Carbon Nanotubes Grown over Fe-Mo-Mg-O Composite Catalysts

• Published in: Metals and materials international Vol. 14; no. 3; pp. 385 - 390
• Main Authors: Chen, Yanfang, Riu, Doh-Hyung, Lim, Yun-Soo
• Format: Journal Article
• Language: English
• Published: Seoul 대한금속재료학회 01.06.2008; The Korean Institute of Metals and Materials; Springer Nature B.V; 대한금속·재료학회
• Subjects: Carbon; Carbon nanotubes; Catalysis; catalyst chemical vapor deposition; Catalysts; Characterization and Evaluation of Materials; Chemical vapor deposition; Chemistry and Materials Science; Citric acid; composite catalyst; Engineering Thermodynamics; Heat and Mass Transfer; Iron; Machines; Magnesium oxide; Magnetic Materials; Magnetism; Manufacturing; Materials Science; Metallic Materials; Moles; Nanotubes; Processes; Solid Mechanics; 재료공학; carbon nanotubes; composite catalyst; catalyst chemical vapor deposition
• ISSN: 1598-9623; 2005-4149
• DOI: 10.3365/met.mat.2008.06.385

High quality, high yield carbon nanotubes were synthesized on a composite catalyst using catalytic chemical vapor deposition. The composite catalysts Fe/MgO, Mo/MgO and (Fe, Mo)/ MgO, prepared via the solgel method using citric acid as fuel, were investigated for the production of CNTs. Only the (Fe, Mo)/MgO catalyst could support CNTs growth with high yield in this study. The different mole ratios between Fe, Mo, and Mg resulted in changes in product structure, diameter size, and yield. Decreasing the Fe concentration reduces the structural defects, and by increasing the Mo concentration, the yields of CNTs clearly increase.