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Preparation and application of morphology-adjustable hollow cage-shaped Mn/Fe oxide nano material

A technology of nanomaterials and oxides, applied in the direction of metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, nanotechnology for materials and surface science, etc., can solve the problem of large amount of catalysts and incomplete degradation and other problems, to achieve the effect of less environmental pollution, significant catalytic effect, and catalytic effect recovery

Active Publication Date: 2018-11-02
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, researchers have synthesized Mn / Fe oxides to catalyze PMS to degrade bisphenol A, but most of the researches require a large amount of catalysts and have the disadvantages of incomplete degradation.

Method used

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  • Preparation and application of morphology-adjustable hollow cage-shaped Mn/Fe oxide nano material
  • Preparation and application of morphology-adjustable hollow cage-shaped Mn/Fe oxide nano material
  • Preparation and application of morphology-adjustable hollow cage-shaped Mn/Fe oxide nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of hollow dice-like Mn / Fe oxide nanomaterials:

[0032] (1) Dissolve 0.6 g of PVP in a mixed solution of 20 mL of water and 20 mL of ethanol until completely dissolved;

[0033] (2) Dissolve 0.063 g of manganese sulfate monohydrate and 0.0159 g of ferric sulfate in the solution of step (1), stir at room temperature for 15 min, and then sonicate for 10 min;

[0034] (3) 0.132 g of potassium ferricyanide (K 3 [Fe(CN) 6 ]) was dissolved in 20 mL of water until completely dissolved;

[0035] (4) Add the solution of step (3) to the solution of step (2), stir at room temperature for 1 h, wash with ethanol solution for 3 times, and wash with water for 1 time, place in the refrigerator for 1 h, and place in freeze-dry Dry in the machine for 2-3 h to obtain the Mn / Fe-like Prussian blue precursor;

[0036] (5) 0.033 g of the Prussian blue-like precursor synthesized in step (4) was dissolved in 25 mL of water and ultrasonicated for 20 min to obtain a homogeneous so...

Embodiment 2

[0041] Preparation of hollow spherical Mn / Fe oxide nanomaterials:

[0042] (1) Dissolve 0.6 g of PVP in a mixed solution of 20 mL of water and 20 mL of ethanol until completely dissolved;

[0043](2) Dissolve 0.036 g of manganese sulfate monohydrate and 0.0319 g of ferric sulfate in the solution of step (1), stir at room temperature for 15 min and then sonicate for 10 min;

[0044] (3) 0.132 g of potassium ferricyanide (K 3 [Fe(CN) 6 ]) was dissolved in 20 mL of water until completely dissolved;

[0045] (4) Add the solution of step (3) to the solution of step (2), stir at room temperature for 1 h, wash with ethanol solution for 3 times, and wash with water for 1 time, place in the refrigerator for 1 h, and place in freeze-dry Dry in the machine for 2-3 h to obtain the Mn / Fe-like Prussian blue precursor;

[0046] (5) 0.033 g of the Prussian blue-like precursor synthesized in step (4) was dissolved in 25 mL of water and ultrasonicated for 20 min to obtain a homogeneous solu...

Embodiment 3

[0051] Preparation of hollow octahedral Mn / Fe oxide nanomaterials:

[0052] (1) Dissolve 0.6 g of PVP in a mixed solution of 20 mL of water and 20 mL of ethanol until completely dissolved;

[0053] (2) Dissolve 0.027 g of manganese sulfate monohydrate and 0.0372 g of ferric sulfate in the solution of step (1), stir at room temperature for 15 min, and then sonicate for 10 min;

[0054] (3) 0.132 g of potassium ferricyanide (K 3 [Fe(CN) 6 ]) was dissolved in 20 mL of water until completely dissolved;

[0055] (4) Add the solution of step (3) to the solution of step (2), stir at room temperature for 1 h, wash with ethanol solution for 3 times, and wash with water for 1 time, place in the refrigerator for 1 h, and place in freeze-dry Dry in the machine for 2-3 h to obtain the Mn / Fe-like Prussian blue precursor;

[0056] (5) 0.033 g of the Prussian blue-like precursor synthesized in step (4) was dissolved in 25 mL of water and ultrasonicated for 20 min to obtain a homogeneous s...

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Abstract

The invention belongs to the field of material science and environment engineering and in particular relates to preparation and application of a morphology-adjustable hollow cage-shaped Mn / Fe oxide nano material. The preparation comprises the following steps: enabling PVP (Polyvinyl Pyrrolidone), ferric sulfate, manganese sulfate, a solution system of ethanol and water, and a potassium ferricyanide solution to react at a room temperature so as to obtain a prussian blue like precursor with Mn / Fe of different morphologies; further etching the precursor with mercaptoacetic acid (TGA) so as to obtain a hollow Mn / Fe prussian blue nano material; finally calcining, thereby obtaining a hollow Mn / Fe oxide nano material. The hollow Mn / Fe oxide nano material provided by the invention is simple in synthesis process, low in cost, high in yield, green and environmentally friendly, bisphenol A pollutants can be effectively removed and can be recycled, a simple, convenient and efficient method is provided for treatment on phenol pollutants, good economic benefits and environment benefits can be achieved, and large-scale production application can be carried out.

Description

technical field [0001] The invention belongs to the field of material science and environmental engineering, and in particular relates to the preparation and application of a hollow cage-like Mn / Fe oxide nanomaterial with adjustable appearance. Background technique [0002] Due to its stable structure, high toxicity, and difficult to handle, bisphenol A has become a toxic pollutant for priority control. In recent years, many scholars have used catalytic degradation, activated carbon adsorption and other methods to degrade bisphenol A, but most of the methods are only suitable for the treatment of high-concentration pollutants and have the advantages of long treatment time, incompleteness, high cost, and easy to bring Defects such as secondary pollution limit its large-scale application. [0003] Nowadays, technologies related to the use of transition metal oxide nanomaterials to treat organic pollutants are rapidly emerging, among which Mn / Fe oxide is gradually favored by r...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J35/10B01J37/08B01J37/34B82Y30/00B82Y40/00C02F1/72C02F101/34
CPCB82Y30/00B82Y40/00C02F1/722C02F1/725B01J23/002B01J23/8892B01J37/086B01J37/343C02F2101/345B01J35/61
Inventor 于岩吴甚杰陈艳蕾庄赞勇
Owner FUZHOU UNIV
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