Synthesis Of Magnetic Graphene Oxide And Study Absorb Ability Pb²⁺ Of The Water

Heavy metal pollution,which includes mercury,chromium,lead,copper and other metal ions,is a common phenomenon in the society.The presence of heavy metals in water is in the form of ions entering the human body will do greater harm to people's health.When people drink water containing heavy metals,the body will undergo pathological changes,which have a great harm to people's health.In recent years,many cases of lead ion pollution have occurred.There are many ways to deal with heavy metal pollution in water.Adsorption is the most common way to deal with water pollution.Traditional adsorbents include carbon nanotubes and activated carbon.The traditional adsorbent has low adsorption capacity,poor adsorption effect,and is difficult to separate and recover from water system.Graphene oxide has very large specific surface area and a large number of oxygen-containing functional groups,which has strong adsorption capability to heavy metal ions.But adsorbent separation technology is always a difficult problem.Magnetite having strong magnetic properties can solve the adsorbent separation problem by magnetic separation.Magnetic graphene oxide has been successfully synthesized by hydrothermal method.XRD,FTIR,TEM and Zeta were used to characterize the structures and properties of magnetic graphene oxide.The results showed that the magnetic graphite oxide adsorbent was successfully synthesized.Magnetic graphene oxide composite material was prepared and used for the adsorbent for the Pb²⁺adsorption test in the water.The influence of reaction time,p H value and adsorbent content on Pb²⁺ adsorption were investigated.The results show that the magnetic graphene oxide is a very good adsorbent for Pb²⁺ adsorption.Magnetic separation experiments show that the adsorbent can be easily separated.In order to investigate its regeneration and recycling type,we also made common adsorption experiments of carbon nanotubes on lead ions together with analytical cycle experiments for comparison.The results show that the adsorption capacity of the magnetic graphene is much higher than that of the carbon nanotube adsorbent,and the magnetic oxide graphene has good regeneration property and can be recycled for many times.