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Method for preparing ferroferric oxide/carbon /nano-graphite sheet nanocomposite material in situ

A technology of nano-graphite micro-sheets and nano-composite materials, which is applied in chemical instruments and methods, nano-technology, nano-technology and other directions, can solve the problems of decreased physical properties, uneven loading of ferric tetroxide, etc., and achieves complete lamellar structure, The load is uniform and firm, ensuring the effect of uniformity

Active Publication Date: 2015-03-25
鸡西市唯大新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem that the physical properties of the existing ferroferric oxide / graphene composite material decrease during the redox process of graphene, or the loading of ferroferric oxide is not uniform, and provide an in-situ preparation The method of Fe3O4 / carbon / nanographite microsheet nanocomposite material

Method used

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  • Method for preparing ferroferric oxide/carbon /nano-graphite sheet nanocomposite material in situ
  • Method for preparing ferroferric oxide/carbon /nano-graphite sheet nanocomposite material in situ
  • Method for preparing ferroferric oxide/carbon /nano-graphite sheet nanocomposite material in situ

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specific Embodiment approach 1

[0018] Specific embodiment one: a kind of in-situ method for preparing ferric oxide / carbon / nano-graphite microsheet nano-composite material described in this embodiment is carried out according to the following steps:

[0019] 1. Add ferric salt, ferrous salt, expanded graphite and carbon-based compound to the water containing reaction additives, mix and ball mill with a ball mill for 2h to 8h to obtain a well-dispersed composite dispersion system;

[0020] Fe in the ferrous salt 2+ Fe in ferric salt 3+ The molar ratio is 0.5:1; the mass ratio of the expanded graphite to the ferric salt is (0.3~1.5):1; the mass ratio of the carbon-based compound to the ferric salt is (0.2~1.0) : 1; the mass ratio of the volume of the water to the ferric salt is (50-200) mL: 1g; the volume ratio of the reaction aid to water is (0.01-0.04): 1;

[0021] 2. Mix the composite dispersion system with a substance that can be decomposed by heat to produce hydroxide ions and place it in a closed high-...

specific Embodiment approach 2

[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the carbon-based compound described in step one is one or several of chitosan, carboxymethyl chitosan and water-soluble chitosan mixture of species. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025]Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the reaction aid described in step 1 is one of glacial acetic acid, dilute hydrochloric acid and dilute nitric acid or a mixture of several of them. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for preparing a ferroferric oxide / carbon / nano-graphite sheet nanocomposite material in situ and relates to preparation of inorganic nanocomposite materials. The problems that the physical properties are reduced or the ferroferric oxide is non-uniform in load in the process of preparing the ferroferric oxide / graphene composite material or in the graphene oxidation-reduction process are solved. The method comprises the following steps: adding a ferric iron salt, a ferrous iron salt, expanded graphite and a carbon-based compound into water containing a reaction promoter for mixing, performing ball milling by using a ball mill, thereby obtaining a composite dispersion system with good dispersion; mixing the composite dispersion system and a substance which can be heated to decompose a hydroxide ion, adding the mixture into a closed high-pressure hydrothermal reaction kettle, reacting at high temperature, taking out the reaction product, performing suction filtration, drying, grinding, thereby obtaining the ferroferric oxide / carbon / nano-graphite sheet nanocomposite material. The method disclosed by the invention is used for preparing the ferroferric oxide / carbon / nano-graphite sheet nanocomposite material in situ.

Description

technical field [0001] The invention relates to the preparation of inorganic nanocomposite materials. Background technique [0002] Fe 3 o 4 Nanoparticles possess superparamagnetism and magnetic tunneling effect, coupled with their advantages of non-toxicity and biocompatibility, so they have a wide range of applications as a functional material. Due to its superparamagnetism, when the nano-ferric oxide solution is placed in an external magnetic field, the sample will be attracted to the side of the magnetic field; when the magnetic field is removed, the ferric oxide particles will re-disperse in the water. Utilizing the magnetic responsiveness of ferroferric oxide, a series of functional composite materials with magnetic field responsive characteristics can be prepared, which can be widely used in the fields of targeting carrier, material separation, environmental water treatment and so on. Fe 3 o 4 It also has the advantages of high theoretical specific capacity, abun...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B82Y30/00
CPCB01J20/06B01J20/205B01J2220/42B01J2220/4806B82Y30/00B82Y40/00
Inventor 王永亮赖文伟韩志东
Owner 鸡西市唯大新材料科技有限公司
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