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Adsorbing agent based on ferroferric oxide and graphene and preparation method of adsorbing agent

A technology of ferroferric oxide and graphene, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problem that the composite structure preparation scheme has not been reported and lacks the preparation of adsorbents method, no report discusses the application function and other issues, and achieves the effect of being beneficial to the adsorption of pollutant molecules, strong adsorption of heavy metal ions and organic dyes, and low raw material prices

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

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Problems solved by technology

[0004] However, so far, there is no report discussing the application function of ferroferric oxide and graphene composite materials for the adsorption and purification of heavy metal wastewater, and the preparation scheme of its composite structure has not been reported.
[0005] At present, there is a lack of an adsorbent with strong magnetic properties and high adsorption function and its preparation method

Method used

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  • Adsorbing agent based on ferroferric oxide and graphene and preparation method of adsorbing agent
  • Adsorbing agent based on ferroferric oxide and graphene and preparation method of adsorbing agent
  • Adsorbing agent based on ferroferric oxide and graphene and preparation method of adsorbing agent

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Embodiment 1

[0025] (1) Preparation of Fe3O4 nanoparticles with uniform morphology. First, mix 1.3g of ferric chloride hexahydrate and 40ml of ethylene glycol, then add 3.5g of anhydrous sodium acetate and 1g of polyethylene glycol and stir magnetically for 40min at room temperature. Then the khaki-colored mixture was sonicated for 10 min, poured into a reaction kettle, and put into an oven at 180° C. for 12 h. After natural cooling, rinse repeatedly with alcohol and deionized water, use a magnet to suck out the magnetic ferric oxide product, put it into a vacuum drying oven at 50° C. for 5 hours, and obtain black ferric oxide nanosphere powder.

[0026] (2) Preparation of graphene oxide. Take 0.5g of flake graphite, 30ml of concentrated sulfuric acid (concentration: 98%), 3g of potassium permanganate, and 0.5g of sodium nitrate, put them into a freezer, and cool for 4 hours at a temperature of 0-5°C. Then, add graphite, sodium nitrate, and potassium permanganate to the liner of the reac...

Embodiment 2

[0037] The difference between embodiment 2 and embodiment 1 is: the adsorbent based on ferric oxide and graphene is made up of two components of graphene oxide and ferric oxide, wherein, the mass ratio of graphene oxide and ferric oxide is 1:1.

[0038] The graphene oxide is 80 mg; the ferric oxide is 80 mg.

[0039] The method for preparing the described adsorbent based on ferric oxide and graphene comprises the following steps:

[0040] (1) Weigh graphene oxide and iron ferric oxide respectively; add 80 mg of graphene oxide into deionized water to configure 40 ml of aqueous solution, and magnetically stir for 2.5 hours at room temperature;

[0041] (2) Add 80 mg of ferric oxide to obtain a mixed solution with a mass ratio of graphene oxide and ferric oxide of 4:1 respectively. After ultrasonic mixing and dispersion, pour it into a reaction kettle for reaction, and gradually heat up at a rate of 4:1. 8°C / min. Heat to a temperature of 190°C, keep the temperature stable, and...

Embodiment 3

[0044] The difference between embodiment 3 and embodiment 1 is: a kind of adsorbent based on ferric oxide and graphene of the present invention, the adsorbent based on ferric oxide and graphene is made of two kinds of graphene oxide and ferric oxide Component composition, wherein the mass ratio of graphene oxide to ferric oxide is 8:1.

[0045] The graphene oxide is 80mg; the ferric oxide is 10mg.

[0046] The method for preparing the described adsorbent based on ferric oxide and graphene comprises the following steps:

[0047] (1) Weigh graphene oxide and ferric oxide respectively; add 80 mg of graphene oxide into deionized water to configure 40 ml of aqueous solution, and magnetically stir for 3 hours at room temperature;

[0048] (2) Add 10 mg of ferroferric oxide to obtain a mixed solution with a mass ratio of graphene oxide and ferric oxide of 4:1 respectively. After ultrasonically fully mixing and dispersing, pour it into a reaction kettle for reaction, and gradually he...

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Abstract

The invention discloses an adsorbing agent based on ferroferric oxide and graphene and a preparation method of the adsorbing agent. The adsorbing agent based on the ferroferric oxide and the graphene is composed of oxidized graphene and ferroferric oxide, wherein the mass ratio of oxidized graphene to ferroferric oxide is 1:1-8:1. The process is simple, raw materials are low in price, and the adsorbing agent is green and non-toxic, can be produced in batches, has high adsorption performance and superparamagnetism, is capable of efficiently adsorbing pollutants such as heavy metal ions and is capable of performing quick separation by virtue of the control of an external magnetic field.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry, and in particular relates to an adsorbent based on ferric oxide and graphene and a preparation method thereof. Background technique [0002] With the development of globalization, the pollution of heavy metals to water bodies has attracted widespread attention all over the world, because they are highly toxic in water and easy to spread, which poses a great threat to human survival. Due to the rapid progress of industry, many industries such as leather manufacturing, metallurgy, battery production, electroplating, etc. produce a large amount of wastewater containing a variety of toxic heavy metal ions. As a traditional method to remove water pollution, adsorption has some obvious advantages, such as low cost, wide pH range, and easy operation. However, the traditional adsorbents are not ideal for heavy metal ion adsorption, and the separation process is complicated, easy to introduce secondary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/62
CPCB01J20/20B01J20/28009C02F1/288
Inventor 许小勇周钢冯兵朱文昌胡经国
Owner YANGZHOU UNIV
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