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A kind of porous carbon material and preparation method thereof

A carbon material and multi-level porous technology, which is applied in the field of novel hierarchical porous carbon materials and their preparation, can solve problems such as long preparation routes, and achieve the effects of low equipment requirements, simple preparation process, and shortened preparation time.

Active Publication Date: 2019-07-02
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming of long preparation route, time-consuming and raw material price, propose a kind of preparation method of novel multi-level porous carbon material, prepare the multi-level porous carbon material with rich macropore and mesopore, raw material price Inexpensive, easy to obtain, simple method, and has the potential of large-scale production

Method used

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  • A kind of porous carbon material and preparation method thereof
  • A kind of porous carbon material and preparation method thereof
  • A kind of porous carbon material and preparation method thereof

Examples

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specific Embodiment 1

[0030] Specific embodiment 1 of the present invention: a kind of novel hierarchical porous carbon material, such as figure 1 As shown, it is prepared by the following method: polymethyl methacrylate (PMMA) is used as a macroporous template, and silicon dioxide is used as a mesoporous template; after self-assembly, carbonization, and removal of the template, it is obtained; the details include the following step:

[0031] (1) Ultrasonicate PMMA in water for 10 minutes, pour it into a centrifuge tube, centrifuge at 1000 rpm for about 2 minutes, then dry it in an oven, and then grind it for use. The scanning electron microscope (SEM) picture is as follows figure 2 shown, from figure 2 It can be seen that after PMMA treatment, the particle size is uniform, the particle size is about 1-2 μm, and it is regular and orderly.

[0032] (2) Weigh 1gPMMA and 4mLSiO 2 Mix the dispersion, add 100mL of pure water, stir for about 1 hour, sonicate for about 4 hours, pour it into a petri d...

Embodiment 2

[0035] Example 2: A new type of hierarchical porous carbon material, using polymethyl methacrylate (PMMA) as a macroporous template, and silica as a mesoporous template; after self-assembly, carbonization, and removal of the template, it is obtained; Specifically include the following steps:

[0036] (1) Ultrasonicate PMMA particles in water for about 10 minutes, pour them into a centrifuge tube, centrifuge at 1000 rpm for about 2 minutes, then dry them in an oven, and then grind them for use.

[0037] (2) Weigh 0.5g PMMA particles and 2mL SiO 2 Mix the dispersion, add 100 mL of pure water, stir for about 1 h, sonicate for about 4 h, pour into a petri dish, and dry in an oven at 60°C to obtain an assembled solid block.

[0038] (3) in N 2 The carbonization was carried out in a muffle furnace under the atmosphere, the carbonization heating rate was 1 °C / min, the temperature was raised to 600 °C, the temperature was kept constant for 1 h, and cooled to room temperature under t...

Embodiment 3

[0040] Example 3: A new type of hierarchical porous carbon material, using polymethyl methacrylate (PMMA) as a macroporous template, and silica as a mesoporous template; after self-assembly, carbonization, and removal of the template, it is obtained; Specifically include the following steps:

[0041] (1) Ultrasonicate PMMA particles in water for about 10 minutes, pour them into a centrifuge tube, centrifuge at 1000 rpm for about 2 minutes, then dry them in an oven, and then grind them for use.

[0042] (2) Weigh 0.5g PMMA particles and 2mL SiO 2 Mix the dispersion, add 100 mL of pure water, stir for about 1 h, sonicate for about 4 h, pour into a petri dish, and dry in an oven at 60°C to obtain an assembled solid block.

[0043] (3) in N 2 The carbonization was carried out in a muffle furnace under the atmosphere, the carbonization heating rate was 1°C / min, the temperature was raised to 500°C, kept at a constant temperature for 2h, and cooled to room temperature under the pro...

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Abstract

The invention discloses a preparation method of a novel multi-stage pore carbon material and a product thereof. The preparation method comprises the following steps: by taking polymethylmethacrylate particles as a macroporous template and a carbon source at the same time, and by taking silicon dioxide particles as a mesoporous template, dispersing the polymethylmethacrylate particles and the silicon dioxide particles in water, self-assembling into a mixed template by evaporating, heating and carbonizing by a program under a nitrogen atmosphere, removing the template and drying to obtain the multi-stage pore carbon material. The large pore diameter is about 1-2mu m, and the mesoporous diameter is about 10-30nm. The method can effectively control the internal structure of carbon materials by changing the particle size of raw materials, which can be used in the field of water pollution adsorption. The preparation method disclosed by the invention has the advantages of low raw material price, simple synthetic process flow, low requirement on the process, simple operation and easy realization of large-scale industrialized production.

Description

technical field [0001] The invention relates to a novel multi-level porous carbon material and a preparation method thereof, belonging to the technical field of carbon material preparation. Background technique [0002] Hierarchical porous carbon materials are carbon materials with carbon as the main skeleton and two or more types of pores penetrating through the material. In addition to the high thermal and electrical conductivity and chemical stability of general carbon materials, this kind of material also has a large specific surface area, pore structure and short-range diffusion path, which is beneficial to the transmission and diffusion of substances. Its well-developed pore structure and the synergistic effect of multi-level pores make it superior to other carbon materials with a single pore structure in the field of adsorbing pollutants, and can be widely used in adsorption, catalysis, energy storage, drug loading and other fields. [0003] At present, the common me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05
Inventor 徐立恒亓昌利张明王中苗
Owner CHINA JILIANG UNIV
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