Application Of Porous Carbon-based Materials Prepared By Hard Template Method In Optical/electrocatalytic

The burning of fossil fuels inevitably brings environmental pollution problems,which seriously affect people's daily life and the stability of the ecological environment.On the one hand,it is urgent to find an effective solution to the pollution problem.This requires researchers to develop more products for water and air purification.On the other hand,the use of new energy conversion devices to replace traditional fossil fuel energy devices can fundamentally reduce or even eliminate the emergence of pollution.In this paper,a hard template method is used to prepare porous carbon-based materials by photocatalytic decomposition of organic pollutants in water and cathode catalytic materials of zinc-air batteries,which are used to solve the organic pollution in water.And energy shortages.In this study,a simple solid-state reaction was carried out using silica spheres as a template and melamine as a carbon source.The photo/electrocatalysts prepared by different annealing temperatures exhibited good catalytic performance.The specific research is as follows:1.Prepare three-dimensional porous carbon nitride and study its photocatalytic degradation performance.Carbon nitride materials are considered to be one of the excellent catalytic materials for photocatalytic degradation of organic matter.However,due to the low catalytic efficiency of the simple amorphous bulk material and the unsatisfactory catalytic efficiency,it is unable to meet the daily needs,so researchers have been searching for ways to increase the photocatalytic efficiency of carbon nitride materials.In this study,the precursor and the template were simply mixed and sintered by the hard template method,and after the template was removed,a regular porous honeycomb carbon nitride material was prepared.Experiments show that the porous carbon nitride material has high catalytic efficiency for methylene blue(MB)and methyl orange(MO)target degradant solutions,and can achieve effective degradation at low concentrations.2.Honeycomb porous carbon skeleton bridges N--doped carbon nanotubes embedded in Fe3C/Fe nanoparticles as a dual-function electrocatalyst(PC-NCNT-Fe3C/Fe)for reversible zinc-air batteries.In this study,through the simple combination of pyrolysis and etching,using melamine and glucose as precursors,a special-shaped zinc-air battery bifunctional catalyst material with tube-hole cross-linking was prepared,which combined the pore-filling materials.And the advantages of nanotube materials to achieve higher catalytic efficiency.The experimental test results coincided with the conjecture.The ORR and OER performance of the material exceeded that of the other control groups.Experiments have shown that the metal-supported metal catalyst of the pore-packed structure and the tubular structure has better electrocatalytic performance than the simple porous honeycomb material and carbon nanotubes.The rechargeable zinc air battery prepared by the PC-NCNT-Fe3C/Fe material exhibits excellent charge-discharge cycle stability and relatively high efficiency conversion performance.This study provides a new preparation idea for the search for environmentally friendly nanocatalysts.The porous carbon nitride material prepared by the hard template method exhibits excellent catalytic efficiency and long-term stability after long-term efficiency and stability tests..It has the ability to completely degrade methyl orange and methylene blue organic pollutants,especially its excellent working condition in low concentration pollutant environment,which provides a new idea for solving low concentration environmental degradation.At the same time,the PC-NCNT-Fe3C/Fe material prepared by a similar method exhibited an electrocatalytic performance comparable to that of the noble metal,and the zinc-air battery based on the catalyst assembly exhibited excellent stability.The preparation of these two materials provides a new strategy for the synthesis of porous material photocatalysts.