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Method for preparing coated nano zero valent iron by rheological phase reaction method, and prepared product thereof

A nano-zero-valent iron and rheological phase technology, applied in the direction of improving process efficiency, can solve problems such as difficulties in transportation, storage and use, difficulty in performance, and harsh preparation conditions, so as to reduce the requirements for the preparation environment and equipment, and improve the production efficiency. Environmental affinity and effect of improving dispersion

Inactive Publication Date: 2011-09-14
JINGDEZHEN CERAMIC INSTITUTE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the practicality of nanomaterials is premised on their good dispersion and long-term stability in environmental media, otherwise, first, it will be difficult to exert their excellent performance; second, it will bring many difficulties to transportation, storage and use.
In the existing preparation technologies, most of the preparation conditions are harsh and the equipment is complicated; it is also impossible to improve its dispersibility and stability in the air at the same time

Method used

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  • Method for preparing coated nano zero valent iron by rheological phase reaction method, and prepared product thereof
  • Method for preparing coated nano zero valent iron by rheological phase reaction method, and prepared product thereof

Examples

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Embodiment

[0018] Step 1: Dissolve 6g of CMC in 100mL of deionized water, and stir with a magnetic stirrer for 1 hour under the condition of slight heating at 40°C to prepare a liquid medium for insulation;

[0019] Second step: accurately weigh 2 mol of chemically pure ferrous sulfate and 4 mol of potassium hydrogen borate, mix them in a mortar for 10 minutes, and prepare a solid mixture for subsequent use;

[0020] Step 3: Weigh 50g of the solid mixture into a 200ml beaker, add 100ml of CMC liquid medium for mixing, and stir for 30 minutes to prepare a rheological state;

[0021] The fourth step: carry out rheological phase reaction for 2 hours under vacuum and normal temperature stirring to obtain a solid-liquid mixture of zero-valent iron and boric acid;

[0022] Step 5: Wash the solid-liquid mixture of zero-valent iron and boric acid with 100mL of absolute ethanol for 3 times. When washing, use a magnet to attract the solid matter at the bottom so that the liquid can be poured out. ...

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Abstract

The invention relates to a method for preparing coated nano zero valent iron by a rheological phase reaction method, and a prepared product thereof. The method comprises the following steps: adding carboxy methylated cellulose (CMC) liquid medium at the concentration of 0.06g / ml into chemical pure ferrous sulfate and boracic acid which serve as main raw materials in a solid-to-liquid ratio of 1 to 2, performing rheological phase reaction for two hours, washing the product by using absolute ethanol, and distilling and separating to obtain the powdery nano zero valent iron. The preparation method is simple, and is easy to control, and environment-friendly, the steps of ball-milling, sintering and the like are saved, and the product has high environment friendliness, does not cause secondary pollution and can be widely applied to environment treatment and repairing.

Description

technical field [0001] The invention relates to a method for preparing coated nanometer zero-valent iron by a rheological phase reaction method and a product thereof, in particular to a kind of wrapped nanometer zero-valent iron which can be applied to environmental treatment and restoration. Background technique [0002] Zero-valent ferroelectricity is relatively large and has strong reducibility. It can be used to treat certain trace organic pollutants in water bodies, and can act as a catalyst to accelerate the reaction process. Both indoor experiments and field tests have shown that zero-valent iron particles can degrade halogenated aliphatic hydrocarbons, halogenated aromatic hydrocarbons, and some polychlorinated biphenyl chemical pollutants, that is, when pollutants such as halogenated hydrocarbons or halogenated aromatic hydrocarbons After the halogen atoms on the surface get the electrons provided by the zero-valent iron, the halogens will fall off from the molecul...

Claims

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Application Information

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IPC IPC(8): B22F9/24C21B15/00C22B3/44
CPCY02P10/20
Inventor 成岳焦创刘海江
Owner JINGDEZHEN CERAMIC INSTITUTE
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