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Modified activated carbon/ferroferric oxide composite material and preparation method and application thereof

A technology of ferric tetroxide and composite materials, which is applied in the field of modified activated carbon/iron tetroxide composite materials and their preparation, and can solve problems such as the inability to use a liquid phase environment.

Active Publication Date: 2020-12-15
自然资源部天津海水淡化与综合利用研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, stable ferroferric oxide magnetic particles are not formed in the modified activated carbon prepared by the method, and the modified activated carbon can only be applied to the treatment of organic waste gas, and cannot be used in a liquid phase environment.

Method used

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  • Modified activated carbon/ferroferric oxide composite material and preparation method and application thereof
  • Modified activated carbon/ferroferric oxide composite material and preparation method and application thereof
  • Modified activated carbon/ferroferric oxide composite material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0073] This embodiment provides a kind of preparation method of modified activated carbon / ferric oxide composite material, and described preparation method comprises the following steps:

[0074] (1) Utilize the 0.1g / mL citric acid solution of deionized water preparation 50mL, utilize described citric acid solution again to 15g commercial gac at room temperature in the shaker with the rotating speed oscillation of 180rpm, carry out the first excessive impregnation treatment 14h, After the activated carbon is adsorbed and saturated, perform vacuum filtration, wash the obtained solid to neutrality, and dry it at 90°C until the activated carbon is completely dehydrated, and the obtained solid is pickled activated carbon;

[0075] (2) Prepare 50mL of 0.1g / mL Fe(NO 3 ) 2 solution, and then use the Fe(NO 3 ) 2 Solution to step (1) obtained pickling activated carbon in the shaker at room temperature with a rotating speed of 180rpm vibration, carry out the second excessive impregna...

Embodiment 2

[0079] This embodiment provides a kind of preparation method of modified activated carbon / ferric oxide composite material, and described preparation method comprises the following steps:

[0080] (1) Utilize 50mL of 0.1g / mL oxalic acid solution prepared with deionized water, then use the oxalic acid solution to vibrate 15g of commercial activated carbon in a shaker at room temperature at a speed of 180rpm, carry out the first excessive impregnation treatment for 9h, and treat the activated carbon After the adsorption is saturated, carry out centrifugal dehydration, and wash the obtained solid to neutrality, and dry it at 60°C until the activated carbon is completely dehydrated, and the obtained solid is acid-soaked activated carbon;

[0081] (2) Prepare 50mL of 0.1g / mL FeCl with deionized water 2 solution, reusing the FeCl 2 The solution is to shake the acid-soaked activated carbon obtained in step (1) at room temperature in a shaker with a rotating speed of 180rpm, carry out...

Embodiment 3

[0086] This embodiment provides a kind of preparation method of modified activated carbon / ferric oxide composite material, and described preparation method comprises the following steps:

[0087] (1) Utilize deionized water to prepare 50mL of 0.1g / mL malic acid solution, then utilize said malic acid solution to vibrate 15g of commercial activated carbon in a shaker at room temperature at a speed of 180rpm, and carry out the first excessive impregnation treatment for 19h, After the activated carbon is adsorbed and saturated, carry out centrifugal dehydration, wash the obtained solid to neutrality, and dry it at 120°C until the activated carbon is completely dehydrated, and the obtained solid is pickled activated carbon;

[0088] (2) Prepare 50mL of 0.1g / mL Fe with deionized water 2 (SO 4 ) 3 solution, and reuse the Fe 2 (SO 4 ) 3 Solution to the acid-soaked activated carbon obtained in step (1) at room temperature in a shaker with a rotating speed of 180rpm, carry out the ...

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Abstract

The invention provides a modified activated carbon / ferroferric oxide composite material and a preparation method and application thereof. The preparation method comprises the following steps: 1, usingan organic acid solution for conducting first dipping treatment on activated carbon, and conducting solid-liquid separation after the activated carbon is adsorbed to be saturated, wherein the obtained solid is pickled activated carbon; (2) carrying out second dipping treatment on the pickled activated carbon obtained in the step (1) by using an iron salt solution, and carrying out solid-liquid separation after the pickled activated carbon is adsorbed to be saturated, wherein the obtained solid is iron-loaded pickled activated carbon; (3) roasting the iron-loaded pickling activated carbon obtained in the step (2) to obtain a modified activated carbon / ferroferric oxide composite material; wherein iron ions in the ferric salt solution in the step (2) comprise Fe < 2 + > and / or Fe < 3 + >. The modified activated carbon / ferroferric oxide composite material can be used as an adsorption material, a superparamagnetic material, a Fenton-like catalyst or a supercapacitor electrode material.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, in particular to a modified activated carbon composite material, in particular to a modified activated carbon / ferric oxide composite material and its preparation method and application. Background technique [0002] In recent years, the preparation and application of activated carbon / Fe3O4 composites have received more and more attention. Loading ferric oxide particles on the surface of activated carbon can effectively avoid particle agglomeration. [0003] The conventional preparation method of activated carbon / iron tetroxide composites based on finished activated carbon is the impregnation-roasting method. A typical method is to impregnate activated carbon with ferrous salt or ferric salt solution, then dry the solvent directly or separate solid and liquid by suction filtration, and then roast the mixture of ferrous salt or ferric salt and activated carbon in an inert ga...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/32H01G11/24H01G11/46H01G11/26H01F1/00H01F41/00H01F41/02B01J20/20B01J20/28B01J20/30C02F1/28C02F1/72C02F101/30C01B32/354C01B32/372B01J23/745
CPCH01G11/86H01G11/32H01G11/24H01G11/46H01G11/26H01F1/0018H01F41/005H01F41/02B01J20/20B01J20/06B01J20/28009C02F1/288C02F1/725C02F1/722C01B32/354C01B32/372B01J23/745C02F2101/30C02F2305/026C01P2002/72Y02E60/13
Inventor 马宇辉曹军瑞谢宝龙陈希赵瑾王勋亮
Owner 自然资源部天津海水淡化与综合利用研究所
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