Study On The Synthesis And Properties Of SnS₂-based Composite Materials

With further miniaturization of electronic devices, people need the electronic devices which are in the integration of data processing and storage, so diluted magnetic semiconductors have entered the spotlight. The applications and research of diluted magnetic semiconductors are constantly expanding, of which have abroad application prospects in optical, electrical, magnetic and other new devices and have an important role of information and automation of industrial development.According to different molar ratio, SnCl4？5H2O and CS(NH2)2as reactants, the Co2+doping in the reaction mixture, which were prepared in different shapes SnS2and Co2+doped SnS2dilute magnetic materials by hydrothermal synthesis; The prepared SnS2and Co2+doped SnS2dilute magnetic semiconductor were oxidized SnO2and Co2+doped SnO2dilute magnetic semiconductors at800℃. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and vibration sample magnetometer (VSM) were used to characterize these composite materials. Co2+doped SnS2dilute magnetic semiconductors have very weak magnetic property at room temperature and show ferromagnetic under5K; Co2+doped SnO2dilute magnetic semiconductors are a weak ferromagnetism at room temperature, which display paramagnetism property under low temperature5K.The graphene oxide (GO) mixed with different morphologies SnS2according to different mass ratio, which synthesized SnS2/GO composite materials by hydrothermal method. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and Uv-Vis were used to characterize SnS2/GO composite materials. The results showed that, photocatalytic efficiency of SnS2/GO composite materials is much higher than SnS2under visible light, raw material mass ratio of GO:SnS2(Flake, flower) with1:40,1:60, photocatalytic activity of which was the most efficient, the degradation percentage of methyl orange is80%in100minutes.