Unravelling the Mechanisms Behind Mixed Catalysts for the High Yield Production of Single-Walled Carbon Nanotubes

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• 作者：Sailaja Tetali ; Mujtaba Zaka ; Ronny Schönfelder ; Alicja Bachmatiuk ; Felix Börrnert ; Imad Ibrahim ; Jarrn H. Lin ; Gianaurelio Cuniberti ; Jamie H. Warner ; Bernd Büchner ; Mark H. Rümmeli
• 刊名：ACS Nano
• 出版年：2009
• 出版时间：December 22, 2009
• 年：2009
• 卷：3
• 期：12
• 页码：3839-3844
• 全文大小：364K
• 年卷期：0
• ISSN：1936-086X

文摘

The use of mixed catalysts for the high-yield production of single-walled carbon nanotubes is well-known. The mechanisms behind the improved yield are poorly understood. In this study, we systematically explore different catalyst combinations from Ni, Co, and Mo for the synthesis of carbon nanotubes via laser evaporation. Our findings reveal that the mixing of catalysts alters the catalyst cluster size distribution, maximizing the clusters’ potential to form a hemispherical cap at nucleation and, hence, form a single-walled carbon nanotube. This process significantly improves the single-walled carbon nanotube yields.