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Preparation and application of cobalt ferrite-quasi-graphene carbon nano-composite magnetic adsorption material

A magnetic adsorption material, graphene carbon technology, applied in the direction of adsorption of water/sewage treatment, other chemical processes, chemical instruments and methods, etc., can solve the problems of low industrial utilization, difficult recycling, reuse, and unsatisfactory adsorption performance

Inactive Publication Date: 2015-10-21
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its unsatisfactory adsorption performance, and it is difficult to completely recover and reuse, the industrial utilization rate is very low.

Method used

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  • Preparation and application of cobalt ferrite-quasi-graphene carbon nano-composite magnetic adsorption material
  • Preparation and application of cobalt ferrite-quasi-graphene carbon nano-composite magnetic adsorption material
  • Preparation and application of cobalt ferrite-quasi-graphene carbon nano-composite magnetic adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Grapefruit peel pretreatment: collect waste grapefruit peels from surrounding fruit markets, soak them in distilled water to remove surface impurities, cut them into small pieces of about 1 cm × 5 cm, dry them in a drying oven at 60°C to constant weight, and mark For PP, put it in a sealed bag for later use;

[0048] (2) Preparation of composite materials: 0.8080 g Fe(NO 3 ) 3 9H 2 O, 0.2910 g Co(NO 3 ) 2 ·6H 2 O(Fe 3+ 、Co 2+ The mass ratio of the substance is 2:1), after being dissolved in 48 mL deionized water, 0.7500 g PP (mass of pomelo peel and Fe(NO 3 ) 3 9H 2 O and Co(NO 3 ) 2 ·6H 2 The total mass ratio of O is 0.68: 1) immersed in the solution, transferred to a polytetrafluoroethylene reactor, and reacted at 200 °C for 10 h; centrifuged, washed, and dried to obtain a composite material, labeled as CF-SG-1;

[0049] (3) Properties of the composite material: the magnetization is 16.1 emu / g; the adsorption rate of methylene blue is 89.1%.

Embodiment 2

[0051] (1) grapefruit peel pretreatment: with embodiment 1;

[0052] (2) Preparation of composite materials: the amount of grapefruit peel was 1.2500 g (the mass of grapefruit peel and Fe(NO 3 ) 3 9H 2 O and Co(NO 3 ) 2 ·6H 2 O total mass ratio is 1.14: 1), others are the same as in Example 1; the composite material obtained is marked as CF-SG-2;

[0053] (3) Properties of the composite material CF-SG-2: the magnetization is 14.0 emu / g; the adsorption rate of methylene blue is 98.8%.

Embodiment 3

[0055] (1) grapefruit peel pretreatment: with embodiment 1;

[0056] (2) Preparation of composite materials: the amount of grapefruit peel is 2.5000 g (the mass of grapefruit peel and Fe(NO 3 ) 3 9H 2 O and Co(NO 3 ) 2 ·6H 2 O total mass ratio is 2.28: 1), others are the same as embodiment 1; The composite material obtained is marked as CF-SG-3;

[0057] (3) Properties of the composite material CF-SG-3: the magnetization is 8.99 emu / g; the adsorption rate of methylene blue is 78.2%.

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Abstract

The invention provides a preparation method for a cobalt ferrite (CoFe2O4)-quasi-graphite carbon (SG) nano-composite (CF-SG), and belongs to the technical field of composite materials. Fe(NO3)3.9H2O, Co(NO3)2.6H2O and shaddock peel are used as raw materials, deionized water is used as a solvent, and the CoFe2O4-SG nano-composite is obtained through one-step composition by means of a hydrothermal method. The composite material is composed of the CoFe2O4 of the spinel structure and the SG, has the high adsorption activity, can be rapidly separated under the action of a magnetic field, and can achieve recycling of adsorption materials. In addition, the preparation method has the advantages that the technology is simple, the flow path is short, the cost is low, the yield is high, no any additive is adopted in the synthetic process, and environmental protection is achieved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a method for preparing a cobalt ferrite-graphene-like carbon (CF-SG) nanocomposite magnetic adsorption material; the invention also relates to the application of the composite material in treating dye wastewater . Background technique [0002] With the increasing pollution caused by industrial production, environmental pollution has become a global problem that threatens human existence. In the field of wastewater treatment at this stage, adsorption is a relatively fast, effective and advanced water treatment technology. In recent years, more and more researchers have paid attention to the use of agricultural wastes to prepare adsorbents and their wastewater treatment. [0003] Pomelo is abundant in yield and low in price, and the skin of pomelo after eating is basically discarded, which not only causes waste, but also pollutes the environment. The white floc inside ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 苏碧桃董娜莘俊莲何方振董永永靳正娟
Owner NORTHWEST NORMAL UNIVERSITY
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