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Flower-like ferroferric oxide nano-grade material, and preparation method thereof

A technology of ferroferric oxide and nano-materials, which is applied in the direction of iron oxide/iron hydroxide, ferrous iron oxide, etc., which can solve the problem of serious agglomeration, no flower-like structure, and large particle size of ferroferric oxide and other problems, to achieve the effect of good dispersion, low cost and good dispersion

Active Publication Date: 2016-10-26
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above technical problems, a flower-shaped iron ferric oxide nanomaterial and its preparation method are provided to overcome the problems of large particle size, serious agglomeration and no flower-like structure of the ferric oxide prepared by the existing preparation method.

Method used

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  • Flower-like ferroferric oxide nano-grade material, and preparation method thereof
  • Flower-like ferroferric oxide nano-grade material, and preparation method thereof
  • Flower-like ferroferric oxide nano-grade material, and preparation method thereof

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Embodiment 1

[0028] The flower-shaped ferroferric oxide nanomaterial of the present invention is prepared by the following process: (1) Weigh 0.045 mol of ferrous sulfate heptahydrate and 0.090 mol of potassium hydroxide solid, respectively, dissolve them in 90 mL of deionized water, and mix them in hydrogen. Add 0.45mmol of the structure-directing agent polyvinylpyrrolidone to the potassium oxide solution; (2) Under stirring conditions, add the potassium hydroxide solution with the structure-directing agent to the ferrous ion solution to form a dark green colloid, and then add it dropwise 10mL of sodium nitrate solution containing 0.015mol, stirring for 40 minutes; (3) Heat the reacted solution in a water bath at 90°C for 100 minutes, filter the solution after cooling, and dry it in a drying oven at 60°C for 10 hours (4) Magnetic separation of the dried product to obtain flower-like ferroferric oxide nanomaterials.

[0029] figure 1 It is the X-ray diffraction (XRD) pattern of the flower-sha...

Embodiment 2

[0034] The flower-shaped ferroferric oxide nanomaterial of the present invention is prepared by the following process: (1) Weigh 0.054 mol of ferrous sulfate heptahydrate and 0.108 mol of potassium hydroxide solid, respectively, and dissolve them in 90 mL of deionized water. Add 0.045mmol of the structure-directing agent polyvinylpyrrolidone to the potassium oxide solution; (2) Under stirring conditions, add the potassium hydroxide solution with the structure-directing agent to the ferrous ion solution to form a dark green colloid, and then add dropwise 10mL of 0.018mol sodium nitrate solution, stirring for 45 minutes; (3) Heat the reacted solution in a water bath at 85°C for 120 minutes, filter the solution after cooling, and dry for 9 hours in a drying oven at 65°C (4) Magnetic separation of the dried product to obtain flower-like ferroferric oxide nanomaterials.

[0035] The prepared flower-shaped ferroferric oxide was subjected to a metal cadmium (Ⅱ) ion adsorption experiment...

Embodiment 3

[0037] The flower-shaped ferroferric oxide nano material of the present invention is prepared by the following process: (1) Weigh 0.0585 mol of ferrous sulfate heptahydrate and 0.117 mol of potassium hydroxide solid, respectively, and dissolve them in 90 mL of deionized water. Add 0.050mmol of the structure-directing agent polyvinylpyrrolidone to the potassium oxide solution; (2) Under stirring conditions, add the potassium hydroxide solution with the structure-directing agent to the ferrous ion solution to form a dark green colloid, and then add dropwise 10mL of sodium nitrate solution containing 0.0195mol, stirring for 50 minutes; (3) Heat the reacted solution in a water bath at 80°C for 140 minutes, filter the solution after cooling, and dry it in a drying box at 70°C for 8 hours (4) Magnetic separation of the dried product to obtain flower-like ferroferric oxide nanomaterials.

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Abstract

The invention discloses a flower-like ferroferric oxide nano-grade material, and a preparation method thereof. According to the invention, ferrous sulfate heptahydrate and potassium hydroxide are adopted as raw materials, polyvinylpyrrolidone is adopted as a structure-directing agent, sodium nitrate is adopted as an oxidizing agent, ferrous hydroxide dark green colloid is prepared first; an oxidation process is carried out; heating in a water bath is carried out for 100-180min under a temperature of 70-90 DEG C, such that the flower-like ferroferric oxide nano-grade material is obtained. The material provided by the invention has good dispersion properties, and good adsorption performance upon phosphorus and cadmium metal namely cadmium (II). The material has a potential application value in the fields of biomedicine, electronic industry, environmental protection and the like.

Description

Technical field [0001] The invention belongs to the technical field of nano material preparation, and specifically relates to a flower-shaped ferroferric oxide nano material and a preparation method thereof. Background technique [0002] Nano Fe3O4 (Fe 3 O 4 ) Has good chemical stability, low raw material price, and relatively simple preparation method. It has a wide range of applications in the fields of biomedicine, electronics industry and environmental protection. It can be used as a carrier for targeted drugs, data storage and removal of environmental pollutants. Therefore, the research and synthesis of nano ferroferric oxide has important theoretical value and practical significance for the development of nanotechnology. [0003] There is a structure-activity relationship between the properties of nanomaterials and the morphology structure, and the synthesis of nano Fe with special morphology 3 O 4 It is one of the hotspots of its research. Kumar et al. used the pores in t...

Claims

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Application Information

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IPC IPC(8): C01G49/08
CPCC01G49/08C01P2002/72C01P2004/03C01P2006/80
Inventor 谢发之李海斌张峰君汪雪春谢志勇
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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