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Micro/nano structural ferroferric oxide hollow spheres and preparation method thereof

A technology of ferric oxide and micro-nano structure, which is applied in the direction of iron oxide/iron hydroxide, ferric oxide, nanotechnology, etc., to achieve the effects of simple process, convenient post-processing, and low reaction temperature

Inactive Publication Date: 2011-08-17
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the method for synthesizing hollow spheres of micro-nano structure Fe3O4. The present invention utilizes hydrothermal method to synthesize the hollow spheres of Fe3O4 with micro-nano structure in one step, and provides a simple micro-nanostructure Fe3O4 hollow spheres. The preparation method of iron hollow spheres, and the micro-nano-structured ferric iron tetroxide hollow spheres have obvious removal effect on persistent organic pollutants PCB-77

Method used

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  • Micro/nano structural ferroferric oxide hollow spheres and preparation method thereof
  • Micro/nano structural ferroferric oxide hollow spheres and preparation method thereof
  • Micro/nano structural ferroferric oxide hollow spheres and preparation method thereof

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Embodiment

[0030] Embodiment: a micro-nano structured iron ferric oxide hollow sphere, which is composed of ferric iron tetroxide. The ferric ferric oxide is a hollow spherical structure. There are nanometer mesopores between the structures;

[0031] The micro-nano-structure iron ferric oxide hollow sphere has a diameter of 500-10000nm and a specific surface area of ​​10-25m 2 / g; the pore diameter of the nano-mesopore is 10-100nm.

[0032] The preparation method of the micro-nano structure ferric oxide hollow spheres comprises the following steps:

[0033](1) Firstly, 3 mmol of ferrous chloride tetrahydrate, 1.5 mmol of ascorbic acid and 10 mmol of urea were dissolved in 20 mL of deionized water, and a uniform solution was obtained under stirring with a magnetic stirrer, and then 1.2 mL of oleic acid was dispersed in 30 mL of Add in the homogeneous solution of ferrous chloride tetrahydrate, urea, ascorbic acid after stirring evenly in the water ethanol;

[0034] (2) Stir the above mi...

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Abstract

The invention discloses micro / nano structural ferroferric oxide hollow spheres and a preparation method thereof. The micro / nano structural ferroferric oxide hollow spheres are prepared from ferrous chloride tetrahydrate, urea, ascorbic acid and oleic acid in mixed solution of water and absolute ethanol, and then the synthesized micro / nano structural ferroferric oxide hollow spheres are tested in a removal experiment of durable organic pollutant polychlorinated biphenyl 77 (PCB-77). Substances such as templates and the like do not need to be added in the reaction process of the hydrothermal prepared micro / nano structural ferroferric oxide hollow spheres, the method is environment-friendly, the post treatment is convenient, the reaction temperature is low, and the process is simple; and the prepared micro / nano structural ferroferric oxide hollow spheres have porous hollow structures, have high specific surface area and activity of nano structures, and can effectively prevent agglomeration of granules.

Description

technical field [0001] The invention relates to a micro-nano structure iron ferric oxide hollow sphere and a novel preparation method thereof. The micro-nano structure iron ferric oxide hollow sphere is prepared in one step by a hydrothermal method, and the effect of the micro-nano structure iron ferric oxide hollow sphere on the solution is investigated. Applications in the treatment of medium persistent organic pollutants PCB-77. Background technique [0002] As we all know, environmental pollution is becoming more and more serious, and persistent organic pollutants (POPs) are one of the main pollutants of environmental pollution. Polychlorinated biphenyls (PCBs) are a type of organic pollutants (POPs). As an important chemical product, PCBs are widely used in the fields of chemical industry, printing, plastic processing industry and electric power industry. PCBs are endocrine disruptors, which can cause great damage to the nervous system, reproductive system and immune ...

Claims

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Application Information

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IPC IPC(8): C01G49/08B82Y40/00
Inventor 刘岗汪国忠邓泉杨勇王惠敏康升红蔡伟平孔明光
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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