Controllable preparation method for silicideb nanometer belts/nanometer sheets
A silicide and nanobelt technology, applied in metal silicides, chemical instruments and methods, from chemically reactive gases, etc., can solve the problems of inability to synthesize nanobelt silicides, expensive, and complicated preparation methods.
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Embodiment 1
[0024] The experimental device is attached figure 1 . Put a foamed nickel sheet with a size of 10 (length) × 10 (width) × 1 (thickness) mm at the center of the heating furnace, and heat it at a rate of 10K / min at N 2 Under protection, the heating furnace was heated to 900°C, and then heated with H 2 SiHCl as carrier gas 3 Introduced into the heating furnace, while another H 2 It is also introduced into the furnace as a diluent gas. Among them, H 2 The flow rate of diluent gas is 85mL / min, H 2 The flow rate of the carrier gas is 25mL / min. After reacting for 30min, the heating furnace was in N 2 Natural cooling under protection. The main chemical reaction formula of this embodiment is as follows: SiHCl 3 +H 2 →Si+3HCl and ySi+xNi→Ni x Si y . Ni in this example x Si y can be Ni 3 Si, Ni 5 Si 2 、Ni 2 Si, Ni 3 Si 2 , NiSi or NiSi 2 Wait for the mixture.
[0025] The resulting product is a nickel silicide nanoribbon, and its morphology is as attached figure ...
Embodiment 2
[0027] The experimental device is attached figure 1 . Put a nickel foil with a size of 10 (length) × 10 (width) × 0.16 (thickness) mm at the center of the heating furnace, and at a rate of 10K / min in N 2 Under protection, the heating furnace was heated up to 900 °C, and then heated with H 2 SiHCl as carrier gas 3 Introduced into the heating furnace, while another H 2 It is also introduced into the furnace as a diluent gas. Among them, H 2 The flow rate of diluent gas is 50mL / min, H 2 The flow rate of the carrier gas is 25mL / min. After reacting for 30min, the heating furnace was in N 2 Natural cooling under protection. The main chemical reaction formula of this embodiment is as follows: SiHCl 3 +H 2 →Si+3HCl and ySi+xNi→Ni x Si y . Ni in this example x Si y can be Ni 3 Si, Ni 5 Si 2、Ni 2 Si, Ni 3 Si 2 , NiSi or NiSi 2 Wait for the mixture.
[0028] The resulting product is a nickel silicide nanosheet, and its morphology is as attached image 3 shown. In...
Embodiment 3
[0030] The experimental device is attached figure 1 . Put a titanium foil with a dimension of 10 (length) × 10 (width) × 0.27 (thickness) mm at the center of the heating furnace, and put it under N at a rate of 10K / min. 2 Under protection, the heating furnace was heated to 900°C, and then heated with H 2 SiHCl as carrier gas 3 Introduced into the heating furnace, while another H 2 It is also introduced into the furnace as a diluent gas. Among them, H 2 The flow rate of diluent gas is 80mL / min, H 2 The flow rate of the carrier gas is 20mL / min. After reacting for 30min, the heating furnace was in N 2 Natural cooling under protection. The main chemical reaction formula of this embodiment is as follows: SiHCl 3 +H 2 →Si+3HCl and ySi+xTi→Ti x Si y . This embodiment Ti x Si y Can be Ti 3 Si, Ti 5 Si 4 , TiSi or TiSi 2 Wait for the mixture.
[0031] The obtained product is titanium silicide nanoribbon, and its morphology is as attached Figure 4 shown. In this e...
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Abstract
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