Universal method for preparing hierarchical pore coexisting heteroatom doped carbon catalyst by using soft template agent, and applications of hierarchical pore coexisting heteroatom doped carbon catalyst

Abstract

The invention discloses a universal method for preparing a hierarchical pore coexisting heteroatom doped carbon catalyst by using a soft template agent, and applications of the hierarchical pore coexisting heteroatom doped carbon catalyst, and belongs to the technical field of synthesis of porous carbon materials. The technical scheme comprises: uniformly mixing biomass, a soft template agent anda doping agent to obtain a material A; heating the material A for 60 min to achieve 300 DEG C from a room temperature under the protection of inert gas, keeping the temperature for 120 min, heating to800 DEG C at a heating rate of 3 DEG C / min, keeping the temperature for 120 min, and naturally cooling to a room temperature to obtain a material B; and washing the material B with a hydrochloric acid solution, and drying at 105 DEG C for 12 h to obtain the hierarchical pore coexisting heteroatom doped carbon catalyst. According to the invention, the electrochemical performance of the synthesizedheteroatom-doped carbon catalyst is tested by using a rotating disc to screen the electrode material subjected to a two-electron reaction, and the screened material as a cathode material is used in an electro-Fenton degradation system to efficiently degrade organic pollutants, so that the work of the screening of the electrode material is reduced, and secondary pollution cannot be caused in the using process.

Description

technical field [0001] The invention belongs to the technical field of synthesis of porous carbon materials, and in particular relates to a universal method for preparing heteroatom-doped carbon catalysts with coexisting hierarchical pores by using a soft template agent and its application. Background technique [0002] While the rapid development of industry has greatly improved human living standards, it has also brought about increasingly serious water pollution problems, and the human living environment is facing a huge threat. Industrial wastewater contains a huge amount and a wide variety of organic pollutants. Due to its high toxicity, difficult degradation and great harm, it has attracted more and more attention from researchers. The substandard discharge of industrial wastewater into water bodies not only pollutes water bodies, but also accumulates in living organisms, directly affecting the ecological environment and human health. Therefore, how to quickly and eff...

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Problems solved by technology

[0005] The technical problems solved by the present invention are as follows: First, based on the previous research work of this research group, the electrochemical performance of the electrode material is tested by using the rotating disk electrode, so as to provide theoretical guidance for the application of the screening electrode material, and two electron transfers will occur through calculation The electrode material used in the electro-Fenton degradation system, and the four-electron transfer material used in the oxygen reduction fuel cell will raise the blind trial work to theoretical guidance, which greatly simplifies the trial work of screening electrode materials; second, through this The development of this research work provides a universal method for the preparation of heteroatom-doped carbon catalysts with coexistence of hierarchical pores using soft templates with simple process, low cost and environmental friendliness. This method uses cheap biomass carbon materials As a catalyst, using C 10 h 18 K 2 N 2 o 10 Modification of carbon materials as soft templates and dopants, for the first time with C 10 h 18 K 2 N 2 o 10 As a soft template, it decomposes into H during calcination 2 O, CO, CO 2 , NO x and other gases, while the dopant undergoes high-temperature pyrolysis to release small molecular gas as a pore-forming agent. During the activation process, due to the different decomposition temperatures of the soft templating agent and the dopant, it results in staged activation, which is conducive to the formation of multi-level pores. structure, thus realizing the synthesis of carbon materials with rich hierarchical pore structure

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