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Preparation method of FeMnO3 hollow nanospheres

A technology of hollow nano and nano carbon spheres, which is applied in the field of preparation of new FeMnO3 hollow nano spheres, can solve the problems such as the synthesis method of special morphology materials that have not been reported in the literature, and achieve simple and controllable process, uniform product morphology, and improved ratio The effect of capacity

Inactive Publication Date: 2014-02-05
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] FeMnO 3 It is a brand-new iron-manganese oxide compound. So far, there has been no literature report on the synthesis method of this type of material with special morphology.

Method used

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  • Preparation method of FeMnO3 hollow nanospheres
  • Preparation method of FeMnO3 hollow nanospheres
  • Preparation method of FeMnO3 hollow nanospheres

Examples

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preparation example Construction

[0022] Preparation of carbon nanosphere template: 4g of glucose was dissolved in 42ml of distilled water, transferred into a polytetrafluoroethylene-lined autoclave, reacted at 180°C for 10h, centrifuged, washed, and dried to obtain carbon nanospheres.

[0023] The present invention FeMnO 3 The preparation method of hollow nanosphere comprises the following steps:

[0024] (1) Dissolve 0.5mmol of manganese acetate tetrahydrate and 0.5mmol of ferric chloride hexahydrate in 10ml of absolute ethanol;

[0025] (2) Add 0.5g nano carbon spheres to the mixed solution in step (1), and disperse evenly by ultrasonic;

[0026] (3) Add 5ml of ethanol solution containing 0.5ml of concentrated ammonia water dropwise to the suspension obtained in step (2), and stir to make it evenly mixed;

[0027] (4) After standing at room temperature for 3 hours, centrifuge, wash with water and absolute ethanol three times respectively, and dry the obtained solid at 60°C;

[0028] (5) Put the dried sam...

Embodiment 1

[0030] Step 1: At room temperature, weigh 0.5 mmol of manganese acetate tetrahydrate and 0.5 mmol of ferric chloride hexahydrate and completely dissolve them in 10 ml of absolute ethanol solution under magnetic stirring;

[0031] Step 2: Add 0.5g carbon nanospheres to the mixed solution in step 1, and disperse by ultrasonic;

[0032] Step 3, adding 5ml of ethanol solution containing 0.5ml of ammonia water to the suspension obtained in step 2 dropwise, stirring and mixing evenly;

[0033] Step 4: After standing at room temperature for 3 hours, centrifuge, wash with water and absolute ethanol three times respectively, and dry the obtained solid at 60°C;

[0034] Step 5: Put the dried sample into a muffle furnace, start from room temperature, raise the temperature to 400 °C at a rate of 1 °C / min and keep it for 5 hours, then cool down naturally, cool to room temperature, take it out and put it into a sample bag for testing.

Embodiment 2

[0036] Step 1: At room temperature, weigh 0.5 mmol of manganese acetate tetrahydrate and 0.5 mmol of ferric chloride hexahydrate and completely dissolve them in 10 ml of absolute ethanol solution under magnetic stirring;

[0037] Step 2: Add 0.5g of carbon nanospheres to the mixed solution in step 1, and disperse by ultrasonic;

[0038] Step 3, adding 5ml of ethanol solution containing 0.5ml of ammonia water to the suspension obtained in step 2 dropwise, stirring and mixing evenly;

[0039] Step 4: After standing at room temperature for 3 hours, centrifuge, wash with water and absolute ethanol three times respectively, and dry the obtained solid at 60°C;

[0040] Step 5: Put the dried sample into a muffle furnace, start from room temperature, raise the temperature to 500 °C at a rate of 1 °C / min and keep it for 5 hours, then cool down naturally, cool to room temperature, take it out and put it into a sample bag for testing.

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Abstract

The invention discloses a preparation method of FeMnO3 hollow nanospheres, and the preparation method comprises the following steps: (1) dissolving manganese(II) acetate tetrahydrate and iron(III) chloride hexahydrate in the molar ratio of 1:1 in absolute ethanol; (2) adding carbon nanospheres with the diameter of 100-500nm for ultrasonic dispersion; (3) with mixing, adding full dose of an ammonia aqueous solution to completely precipitate manganese ions and iron ions; (4), centrifuging and washing the precipitate, and then drying to obtain black powder; (5) calcining the black powder in the air or oxygen atmosphere at 400-800 DEG C to obtain the FeMnO3 hollow nanospheres. The new FeMnO3 hollow nanospheres can be used as an electrode material for a supercapacitor.

Description

technical field [0001] The present invention relates to a novel FeMnO 3 The invention discloses a method for preparing hollow nanospheres, which belongs to the technical field of preparation of inorganic functional materials. Background technique [0002] In recent years, iron-manganese oxides have been widely concerned by scientists and can be used in many scientific and technological fields, including magnetic memory, electrical devices, ferrofluids, catalysts, microwaves, and biomedicine. However, the current research on iron-manganese oxides Research is also limited to the study of MnFe 2 o 4 and MnFe 2 o 4 Composite structure with other metal oxides. About MnFe 2 o 4 The synthesis of MnFe was mostly prepared by solvothermal method, co-precipitation method and sol-gel method in the early stage. 2 o 4 Most are spherical or granular. [0003] Due to their special hollow structure, large specific surface area, small density and special mechanical properties, inorg...

Claims

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Application Information

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IPC IPC(8): B01J13/02C01G49/00B82Y40/00
Inventor 郭晓辉许伟伟李茂林张佶
Owner NORTHWEST UNIV
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