The Reduction Temperature Effect of Fe–Co/MgO Catalyst on Characteristics of Multi-Walled Carbon Nanotubes

• Main Authors: Paul Kim, Cheol Jin Lee
• Format: Article
• Language: English
• Published: MDPI AG 2018-08-01
• Series: Catalysts
• Subjects: CNT; metal catalyst; reduction temperature; diameter; crystallinity
• Online Access: http://www.mdpi.com/2073-4344/8/9/361

Diameters and crystallinity of multi-walled carbon nanotubes (MWCNTs) dependent on reduction temperature of the Fe–Co/MgO catalyst were investigated. MWCNTs were synthesized by catalytic chemical vapor depositing and the Fe–Co/MgO catalyst was fabricated by using a sol-gel method. According to Raman analysis, transmission electron microscopy and thermogravimetric analysis, the diameter distribution of MWCNTs was broadened with increasing reduction temperature of the Fe–Co/MgO catalyst and crystallinity was improved. The above results are attributed to an increased size and enhanced crystallinity of metal catalyst particles by increasing reduction temperature.