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Preparation method of carbon nanomaterial loaded nanometer ferrite hollow sphere

A nano-carbon material and nano-ferrite technology, which is applied in the preparation of nano-carbon material-loaded ferrite nano-hollow spheres, and in the field of nano-carbon material-loaded nano-ferrite hollow spheres, can solve the problem of destroying hollow nanostructures and template material particles. Large diameter, complex post-processing and other problems, to achieve the effect of uniform shape, low cost and simple equipment

Active Publication Date: 2016-10-26
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology

With the development and wide application of hollow nanomaterials, researchers have invented a variety of preparation methods, among which the template-mediated method is the most commonly used preparation method for hollow nanomaterials. In this method, the material to be prepared is firstly covered on the surface of the template particles. , and then use a certain method to remove the template to leave a hollow nanostructure, and many hollow nanoparticles can be prepared by this method; the traditional template-mediated method usually uses silicon spheres and granular polymers as templates, and the preparation process is simple, but the template material The particle size is large, and the post-treatment is complicated, which is easy to introduce impurities and destroy the hollow nanostructure

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  • Preparation method of carbon nanomaterial loaded nanometer ferrite hollow sphere
  • Preparation method of carbon nanomaterial loaded nanometer ferrite hollow sphere

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Embodiment 1

[0030] In this embodiment, at room temperature, 30 mg of Ag-MnFe 2 o 4 Core-shell nanoparticles were dispersed in 30mL of toluene, and 150mg of Vulcan XC-72 carbon black was added to it. After stirring for 24h, 80mL of methanol was added, centrifuged at 8000rpm for 15min, and the supernatant was removed to obtain carbon black-loaded Ag-MnFe 2 o 4 Core-shell nanoparticles, then add 100mL5mol / L saturated sodium chloride solution, stir for 48h and centrifuge at 8000rpm for 10min to obtain carbon black loaded MnFe 2 o 4 Nanohollow spheres, Ag-MnFe loaded on carbon black 2 o 4 Core-shell nanoparticles and carbon black supported MnFe2 o 4 Transmission electron microscope imaging of hollow nanospheres figure 1 shown.

Embodiment 2

[0032] In this embodiment, at room temperature, 30 mg of Ag-CoFe 2 o 4 Core-shell nanoparticles were dispersed in 30 mL of toluene, 150 mg of Vulcan XC-72 carbon black was added to it, stirred for 24 hours, 100 mL of methanol was added, centrifuged at 8000 rpm for 15 minutes, and the supernatant was removed to obtain carbon black-loaded Ag-CoFe 2 o 4 Core-shell nanoparticles, then add 5mol / L sodium thiosulfate solution, stir for 48h and centrifuge at 8000rpm for 10min to obtain carbon black-loaded CoFe 2 o 4 Nano hollow spheres, Ag-CoFe loaded on carbon black 2 o 4 Core-shell nanoparticles and carbon black supported CoFe 2 o 4 Transmission electron microscope imaging of hollow nanospheres figure 2 shown.

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Abstract

The invention belongs to the technical field of preparation of nanomaterials, and relates to a preparation method of a carbon nanomaterial loaded nanometer ferrite hollow sphere. Carbon nanomaterial loaded core-shell structure silver-ferrite nanoparticles are dispersed in 5-6 mol / L sodium thiosulfate solution or saturated sodium chloride solution; and under a room-temperature stirring effect, core silver particles in a core-shell structure are gradually dissolved out to synthesize a carbon nanomaterial loaded transition-state metal M nanometer ferrite hollow sphere. The preparation method is simple in process and easy to control reaction conditions; and the prepared ferrite nanometer hollow sphere is uniform in morphology, low in density, high in electrochemical catalysis activity, excellent in dispersibility, simple in needed equipment, low in cost and easy to produce on a large scale.

Description

Technical field: [0001] The invention belongs to the technical field of nano-material preparation, and relates to a method for preparing nano-carbon material-loaded ferrite nano-hollow spheres, in particular to a preparation method for leaching inner-core silver from nano-carbon material-loaded silver-ferrite core-shell nanoparticles The invention discloses a process method for nano-carbon material loaded nano-ferrite hollow spheres. Background technique: [0002] The application range of ferrite nanomaterials is very wide, involving all aspects of national economy and social life, involving the country's national defense strength and national competitiveness, among which the transition state metal M (iron, manganese, cobalt, nickel, zinc) ferrite Bulk nanomaterials have attracted much attention due to their excellent electrical and magnetic properties and great application potential. However, whether it is in the application of microwave-absorbing stealth technology, biome...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00
CPCB82Y40/00B22F9/24B22F1/0553B22F1/07B22F1/054
Inventor 董立峰陈英杰刘士奔
Owner QINGDAO UNIV OF SCI & TECH
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