A layered ws2 two-dimensional nanomaterial with complex helical structure and its preparation method
A technology of two-dimensional nanomaterials and helical structures, which is applied in the direction of nanotechnology, nanotechnology, and nanotechnology for materials and surface science, can solve the problems of inability to synthesize helical structures with different shapes, and achieve filling effects and process technology simple effect
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Embodiment 1
[0076] Take SiO 2 The / Si sheet is used as the substrate, cut into 10mm×40mm size, ultrasonically washed in acetone and ethanol solutions for 15min, and taken out and dried in an oven at 60°C. Take a certain amount of WS 2 The powder is placed in a porcelain boat and placed in the center of the heating furnace in the quartz tube. SiO 2 The substrate faces up, and the substrate is placed in the heating furnace at a position 13 cm away from the heating center on the right side. Then, a high-purity Ar inert gas with a flow rate of 120 sccm was introduced to exhaust the air and oxygen in the quartz tube. The heating furnace was heated to 1150°C within 35 minutes (i.e. loaded with WS 2 The heating temperature of the powder porcelain boat is 1150°C), at this time SiO 2 The heating temperature of the substrate is 550-650° C., and the temperature is kept constant for 30 minutes. After the reaction is completed, the heating furnace is naturally cooled to room temperature. Take th...
Embodiment 2
[0078] Take SiO 2 The / Si sheet is used as the substrate, cut into 10mm×40mm size, ultrasonically washed in acetone and ethanol solutions for 15min, and taken out and dried in an oven at 60°C. Take a certain amount of WS 2 The powder is placed in a porcelain boat and placed in the center of the heating furnace in the quartz tube. SiO 2 The substrate faces up, and the substrate is placed in the heating furnace at a position 13 cm away from the heating center on the right side. Then pass high-purity Ar inert gas with a flow rate of 20 sccm to exhaust the air and oxygen in the quartz tube. The heating furnace was heated to 1150°C within 35 minutes (i.e. loaded with WS 2 The heating temperature of the powder porcelain boat is 1150°C), at this time SiO 2 The heating temperature of the substrate is 550-650° C., and the temperature is kept constant for 30 minutes. After the reaction is completed, the heating furnace is naturally cooled to room temperature. Take the SiO near the...
Embodiment 3
[0080] Take SiO 2 The / Si sheet is used as the substrate, cut into 10mm×40mm size, ultrasonically washed in acetone and ethanol solutions for 15min, and taken out and dried in an oven at 60°C. Take a certain amount of WS 2 The powder is placed in a porcelain boat and placed in the center of the heating furnace in the quartz tube. SiO 2 The substrate faces up, and the substrate is placed in the heating furnace at a position 13 cm away from the heating center on the right side. Then pass high-purity Ar inert gas with a flow rate of 60 sccm to exhaust the air and oxygen in the quartz tube. The furnace was heated to 1050°C within 35 minutes (i.e. loaded with WS 2 The heating temperature of the powder porcelain boat is 1050°C), at this time the SiO 2 The heating temperature of the substrate is 550-650° C., and the temperature is kept constant for 30 minutes. After the reaction is completed, the heating furnace is naturally cooled to room temperature. Take the SiO near the low...
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