Method for preparing magnetic metal particle modified carbon nanotube
A technology of carbon nanotubes and magnetic metals, which is applied in the field of preparation of carbon nanotubes modified by magnetic metal particles, can solve the problems of reducing material properties and destroying carbon tube structures
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[0020] Example 1
[0021] The carrier gas hydrogen flow rate is 1.6cm / s, weigh 5 grams of the mixture of ferrocene and sulfur powder, where the weight ratio of ferrocene to sulfur powder is 100:1, its volatilization temperature is 200℃, and the reaction zone temperature is 1100℃ , The heating rate is 20°C / min, the temperature is kept for 5 minutes, and the final product is black powder.
[0022] scanning( figure 1 ) And transmission electron microscope ( figure 2 ) And magnetic analysis ( image 3 ) Indicates that the product is carbon nanotubes modified with magnetic iron particles. In this embodiment, the outer diameter of the carbon nanotube is 50-120nm, the inner diameter is 20-60nm, and the average diameter of the iron particles is ~10nm; the product is thermally analyzed in the air ( Figure 4 ) Shows that the content of metal particles in the product is ~32wt%.
Example Embodiment
[0023] Example 2
[0024] The carrier gas argon flow rate is 1.6cm / s, weigh 5 grams of the mixture of ferrocene and sulfur powder, where the weight ratio of ferrocene to sulfur powder is 100:1, its volatilization temperature is 250℃, and the reaction zone temperature is 1100 ℃, the heating rate is 30℃ / min, and the temperature is kept for 5 minutes. The final product is black powder.
[0025] Scanning, transmission electron microscopy and magnetic analysis showed that the product was carbon nanotubes modified with magnetic iron particles. In this embodiment, the outer diameter of the carbon nanotube is 70-160nm, the inner diameter is 40-90nm, and the average diameter of the iron particles is ~5nm; thermal analysis shows that the content of metal particles in the product is ~30wt%.
Example Embodiment
[0026] Example 3
[0027] The carrier gas argon flow rate is 1.6cm / s, weigh 5 grams of the mixture of ferrocene and sulfur powder, where the weight ratio of ferrocene and sulfur powder is 50:1, its volatilization temperature is 150℃, and the reaction zone temperature is 900 ℃, the heating rate is 40℃ / min, and the temperature is kept for 5 min. The final product is black powder.
[0028] Scanning, transmission electron microscopy and magnetic analysis showed that the product was carbon nanotubes modified with magnetic iron particles. In this embodiment, the outer diameter of the carbon nanotube is 90-200nm, the inner diameter is 30-110nm, and the average diameter of the iron particles is ~45nm; thermal analysis shows that the content of metal particles in the product is ~40wt%.
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