Preparation method of manganese-zinc ferrite magnetic nano microsphere

A technology of manganese zinc ferrite and magnetic nanometers, which is applied in the field of preparation of magnetic nanospheres, can solve the problems of many process steps, uncontrollable shape, impure crystal phase, etc., and achieve simple preparation process and simple production equipment requirements , crystal phase pure effect

Inactive Publication Date: 2008-11-19
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the present preparation of Mn 1-x Zn x Fe 2 o 4 The method mainly has the following defects, the process steps are more, the cost is higher, and the prepared Mn 1-x Zn x Fe 2 o 4 The crystal phase is impure, the shape

Method used

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  • Preparation method of manganese-zinc ferrite magnetic nano microsphere
  • Preparation method of manganese-zinc ferrite magnetic nano microsphere
  • Preparation method of manganese-zinc ferrite magnetic nano microsphere

Examples

Experimental program
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Example Embodiment

[0027] Example 1

[0028]Weigh 1.351g ferric chloride, 0.1487g zinc nitrate hexahydrate, 0.338g manganese sulfate monohydrate, add to a three-neck flask, then add 50ml ethylene glycol, 3.6g anhydrous sodium acetate, 1ml polyethylene glycol, 0.01g The polyvinylpyrrolidone was mechanically stirred at a rotation speed of 350 revolutions / min for 30 minutes. After it was completely dissolved, the above solution was poured into the reaction kettle, and the temperature was raised to 200° C. and reacted for 12 hours. After the reaction is over, the product is collected with a magnet and washed with deionized water, and then the product is dried at 60° C. for 15 hours to obtain magnetic nanospheres.

[0029] figure 1 According to the X-ray diffraction pattern of the magnetic nanospheres synthesized in this example, it can be seen that the diffraction peak is consistent with that of the cubic phase manganese-zinc ferrite, and no diffraction of other oxides belonging to manganese, zinc, an...

Example Embodiment

[0030] Example 2

[0031] Weigh out 1.351g ferric chloride, 0.2975g zinc nitrate hexahydrate, 0.2535g manganese sulfate monohydrate, add 55ml ethylene glycol, 3.8g anhydrous sodium acetate, 1.1ml polyethylene glycol, 0.012 g polyvinylpyrrolidone, mechanically stirred for 20 min at a rotation speed of 450 revolutions / min, and after it is completely dissolved, pour the above-mentioned solution into the reaction kettle, raise the temperature to 210° C., and react for 11 h. After the reaction is over, the product is collected with a magnet, washed with deionized water, and then dried at 50° C. for 24 hours to obtain magnetic nanospheres.

[0032] The X-ray test results show that the diffraction peaks are consistent with those of the cubic phase manganese-zinc ferrite, and no diffraction peaks of other oxides belonging to manganese, zinc, and iron are found, indicating that there is no impurity phase. Analysis and comparison by XRD data analysis software (JADE5.0) showed that the magne...

Example Embodiment

[0033] Example 3

[0034] Weigh 1.351g ferric chloride, 0.4462g zinc nitrate hexahydrate, 0.169g manganese sulfate monohydrate, add to a three-neck flask, then add 45ml ethylene glycol, 4g anhydrous sodium acetate, 0.8ml polyethylene glycol, 0.01 g polyvinylpyrrolidone, mechanically stirred at a rotation speed of 450 revolutions / min for 20 minutes, and after it is completely dissolved, pour the above solution into the reaction kettle, raise the temperature to 190°C, and react for 10 hours. After the reaction is over, the product is collected with a magnet and washed with deionized water, and then the product is dried at 55° C. for 20 hours to obtain magnetic nanospheres.

[0035] The X-ray test results show that the diffraction peaks are consistent with those of the cubic phase manganese-zinc ferrite, and no diffraction peaks of other oxides belonging to manganese, zinc, and iron are found, indicating that there is no impurity phase. Analyzed and compared by XRD data analysis soft...

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Abstract

The invention relates to a method for preparing a Mn-Zn ferrite magnetic nano-sphere, which comprises the following steps: (1) weighting soluble iron salt, zinc salt and manganese salt according to the stoichiometric proportion at the normal temperature, and adding into 40-60ml of solvent with 98-99.5wt% of glycol; (2) adding 0.4-1.2ml of polyethylene glycol and 0.01-0.02g of polyvinyl pyrrolidon dispersant, adding 3.5-5g of alkaline additive, and mechanically stirring for 20-40min; (3) putting the soluble mixture into a reaction kettle, heating to 180-220DEG C, reacting for 8-12h, cooling to the room temperature, collecting the reaction product by a magnet, washing the product by deionized water, and drying to obtain the Mn-Zn ferrite Mn1-xZnxFe2O4 magnetic nano-sphere, wherein x ranges from 0.2 to 0.8. The invention has simple preparation process and easy industrialized production, and the obtained magnetic nano-sphere has pure crystal phase, good dispersibility and high magnetization.

Description

technical field [0001] The invention belongs to the field of preparation of magnetic nano microspheres, in particular to a preparation method of manganese zinc ferrite magnetic nano microspheres. Background technique [0002] Ferrite nanoparticles have broad application prospects in high-tech fields because of their physical effects such as surface effect, small size effect, quantum size effect, and macroscopic quantum tunneling effect, as well as excellent magnetic properties. [0003] MnZn ferrite is an important magnetic material. On the one hand, it has the characteristics of high magnetic permeability, high saturation magnetization, and low loss in medium and high frequencies, so it is widely used in filters, broadband transformers, common mode choke coils, and signals of various communication and transmission equipment. transmission system, as well as lighting transformers, electronic ballasts, etc. in daily life and buildings; Materials and drug targeting materials ...

Claims

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Application Information

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IPC IPC(8): B22F9/16
Inventor 李耀刚张祺王宏志朱美芳张青红袁素珺
Owner DONGHUA UNIV
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