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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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  • Description
  • Claims
  • Application Information

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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 loading nanoparticles on porous carbon materials, and provides a method for preparing a porous biochar composite material loaded with α-FeOOH nanorods

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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specific Embodiment approach 1

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

[0039] Step 1. Cutting and washing the biochar raw material, drying, crushing, and passing through a 100-mesh sieve; mixing and grinding the pulverized biochar raw material and metal salt to obtain a mixture, placing the obtained mixture in a tube furnace, and passing through an inert Under the condition of gas, control the heating temperature, heating time and heating rate to obtain the porous biochar material after pyrolysis and carbonization;

[0040] Step 2, placing the pyrolytic carbonized porous biochar material in distilled water for repeated cleaning, after drying, immersing it in an acidic oxidant solution, heating it in a water bath for 7-10 hours, taking it out and repeatedly rinsing with distilled water, and drying to obtain a porous biochar material;

[0041] Step 3, soak the porous biocha...

specific Embodiment approach 2

[0047] Embodiment 2: This embodiment differs from Embodiment 1 in that: the biochar raw material in Step 1 is corn straw, wheat straw or rice straw. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0048] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the metal salt in step one is KHCO 3 , NaHCO 3 , ZnCl 2 or LiNO 3 . Others are the same as in 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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