采用低能量离子束对碳纳米管进行轰击. 扫描电子显微镜测试表明,离子束轰击可以方便地去除碳纳米管中的杂质,拉曼光谱结果显示离子束轰击没有对碳纳米管造成明显损伤. 以尿素作为杂质添加到碳纳米管中,经离子束轰击后发现尿素消失,说明离子束对杂质的去除机制为其溅射效应.
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