Europium doped cobalt ferrite composite and preparation method thereof

A technology of cobalt ferrite and composite materials, applied in iron compounds, chemical instruments and methods, inorganic chemistry, etc., to achieve the effects of less pollution, easy reaction, and easy industrialization

Inactive Publication Date: 2017-11-24
ANHUI UNIV OF SCI & TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently about Eu 2+ The effect of doping on the structure and magnetism of cobalt ferrite and its mechanism are rarely reported, and differen

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
  • Europium doped cobalt ferrite composite and preparation method thereof
  • Europium doped cobalt ferrite composite and preparation method thereof
  • Europium doped cobalt ferrite composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A europium-doped cobalt ferrite (Co 0.8 Eu 0.2 Fe 2 o 4 Namely x=0.8) the preparation method of composite material, method step is as follows:

[0030] S1: Add 1.6mmol Co(NO 3 ) 3 ·6H 2 O, 0.4mmol Eu(NO 3 ) 3 ·6H 2 O and 4mmol Fe(NO 3 ) 3 9H 2 O, and fully stirred evenly, adding NaOH solution with a concentration of 5mol / L dropwise, adjusting the pH of the solution to 11, and continuously stirring for 20min.

[0031] S2: Move the solution into a reaction kettle, and react at a constant temperature of 180°C for 10 hours; after the reaction is completed, cool the solution to room temperature, and repeatedly centrifuge and wash the precipitate with deionized water and ethanol until the solution becomes neutral.

[0032] S3: Finally, dry in a vacuum oven at 60°C for 12 hours to obtain Co with x=0.8 0.8 Eu 0.2 Fe 2 o 4 Europium-doped cobalt ferrite composites.

Embodiment 2

[0034] A europium-doped cobalt ferrite (Co 0.85 Eu 0.15 Fe 2 o 4 Namely x=0.85) the preparation method of composite material, method step is as follows:

[0035] S1: Add 1.7mmol Co(NO 3 ) 3 ·6H 2 O, 0.3mmol Eu(NO 3 ) 3 ·6H 2 O and 4mmol Fe(NO 3 ) 3 9H 2 O, and fully stirred evenly, adding NaOH solution with a concentration of 5mol / L dropwise, adjusting the pH of the solution to 11.5, and continuously stirring for 20min.

[0036] S2: Move the solution into a reaction kettle, and react at a constant temperature of 180°C for 10 hours; after the reaction is completed, cool the solution to room temperature, and repeatedly centrifuge and wash the precipitate with deionized water and ethanol until the solution becomes neutral.

[0037] S3: Finally, dry in a vacuum oven at 60°C for 12 hours to obtain Co with x=0.85 0.85 Eu 0.15 Fe 2 o 4 Europium-doped cobalt ferrite composites.

Embodiment 3

[0039] A europium-doped cobalt ferrite (Co 0.9 Eu 0.1 Fe 2 o 4 Namely x=0.9) the preparation method of composite material, method step is as follows:

[0040] S1: Add 1.8mmol Co(NO 3 ) 3 ·6H 2 O, 0.2mmol Eu(NO 3 ) 3 ·6H 2 O and 4mmol Fe(NO 3 ) 3 9H 2 O, and fully stirred evenly, adding NaOH solution with a concentration of 5mol / L dropwise, adjusting the pH of the solution to 11.8, and continuously stirring for 20min.

[0041]S2: Move the solution into a reaction kettle, and react at a constant temperature of 180°C for 10 hours; after the reaction is completed, cool the solution to room temperature, and repeatedly centrifuge and wash the precipitate with deionized water and ethanol until the solution becomes neutral.

[0042] S3: Finally, dry in a vacuum oven at 60°C for 12 hours to obtain Co with x=0.9 0.9 Eu 0.1 Fe 2 o 4 Europium-doped cobalt ferrite composites.

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
Login to view more

Abstract

The invention discloses a europium-doped cobalt ferrite composite material. Cobalt nitrate hexahydrate, europium nitrate hexahydrate and ferric nitrate nonahydrate are dissolved in deionized water according to different substance ratios, and the pH is adjusted to alkali by NaOH A simple one-step hydrothermal method was used to prepare rod-shaped nano-europium-doped cobalt ferrite materials. This method has a simple technological process and is easy to operate and control.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a europium-doped cobalt ferrite composite material and a preparation method thereof. Background technique [0002] Spinel-type cobalt ferrite is a ferrimagnetic material with unique physical, chemical and magnetic properties. Its high high-frequency magnetic permeability, magnetic crystal anisotropy, and coercive force and resistivity dozens of times higher than magnetic alloys make it widely used in communication broadcasting, mutual inductance devices, magnetic core bearings, microwave absorption etc. For the existing cobalt ferrite production process, it is easy to operate and easy to control, unlike metal magnetic materials that need to be rolled into thin sheets or made into fine powder media before they can be applied. In recent years, magnetic nanomaterials have received widespread attention, and the development of different types of nano-cobalt ferrites has ...

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): C01G49/00
CPCC01G49/009C01P2002/20C01P2002/72C01P2002/80C01P2004/04C01P2004/61C01P2006/40C01P2006/42
Inventor 邢宏龙申子瑶刘叶贾涵枭王欢
Owner ANHUI UNIV OF SCI & TECH
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