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Raw soot materials containing pristine MWNTs synthesized by arc discharge (Bucky tube, Aldrich) were first calcined in air at 500 8C. This is a mild condition known to remove impurities and etch/oxidize MWNTs at defect sites and ends without oxidizing the pristine sidewalls of the nanotubes¡£ ÎÄÏ×ÖÐÕâÑù×Óд£¬ÊÇÔõô»ØÊ£¿À´×ÔNature. ¾ÍËãÊÇÔÓÖÊÁôÏ£¬CNTÊDz»ÊÇÈ«±ä³ÉCO2ÁË£¿ |
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