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Preparation method and application of nano-magnetic iron-based manganese oxide

A manganese oxide, nano-magnetic technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, alkali metal compounds, etc., can solve problems such as environmental pollution, achieve simple preparation method, simple process operation, source wide range of effects

Active Publication Date: 2020-05-08
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Globally, about 4×10 lead is used annually 6 tons, only 1 / 4 is recycled, and most of the rest are discharged into the ecological environment in different forms, causing serious pollution to the environment

Method used

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  • Preparation method and application of nano-magnetic iron-based manganese oxide
  • Preparation method and application of nano-magnetic iron-based manganese oxide
  • Preparation method and application of nano-magnetic iron-based manganese oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of magnetic iron-based manganese oxide nanomaterials:

[0042] (1) Dissolve 0.46 urea in a mixed solution of 6 mL of absolute ethanol and 0.5 mL of hydrochloric acid (12mol / L), and stir at room temperature until the urea is completely dissolved;

[0043] (2) Add 0.5964g of FeCl to the above solution 2 4H 2 O, stir for 15 minutes;

[0044] (3) Add 25mL of ethylene glycol after step (2), and continue stirring for 15 minutes;

[0045] (4) Pour the solution obtained in step (3) into an autoclave and react at a constant temperature of 170°C for 5 hours;

[0046] (5) Cool the solution after the reaction in step (4) with the furnace, centrifuge, wash, and dry at 80°C until the water is completely volatilized to obtain Fe 3 o 4 ;

[0047] (6) Dry the Fe obtained in step (5) 3 o 4 Soak in 0.05mol / L potassium permanganate solution for 0.5h, centrifuge, wash, and vacuum dry at 70°C until the water evaporates completely to obtain magnetic iron-manganese oxide na...

Embodiment 2

[0050] Preparation of magnetic iron-based manganese oxide nanomaterials:

[0051] (1) Dissolve 0.46 urea in a mixed solution of 6 mL of absolute ethanol and 0.5 mL of hydrochloric acid (12mol / L), and stir at room temperature until the urea is completely dissolved;

[0052] (2) Add 0.5964g of FeCl to the above solution 2 4H 2 O, stir for 15 minutes;

[0053] (3) Add 25mL of ethylene glycol after step (2), and continue stirring for 15 minutes;

[0054] (4) Pour the solution obtained in step (3) into an autoclave and react at a constant temperature of 170°C for 5 hours;

[0055] (5) Cool the solution after the reaction in step (4) with the furnace, centrifuge, wash, and dry at 80°C until the water is completely volatilized to obtain Fe 3 o 4 ;

[0056] (6) Dry the Fe obtained in step (5) 3 o 4 Soak in 0.1mol / L potassium permanganate solution for 0.5h, centrifuge, wash, and vacuum dry at 80°C until the water evaporates completely to obtain magnetic iron-manganese oxide nan...

Embodiment 3

[0059] Preparation of magnetic iron-based manganese oxide nanomaterials:

[0060] (1) Dissolve 0.46 urea in a mixed solution of 6 mL of absolute ethanol and 0.5 mL of hydrochloric acid (12mol / L), and stir at room temperature until the urea is completely dissolved;

[0061] (2) Add 0.5964g of FeCl to the above solution 2 4H 2 O, stir for 15 minutes;

[0062] (3) Add 25mL of ethylene glycol after step (2), and continue stirring for 15 minutes;

[0063] (4) Pour the solution obtained in step (3) into an autoclave and react at a constant temperature of 170°C for 5 hours;

[0064] (5) Cool the solution after the reaction in step (4) with the furnace, centrifuge, wash, and dry at 80°C until the water is completely volatilized to obtain Fe 3 o 4 ;

[0065] (6) Dry the Fe obtained in step (5) 3 o 4 Soak in 0.2mol / L potassium permanganate solution for 0.5h, centrifuge, wash, and vacuum dry at 70°C until the water evaporates completely to obtain magnetic iron-manganese oxide nan...

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Abstract

The invention discloses a preparation method and an application of nano magnetic Fe based-Mn oxides, and belongs to the fields of material science and environmental engineering. FeCl2.4H2O is dissolved in a urea, ethanol and ethanediol system, a mixture is put in a high-pressure reactor, reaction temperature and time are controlled, magnetic Fe3O4 is formed through one-step synthesis, then Fe3O4 is put in a potassium permanganate solution for soaking, and a magnetic Fe based-Mn oxide nanomaterial is obtained. The prepared nano magnetic Fe based-Mn oxides have good heavy metal ion adsorption capacity, Pb<2+> in Pb-Zn tailings can be removed in short time (1-5 min), and a sample is magnetic and easy to separate; Fe and Mn source raw materials are rich, cheap, green and environmentally friendly; one simple and efficient method is provided for treatment of heavy metal ions, the method has good economic benefits and environmental benefits, and large-scale production and application can be realized.

Description

technical field [0001] The invention belongs to the field of material science and environmental engineering, and in particular relates to a preparation method and application of nanometer magnetic iron-manganese oxide. Background technique [0002] Lead is one of the most toxic heavy metal elements in pollutants. It has strong biotoxicity and bioaccumulation, and it will have a great poisonous effect on animals, plants and humans. Lead has adverse effects on the morphology, production and photosynthesis of plants, reduces its photosynthesis and respiration, reduces seed activity, inhibits its growth and metabolism, and has a strong inhibitory effect on soil urease and invertase. Lead is extremely harmful to the human body and is mainly neurotoxic. After entering the human body through the food chain, skin, respiratory system and digestive system, lead accumulates in the liver, kidney, pancreas, arteries, bones and other major organs of the human body, causing serious damage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/28C02F1/28B01J20/30C02F101/20
CPCB01J20/06B01J20/28009C02F1/281C02F2101/20
Inventor 于岩江永荣庄赞勇肖俊祺
Owner FUZHOU UNIV