| The core-shell structure composite nano-materials have a series of special properties of mechanics, electricity, magnetism, biological medicine and so on. Therefore they have potential application on medicine, catalysis, stealth materials, display materials, battery electrode materials, sensing materials and other industries. And the hydrothermal method is simple, facile, easy to realize the industrialization of the products, and different morphologies can be obtained by adjusting the process parameters. Thus it has become one of the important methods in the preparation of core-shell structure nano-materials.SnS2nano-materials with different morphologies had been prepared by with surfactant-assisted hydrothermal method. The influence of preparation conditions on the morphology and phase of samples was investigated in detail. The photocatalytic performance of the as-synthesized SnS2were evaluated by degrading Rhodamine B(RB), the results showed that the photocatalytic performance varied with samples of different morphologies, and the hexagonal nanoplates displayed the best photocatalytic properties. In addition SnO2nano nanoparticles, nanorods, porous nanorods were synthesized by hydrothermal method, they all showed preferable photocatalytic performance in degrading RB, and the nanoparticles have best photocatalytic properties.SnO2@SnS2core-shell structure nanoparticles, nanorods, porous nanorods were prepared by the hydrothermal method and double crucible method. The photocatalytic performance were evaluated by degrading methyl orange(MO), the results indicated that the SnO2@SnS2core-shell structure nano-materials displayed better photocatalytic performance compared with SnS2nano-materials. The thickness of shell could be controlled effectively by the reaction time and the dosge of sulfur source. These meanningful results had laid certain foundation for the further research of metal oxide@metal sulfide core-shell structure nano-materials. |
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