Preparation method of alpha-FeOOH nanorod-loading porous charcoal composite material

A composite material and biochar technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high cost and nano-scale FeOOH particle agglomeration, so as to improve the adsorption efficiency, improve the utilization value, and increase the ratio The effect of surface area

Active Publication Date: 2018-09-04
NORTHEAST AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0005] The present invention aims to solve the problems of high cost and easy aggregation of nano-scale FeOOH particles in the existing method of lo

Method used

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  • Preparation method of alpha-FeOOH nanorod-loading porous charcoal composite material
  • Preparation method of alpha-FeOOH nanorod-loading porous charcoal composite material
  • Preparation method of alpha-FeOOH nanorod-loading porous charcoal composite material

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Example Embodiment

[0038] Specific embodiment 1: The preparation method of the porous biochar composite material supported by α-FeOOH nanorods in this embodiment includes the following steps:

[0039] Step 1. Cut and wash the biochar raw materials, dry and pulverize, and pass through a 100-mesh sieve; mix and grind the pulverized biochar raw materials with metal salts to obtain a mixture, and place the obtained mixture in a tube furnace. Under the condition of gas, control the heating temperature, heating time and heating rate to obtain porous biochar material after pyrolysis and carbonization;

[0040] Step 2: Put the pyrolyzed and carbonized porous biochar material in distilled water for repeated washing, dry and immerse it in an acidic oxidant solution, heat it in a water bath for 7-10 hours, take it out and rinse it with distilled water repeatedly, and dry to obtain the porous biochar material;

[0041] Step 3: Immerse the porous biochar material obtained in step 2 in an iron salt aqueous solution ...

Example Embodiment

[0047] Specific embodiment two: This embodiment is different from specific embodiment one in that the raw material of biochar in step one is corn straw, wheat straw or rice straw. Others are the same as the first embodiment.

Example Embodiment

[0048] Specific embodiment three: This embodiment is different from specific embodiment one or two in that the metal salt in step one is KHCO 3 , NaHCO 3 , ZnCl 2 Or LiNO 3 . Others are the same as the first or second embodiment.

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Abstract

The invention relates to a preparation method of an alpha-FeOOH nanorod-loading porous charcoal composite material, relates to a preparation method of the porous charcoal composite material, and aimsto solve the problems that an existing method for loading nano particles on a porous carbon material is high in cost, and nanoscale FeOOH particles are easy to agglomerate. The method comprises the following steps: (1) pyrolyzing and carbonizing a charcoal raw material; (2) cleaning the pyrolyzed and carbonized charcoal raw material, drying, immersing into an acidic oxidizing agent solution, heating, flushing, and drying to obtain a porous charcoal material; (3) immersing the porous charcoal material into a ferric salt water solution, stirring, adding a strong alkaline solution, uniformly mixing, putting mixed liquid into a reaction kettle, carrying out hydrothermal reaction, and finally vacuum drying to obtain the alpha-FeOOH nanorod-loaded porous charcoal composite material. Maize strawsas agricultural waste are low in price and easy to get, so that the cost is reduced when the maize straws are adopted as a carbon source. The preparation method of the alpha-FeOOH nanorod-loaded porous charcoal composite material, provided by the invention is applied to the field of biological composites.

Description

technical field [0001] The invention relates to a preparation method of a porous biochar composite material. Background technique [0002] As a naturally ubiquitous mineral in soil / sediment, α-FeOOH is widely used in the degradation of organic pollutants and environmental treatment of sewage due to its relative stability and low cost. Compared with bulk materials, nanoscale FeOOH with high reactivity may agglomerate, which in turn reduces its adsorption effect. [0003] At present, most of the dispersion support materials that increase the active sites and prevent the aggregation of metal ions are inert porous materials, such as zeolites, metal oxides, mesoporous silica, porous carbon, graphene, etc. It has been shown that highly active and stable gold nanoparticle catalysts were synthesized in ordered mesoporous carbon materials by using coordination-assisted synthesis method with phenolic resin as carbon source. The material has an ordered mesoporous structure, high surf...

Claims

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Application Information

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IPC IPC(8): C01B32/348C01B32/354C01G49/02B82Y30/00B82Y40/00B01J20/20B01J20/30
CPCB01J20/0229B01J20/20B82Y30/00B82Y40/00C01B32/348C01B32/354C01G49/02B01J2220/4825C01P2004/03C01P2002/72C01P2004/80
Inventor 杨帆张帅帅程魁李慧鹏李帅帅
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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