Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Synthesis of carbon nanotubes with and without catalyst particles | Rummeli et al. Nanoscale Research Letters 2011 6 303 http content 6 1 303 o Nanoscale Research Letters a SpringerOpen Journal NANO REVIEW Open Access Synthesis of carbon nanotubes with and without catalyst particles 12 1 1 3 12 Mark Hermann Rummeli Alicja Bachmatiuk Felix Borrnert Franziska Schaffel Imad Ibrahim Krzysztof Cendrowski1 4 Grazyna Simha-Martynkova5 Daniela Plachá5 Ewa Borowiak-Palen4 Gianaurelio Cuniberti2 6 and Bernd Buchner 1 Abstract The initial development of carbon nanotube synthesis revolved heavily around the use of 3d valence transition metals such as Fe Ni and Co. More recently noble metals . Au and poor metals . In Pb have been shown to also yield carbon nanotubes. In addition various ceramics and semiconductors can serve as catalytic particles suitable for tube formation and in some cases hybrid metal metal oxide systems are possible. All-carbon systems for carbon nanotube growth without any catalytic particles have also been demonstrated. These different growth systems are briefly examined in this article and serve to highlight the breadth of avenues available for carbon nanotube synthesis. Introduction The current excitement in carbon nanotubes CNTs was triggered by Sumio lijima s Nature publication in 1991 1 . At that time there was a considerable interest in developing the arc evaporation method initially discovered by Huffman and Kratschmer 2 for the production of C60 in macroscopic amounts. lijima analysed the deposit on the cathode and found macroscopic amounts of multi-walled carbon nanotubes MWNTs and facetted graphitic particles. The lack of fullerenes in the sample was unexpected. Moreover the excitement at that time in carbon nanostructures born out of the discovery of fullerenes 3 was a further favourable factor and so his publication drew significant attention. liji-ma s next step was to see if he could fill these structures with transition metals. Transition metals were mixed into the graphitic .
