Preparation Of MIL-125 (TI) And Modified MIL-125 (TI) And Their Catalytic Properties

Metal-organic frameworks?MOFs?including organic connections and metal oxide clusters has crystalline structures,large surface area,well-defined porosity and fascinating electrical,optical and catalytic properties,MOFs have been proved to have a variety of potential applications,such as heterogeneous catalysis,gas storage and separation,sensor devices and drug delivery/release.MOFs metal clusters are inorganic Semiconductor quantum entities,with the band gap width from 1.0 eV to 5.5 eV.Solar energy conversion and photo-generated electrons due to the MOFs low separation efficiency,its photocatalytic properties cannot be compared to inorganic semiconductors.The MIL-125?Ti?nitride magnetic properties and magnetic properties of graphene and carbon combine to form composite materials.To play a synergistic role in improving photocatalytic properties and magnetic,quick separation,to achieve reuse.?1?Prepared by reflux condensation got 8 kinds of nano-magnetic balls modification of magnetic properties of graphene RGO@MFe₂O₄(M=Fe²⁺,Mn²⁺,Zn²⁺,Co²⁺,Ni²⁺,Mg²⁺,Ca²⁺ and Cu²⁺)and 8 kinds of nano-magnetic balls modification of magnetic properties of carbon nitride g-C₃N₄@MFe₂O₄(M=Mn²⁺,Zn²⁺,Co²⁺,Ni²⁺,Mg²⁺,Ca²⁺ and Cu²⁺)?2?MIL-125?Ti?nanoparticles were prpared by thermal solvent.And then through reflux condensation method MIL-125?Ti?nanoparticles were successfully loaded onto the surface of 8 kinds of nano-magnetic balls modification of magnetic properties of graphene and 8 modification of magnetic properties of carbon nitride nano-magnetic ball.Then the 8 kinds of ternary composite photocatalyst of RGO@MFe₂O₄@MIL-125?Ti?and g-C₃N₄@MFe₂O₄@MIL-125?Ti?NPs(M=Fe²⁺,Mn²⁺,Zn²⁺,Co²⁺,Ni²⁺,Mg²⁺,Ca²⁺ and Cu²⁺)were obtained.The results show that the size of MFe₂O₄ nanospheres is between 200nm and 400nm,the size of MIL-125?Ti?nanoparticles is about 100nm,and is evenly distributed on graphene and carbon nitride nanoplates.Through the experiment of photocatalytic degradation of Rhodamine B and 2,4-dichlorophenol,Find RGO@ZnFe₂O₄@MIL-125?Ti?NPs photo-degradation of composite 2,4-dichlorophenol efficiency and MIL-125?Ti?nanoparticles significantly improved.g-C₃N₄@CoFe₂O₄@MIL-125?Ti?NPs Composite efficiency of photocatalytic degradation of Rhodamine B and MIL-125?Ti?nanop articles significantly higher than MIL-125?Ti?.In addition,RGO@ZnFe₂O₄@MIL-125?Ti?and g-C₃N₄@CoFe₂O₄@MIL-125?Ti?NPs have magnetic properties,which are easy to be recycled and reused in the process of re-cycling...