| With the accelerated development of social industrialization,environmental issues have become a huge challenge for human beings' survival.The atmosphere,soil,water resources,ecological balance and outer space are constantly being destroyed.Among them,the pollution of water bodies has caused the death of a large amount of animals and plants,which seriously endangers the health of human beings.How to deal with the pollutants enriched in water is of great significance.Therefore,the development of new green environmentally friendly materials is very important to the dealing of environmental issues.Since the advent of porous carbon materials,due to their huge specific surface area,high pore volume,adjustable pore structure,good chemical and thermal stability,low cost,non-toxic and other characteristics,they have attracted extensive attention from researchers and have been widely used in various fields.Researchers have attempted to carry out chemical and physical modification studies,among which magnetic porous carbon materials are one of the hottest spots that researchers have paid attention to.The porous carbon material is magnetically compounded,and the synthesized magnetic porous carbon material not only maintains the original superiority but also compensates for the single-phase defects of the new magnetic porous carbon material.Because of its magnetic and porous characteristics,it can be directional transmission and rapid separation under the action of external magnetic field.In this paper,a simple method is used to directly carbonize the metal organic framework to obtain magnetic porous carbon materials,and at the same time explore the adsorption behavior of the materials as adsorbents for the adsorption of anionic basic dye magenta and sulfonamide antibiotics.The main tasks as follows: 1.Direct carbonization MOF method is used to carbonize the non-toxic iron-based metal-organic framework MIL-100(Fe)with an octahedral cubic structure at a high temperature of 700°C to obtain magnetic porous carbon materials(MPCs).The experiment found that the product formed by carbonization at high temperature completely collapsed the original octahedral structure,the surface became wrinkled and loose,and many pores with pore sizes ranging from ten to eighty nanometers appeared,and a large amount of magnetic particles were uniformly attached.Nano particles.2.Prepare magnetic porous carbon materials(MPCs),and study their adsorption and catalytic properties.Magenta was selected as the representative of anionic dye,and its adsorption behavior and catalytic degradation of magenta were explored.The adsorption behavior of magenta by MPCs is more in line with the quasi-second order kinetic equation.The influence of temperature on adsorption was discussed later.The adsorption amount of magenta to magenta increased with increasing temperature.It was found that the adsorption process was more in line with the Freundlich isothermal equation.The material has a high porosity and surface area,while-OH groups and Fe clusters on the surface of the adsorbent firmly fix dye molecules through hydrogen bonding and coordination.It can be seen through repetitive experiments that it is a green,fast-separating,reusable and efficient adsorbent.It was found through experiments that MPC also has a good ability to degrade magenta dyes.Within 36 minutes,magenta was adsorbed and degraded up to 100%.Therefore,combining adsorption and catalytic processes,we can develop an effective strategy for removing dyes from water samples.3.The magnetic porous carbon material MPCs was used as the adsorbent for magnetic solid phase extraction,combined with high performance liquid chromatography,to detect SAs in samples.In the experiment,we explored the effects of eluent type,eluent volume,adsorbent mass,extraction time,and elution time on adsorption efficiency and elution efficiency. |
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