Preparation And Properties Of M-MoS₂ Ferrocene Functional Materials

In recent years,ferrocene derivatives have been the focus of attention,and have been widely used in medicine,antibacterial and other fields.Molybdenum disulfide(MoS₂)has been widely concerned by scholars at home and abroad because of its unique two-dimensional layered structure and outstanding performance in photoelectric field.Therefore,this paper intends to use ferrocene derivatives to functionalize MoS₂ nanomaterials and explore the conductivity and bacteriostatic properties of composite materials.In this paper,four new ferrocene Schiff base derivatives(FcL₁?FcL₄)were synthesized using four kinds of ferrocene and L-cysteine as starting materials.The effects of reaction temperature,reaction time,type and amount of catalyst and molar ratio of reaction materials on yield were discussed.The optimum reaction conditions were obtained.Meanwhile,the synthesized product was characterized by IR,~1H NMR and SEM,which proved that FcL₁?FcL₄ was successfully prepared.The conductivity and bacteriostasis of FcL₁?FcL₄ were measured.The results showed that FcL₁?FcL₄had good antibacterial activity against E.coli and S.aureus,and FcL₄ had the best antibacterial effect.When the concentration of FcL₄ was 0.5 mg/m L,the antibacterial rate of E.coli and S.aureus reached 67.38%and 94.36%respectively.The results of conductivity test show that the formation of Schiff base obviously improves the conductivity of ferrocene.In this paper,three transition metals Fe,Co and Mn were doped into MoS₂ as ions by in-situ growth method and stripping doping method.XRD and XPS results show that transition metal ions are successfully doped in MoS₂.The comparison of the two doping methods showed that the conductivity of Co doped MoS₂ prepared by in-situ growth method was the best,so it was chemically grafted with FcL₁?FcL₄ to prepare four kinds of chemical graft products,and the synthesized products were characterized by XPS,XRD and SEM.At the same time,conductivity test and bacteriostatic test were carried out.The results showed that all the four grafted materials had inhibitory effects on Staphylococcus aureus and Escherichia coli.Fcl₂-Co-MoS₂ had the highest inhibitory rate on S.aureus,and the bacteriostatic rate was 86.77%when the concentration was 0.8 mg/m L.FcL₃-Co-MoS₂ had the highest bacteriostatic rate against E.coli,which was 66.93%at 0.8 mg/m L.After grafting,the electrical conductivity of the composite increases and the electrical conductivity is improved.The addition of FcL₁?FcL₄ improved the conductivity of Co-MoS₂,which made the four grafted materials have good bacteriostatic and conductivity.