Influence of Reaction Temperature on Yields of Multi-Walled CNTs Synthesized with Fe-Co/Al₂O₃ Bimetallic Nanocatalyst

Abstract:

Aluminum-supported iron and cobalt (Fe-Co/Al₂O₃) bimetallic nano-sized catalyst has been synthesized by the sol-gel method. The average diameter of the Fe-Co/Al₂O­₃ catalyst was measured to be around 7 nm from SEM images. EDX measurements revealed that Fe-Co/Al₂O­₃ consists of 59.98% of Al, 20.00% of Fe, and 20.02% of Co by atomic weight. Multi-walled carbon nanotubes (MWCNT) were prepared with as-synthesized nanocatalyst from a commercial butane gas by the CCVD method at different reaction temperatures. TEM and XRD measurements revealed that Fe-Co/Al₂O₃ bimetallic nano-sized catalyst is beneficial to fabricating MWCNTs by the CCVD method. The highest yield of MWCNTs was obtained at 690°C.

• Periodical: Materials Science Forum (Volume 1083)
• Pages: 89-95
• DOI: https://doi.org/10.4028/p-09ls7g
• Online since: April 2023
• Authors: Enkhtor Sukhbaatar, Nomin Erdene Battulga, Galbadrakh Ragchaa, Tsog Ochir Tsendsuren, Rentsenmyadag Dashzeveg, Munkhtsetseg Sambuu, Uuriintuya Dembereldorj, Erdene-Ochir Ganbold*
• Keywords: Chemical Vapor Deposition, Commercial Butane Gas, Fe-Co/Al₂O₃ Bimetallic Nanocatalyst, MWCNTs, Reaction Temperature

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