Preparation method of iron/carbon composite material

A carbon composite material and iron source technology, applied in the field of materials, can solve the problems of high requirements for experimental instruments, low product output, and long synthesis time, and achieve the effects of reducing risk, reducing raw material costs, and simple operation

Active Publication Date: 2017-06-23
SUZHOU INST FOR ADVANCED STUDY USTC
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Problems solved by technology

However, the synthesis methods of these iron / carbon composites generally have disadvantages such as high cost and complicated operation.
For example: the arc method requires a special arc discharge device and pure raw materials, but the yield of the product obtained is very small; the chemical vapor deposition method requires a special experimental device and the synthesis takes a long time; the high temperature heat treatment method requires at least 1500 ° C High temperature, so not only high energy consumption, time-consuming, but also high requirements for experimental instruments

Method used

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  • Preparation method of iron/carbon composite material
  • Preparation method of iron/carbon composite material
  • Preparation method of iron/carbon composite material

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Experimental program
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Effect test

Embodiment 1

[0040] The preparation method of embodiment 1 iron / carbon composite material

[0041] (1), carbonization of organic matter by hydrothermal method

[0042] Take 2g of rice husk, wash it with water several times to remove surface impurities, and then dry it at about 60°C; add the pretreated raw material into a polytetrafluoroethylene autoclave with an effective volume of 25mL, and add 0.005mol Iron nitrate (Fe(NO 3 ) 3 9H 2 0) solid, add 15mL deionized water, then fully stir to make the reactants fully mix, because the density of the rice husk is small, it is easy to float on the solution, so the rice husk should be fully soaked in clear water before the reaction to make it Can be fully dispersed in the liquid phase, add a steel kettle to the high-pressure reaction kettle filled with reactants, put the steel kettle into an electric blast drying oven, set the reaction temperature to 180°C, and control the appropriate reaction time: 8 hours when rice husk is the carbon source....

Embodiment 2

[0048] The steps are the same as in Example 1, except that 0.01 mol of glucose is used as the carbon source, and in the hydrothermal carbonization step (1), the reaction time is 12 hours.

[0049] From figure 2 It can be seen that the iron / carbon material synthesized with rice husk as a carbon source is black and bright, basically maintaining the original shape of rice husk; the iron / carbon material synthesized with glucose as a carbon source is black powder.

[0050] 1. The material was characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS).

[0051] Taking iron / carbon composites synthesized with glucose as carbon source, the materials were pretreated before characterization. Take a small amount of synthetic product, sprinkle it lightly and evenly on the conductive adhesive used for testing, and then blow the surface of the conductive adhesive with a nitrogen stream to blow away the excess material that is not in contact with the conduc...

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Abstract

The invention relates to the technical field of materials, and specifically discloses a preparation method of an iron/carbon composite material. A hydrothermal method-coprecipitation-electroplating combination method is firstly utilized for preparing the iron/carbon composite material. A synthesis process can be divided into two steps: firstly, carbonizing organic matter raw materials in which iron salt is added by adopting a hydrothermal method; secondly, reducing a carbonized product by adopting a proper reducing agent, thus obtaining the needed iron/carbon composite material. Iron elements in the iron/carbon composite material obtained by utilizing the preparation method mainly and fixedly exist on the surface and the inner part of a porous carbon material in a form of zero-valent iron, and the carbon material is not only used as a substrate for loading the zero-valent iron, but also has a certain protection function on the zero-valent iron; the synthetic composite material has both good reducing ability of the zero-valent iron and good adsorption ability of the carbon material on organic pollutants, so that more efficient removing of the organic pollutants in water is realized.

Description

technical field [0001] The invention relates to the technical field of materials, and more specifically relates to an iron / carbon composite material. Background technique [0002] Iron / carbon composite material is a new type of material with wide application and excellent performance, which is widely used in photocatalytic materials, electrode materials, sensors, sewage treatment and other fields. At present, the synthesis methods of this material mainly include arc method, ion beam method, laser method, chemical vapor deposition method, high temperature heat treatment method and low temperature pyrolysis method. Iron / carbon composites with different particle sizes and shapes can be synthesized by using these preparation methods. However, the synthesis methods of these iron / carbon composites generally have disadvantages such as high cost and complicated operation. For example: the arc method requires a special arc discharge device and pure raw materials, but the yield of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/20B01J23/745C02F1/28C02F1/72
Inventor 李文卫王丹丹柳后起
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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