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Method for preparing graphene/ferroferric oxide composite microspheres

A technology of ferroferric oxide and graphene, which is applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as low production efficiency, complicated operation process, and long time, and achieve Easy to operate, wide application prospects, simple process effect

Inactive Publication Date: 2015-01-07
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complicated operation process, it takes a long time and the production efficiency is low.

Method used

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  • Method for preparing graphene/ferroferric oxide composite microspheres
  • Method for preparing graphene/ferroferric oxide composite microspheres
  • Method for preparing graphene/ferroferric oxide composite microspheres

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A Graphene / Fe 3 o 4 A preparation method for composite microspheres, comprising the steps of:

[0023] (1) Weigh 0.005 mol ferric nitrate and 0.005 mol citric acid in sequence, add them to 100 mL deionized water, and stir to obtain a clear solution.

[0024] (2) Weigh 0.3 g of graphene oxide, add it to the solution obtained in (1), and sonicate until it is uniformly dispersed, and the concentration of graphene oxide in the solution is 3 g / L.

[0025] (3) Add the mixed liquid obtained in (2) to the atomization device to form mist droplets, and bring it into a tube furnace with a furnace temperature of 800 °C with nitrogen gas, and collect black Graphene / Fe after reaction 3 o 4 Composite microspheres.

[0026] figure 1 In, the X-ray diffraction pattern of the obtained sample is consistent with that of Fe 3 o 4 The peaks on the standard PDF card are consistent. It shows that what is obtained is Graphene / Fe 3 o 4 Composite microspheres. Depend on figure 2 It ca...

Embodiment 2

[0028] A Graphene / Fe 3 o 4 A preparation method for composite microspheres, comprising the steps of:

[0029] (1) Weigh 0.002 mol ferric nitrate and 0.003 mol citric acid in sequence, add them to 200 mL deionized water, and stir to obtain a clear solution.

[0030] (2) Measure 0.2 g of graphene oxide, add it to the solution obtained in (1), and sonicate until it is uniformly dispersed, and the concentration of graphene oxide in the solution is 1 g / L.

[0031] (3) Add the mixed liquid obtained in (2) to the atomization device to form mist droplets, and bring it into a tube furnace with a furnace temperature of 600 °C with argon gas, and collect black Graphene / Fe after reaction 3 o 4 Composite microspheres.

Embodiment 3

[0033] A Graphene / Fe 3 o 4 A preparation method for composite microspheres, comprising the steps of:

[0034] (1) Weigh 0.01 mol ferric nitrate and 0.03 mol urea in sequence, add them to 100 mL deionized water, and stir to obtain a clear solution.

[0035] (2) Measure 0.6 g of graphene oxide, add it to the solution obtained in (1), and sonicate until it is uniformly dispersed, and the concentration of graphene oxide in the solution is 6 g / L.

[0036] (3) Add the mixed liquid obtained in (2) to the atomization device to form mist droplets, and bring it into a tube furnace with a furnace temperature of 900 °C with argon gas, and collect black Graphene / Fe after reaction 3 o 4 Composite microspheres.

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Abstract

The invention relates to a method for preparing graphene / ferroferric oxide (Fe3O4) composite microspheres. The method is low in temperature, simple in process, easy to operate and capable of realizing continuous production. The microspheres produced by the method have spherical morphology, excellent absorption capability and magnetic performance. The graphene / Fe3O4 composite material has spherical morphology and excellent absorption function, and can be magnetically separated, and can be widely applied to the fields of sewage treatment and the like.

Description

technical field [0001] The invention relates to the field of inorganic synthesis of adsorbents, in particular to a method for preparing graphene / ferric oxide composite microspheres with a spherical shape. Background technique [0002] Graphene is a new type of carbon material with a two-dimensional sheet structure, which has good photoelectric properties and has been widely used in many fields. It can be used as a reinforcing phase to compound with other substances to prepare composite materials with more excellent performance. Due to its extremely high specific surface area, it also has excellent adsorption properties and can be used as an adsorbent to treat toxic molecules in sewage. Ferric oxide (Fe 3 o 4 ) has excellent magnetic properties, can be oriented under an external magnetic field, can be oriented under an external magnetic field, can be oriented and moved under an external magnetic field, has superparamagnetism within a certain particle size range, and can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
Inventor 张大凤蒲锡鹏高岩岩李红
Owner LIAOCHENG UNIV
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