Synthesis method of graded porous carbon nanometer material

A technology of carbon nanomaterials and synthesis methods, which is applied in the field of synthesis of hierarchical porous carbon nanomaterials, can solve the problems of complex preparation process, large organic solvent, unfavorable wide application and exploration of hierarchical porous carbon materials, etc. High adaptability and mild condition effect
CN110357068AActive Publication Date: 2019-10-22安徽枡水新能源科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
安徽枡水新能源科技有限公司
Publication Date
2019-10-22

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Abstract

The invention provides a synthesis method of a graded porous carbon nanometer material. The synthesis method of the graded porous carbon nanometer material comprises the following steps: A) mixing small organic molecules containing polychelating grou or o-hydroxyl grou and inorganic zinc salt into an alkaline aqueous solution and performing reaction to obtain a precursor which is separated out inthe form of precipitate; and B) performing high-temperature pyrolysis on the precursor to obtain the graded porous carbon nanometer material. The small organic molecules containing the polychelating group or the o-hydroxyl group and zinc are stirred in the alkaline aqueous solution at a room temperature to form a coordinate polymer or a coordinate compound serving as the precursor, the precursor in the high-temperature pyrolysis process and the chelated zinc are agglomerated to form nanoscale dispersed zinc particles to realize a template pore-forming effect, and the zinc nanoparticles can realize evaporation through further high-temperature treatment, so that the graded porous carbon nanometer material can be obtained without subsequent etching. The synthesis method provided by the invention is simple, low in cost, high in controllability, high in universality and mild in condition.
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Description

technical field

[0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a synthesis method of hierarchical porous carbon nanomaterials. Background technique

[0002] Traditional porous carbon materials are obtained by high-temperature pyrolysis of biomass materials (such as pitch, coconut shell, lignocellulose, corn stalks, etc.) as precursors, combined with physical or chemical activation methods. Through this simple and low-cost synthesis method, a series of biomass-derived porous carbon materials have been developed in industry, and are widely used in the separation of gases or liquids, water treatment, air purification and other fields. However, due to the influence of the place of origin, growth environment and its own characteristics, the structure and composition of biomass materials are complex and the content of impurities is high, which leads to poor controllability of the microstructure and properties of the derived carbo...

Claims

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