TY - JOUR ID - 3915 TI - The Effect of Catalyst Combination Ratioon Growth of Carbon Nanotubesover Fe-Co/nanometric SiCby Chemical Vapor Deposition JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Shahi, Fatemeh AU - Akbarzadeh Pasha, Mohammad AD - AD - University of Mazandaran, Faculty of basic Science, Solid state department Y1 - 2016 PY - 2016 VL - 23 IS - 3 SP - 1517 EP - 1523 KW - CNTs KW - CVD KW - Bimetallic catalyst KW - SiC KW - Combination ratio DO - 10.24200/sci.2016.3915 N2 - Bimetallic Fe-Co catalysts supported on nanometric SiC powder were prepared by wet impregnation method and were used to catalyze CNTs from decomposition of acetylene at 850ͦC by TCVD. The effect of Fe and Co combination ratio in catalytic basis on properties of end product CNTs was investigated using XRD, SEM, TEM and Raman spectroscopy. The results revealed that iron and cobalt are in oxide and cobalt ferrite forms.The best growth of CNTs on catalyst sample with wt% Fe:Co:SiC=10:10:80 was achieved. It was observed that the ratio of Fe:Co loading in catalyst-substrate composition is an important factor which can affect the activity of catalytic basis and the characteristics of grown CNTs such as the density and average diameter. UR - https://scientiairanica.sharif.edu/article_3915.html L1 - https://scientiairanica.sharif.edu/article_3915_30a73d5d5385a48a50146da3e42acf29.pdf ER -