are simple, the large-scale industrialized production is realized, and the application prospect is good in the fields of electrode materials, catalysts, functional coatings, gas-sensitive materials and the like.

Description

technical field [0001] The invention relates to the field of synthesis of inorganic materials, in particular to a method for preparing monodisperse micron-sized hexagonal iron oxide flakes. Background technique [0002] Iron oxide is an important magnetic material, catalyst, polishing material, battery material, red pigment, colorant, functional coating, and gas-sensitive material. Widely used in medical, energy, telecommunications, instrumentation industry, paint, rubber, plastics, cosmetics, enamel, leather, magnetic alloys, catalytic industry and gas sensors and other fields. For example: in medicine, micron iron oxide suspensions doped with nanoparticles are used for medical magnetic resonance imaging; in electrochemistry, there are performance studies of LiFePO4 / C cathode materials based on micron iron oxides; A report on washing pickling waste gas with iron oxide powder suspension; in terms of catalysis, there is an application of ethylbenzene dehydrogenation catalyst...

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): C01G49/06
CPCC01G49/06C01P2004/03C01P2004/61
Inventor 李晓宇胡新芳邵明星刘爽荆象阳傅敏岳增武
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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