水热法制备棒状纳米氧化铁及其在碳纳米管制备中的应用

Hydrothermal synthesis of rod-like nano Fe₂O₃ and its application in preparation of carbon nanotubes

摘要: 用水热法在不添加任何改性剂的条件下,以FeCl₃.6H₂O为原料制备出了直径在60～80nm,长度在200nm左右、均匀分散的棒状Fe₂O₃。将其应用于化学气相沉积法制备碳纳米管中,制备出了直径约30nm,长度在微米级的碳纳米管。对纳米氧化铁的形成机理及其在碳纳米管制备中的作用进行了讨论。

Abstract: Rod-like Fe₂O₃ was prepared by hydrothermal method.Its catalytic activity was investigated.XRD result shows that the nanorods are α-Fe₂O₃ crystals and SEM image shows that they are about 60-80nm in diameter and 200nm in length.Carbon nanotubes with diameter of about 30nm and micrometers in length were successgully produced by chemical vapor deposition method using rod-like Fe₂O₃ as catalyst.Formation mechanism of rod-like nano Fe₂O₃ and its effect in preparation of carbon nanotubes were discussed.