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A kind of preparation method of magnetic ferrite nanoparticles

A technology of magnetic nanoparticles and nanoparticles, applied in the direction of magnetic properties of inorganic materials, iron oxide/iron hydroxide, etc.

Inactive Publication Date: 2011-12-21
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the magnetic properties of ferrite depend on the particle size and crystallization degree. When the particle size is not greater than 10nm, spinel ferrite will exhibit superparamagnetic properties. Existing equipment and technology cannot meet the requirements for such small Therefore, the preparation of materials with moderate size and satisfactory magnetic properties has become a hot spot for researchers.

Method used

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  • A kind of preparation method of magnetic ferrite nanoparticles
  • A kind of preparation method of magnetic ferrite nanoparticles
  • A kind of preparation method of magnetic ferrite nanoparticles

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Embodiment

[0019] 1. Add 0.54g FeCl 3 and 0.245g Mn(Ac) 2 Add it to 30ml of ethylene glycol and stir for 30min, then transfer the solution to the inner lining of the reactor and seal it, then place it in an oven at 200°C for 12 hours, cool to room temperature after the reaction, and use distilled water and Wash with ethanol and dry. attached figure 1 a is the XRD data of the obtained sample; figure 2 , 4 are the scanning and transmission images of the obtained samples respectively; attached Figure 6 b is the room temperature hysteresis loop of the obtained product.

[0020] 2. Add 0.54g FeCl 3 , 0.245g Mn(Ac) 2 and 0.85g NaAc were added to 30ml of ethylene glycol and stirred for 30min, then the solution was transferred to the lining of the reaction kettle and sealed, then placed in an oven at 200°C for 12 hours, and cooled to room temperature after the reaction, the obtained The precipitate was washed with distilled water and ethanol and dried. attached image 3 , 5 are the sc...

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Abstract

The invention belongs to the technical field of magnetic nanomaterial preparation, and relates to the successful preparation of nanoparticles with superparamagnetic properties. The product has the characteristics of high crystallinity, uniform particles, strong magnetic response, and good photocatalytic activity to methylene blue. The raw materials are cheap and easy to obtain, the synthesis process is simple, and it is suitable for large-scale commercial production. These magnetic nanoparticles and their composite materials are widely used in biomedicine (protein adsorption, DNA separation, disease diagnosis and treatment, drug targeted delivery, nuclear magnetic resonance imaging (MRI)) chemical catalysis and coating materials, absorbing materials, electrode materials, There are a wide range of applications in many fields such as electrocatalysis and sewage treatment.

Description

Technical field: [0001] The invention belongs to the technical field of magnetic material preparation, and relates to a method for preparing magnetic nanomaterials using ferric chloride and manganese acetate as raw materials. The magnetic nanomaterials can be used in biomedicine, industrial catalysis, coatings, wave-absorbing materials, and electrocatalysis and preparation of electrode materials. Background technique [0002] Nanomaterials and nanostructures are the most dynamic research objects in the field of new materials research today, which have a very important impact on future economic and social development, and are also the most dynamic disciplines with rich research connotations in nanotechnology. Nanoparticles are atoms or atomic groups composed of a limited number of atoms or molecules that maintain the chemical properties of the original substance and are in a metastable state. When the dimension of the substance decreases, the relative proportion of the numbe...

Claims

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Application Information

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IPC IPC(8): C01G49/02H01F1/34
Inventor 郭培志张国梁
Owner QINGDAO UNIV
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