Sains Malaysiana 40(3)(2011): 197–201

 

Effect of Synthesis Condition on the Growth of SWCNTs via Catalytic Chemical Vapour Deposition

(Kesan Keadaan Sintesis untuk Tumbesaran Tiub Nanokarbon Dinding Tunggal Melalui Pemendapan Wap Kimia Bermangkin)

 

Setareh Monshi Toussi

Advanced Materials & Nanotechnology Laboratory

Institute of Advanced Technology, Universiti Putra Malaysia

Serdang 43400, Selangor D.E., Malaysia

 

A. Fakhru’L-Razi*, Luqman Chuah A. & A.R. Suraya

Department of Chemical and Environmental Engineering

Universiti Putra Malaysia, Serdang 43400, Selangor D.E., Malaysia

 

Diserahkan: 20 Julai 2010 / Diterima: 3 September 2010

 

ABSTRACT

 

Single-walled carbon nanotubes (SWCNTs) were synthesized by catalytic chemical vapor deposition (CCVD) of ethanol (C2H5OH) over Fe-Mo-MgO catalyst by using argon as a carrier gas. The reaction conditions are important factors that influence the yield and quality of carbon nanotubes. The effects of temperature and flow rate of carrier gas were investigated to increase the yield of carbon nanotubes. The synthesized carbon nanotubes were characterized by scanning electron microscopy, transmission electron microscopy, X-Ray diffraction and thermo-gravimetric analysis. The results showed that the growth of carbon nanotubes wass effectively influenced by the reaction ambience and the synthesis condition. The temperature and flow rate of carrier gas played a key role in the yield and quality of synthesized CNTs. The estimated yield of synthesized carbon nanotubes was almost over 70%.

 

Keywords: Carbon nanotubes (CNTs); catalytic chemical vapor deposition (CCVD); Fe-Mo-MgO catalyst; synthesis; yield

 

ABSTRAK

 

Tiub nanokarbon dinding tunggal (SWCNTs) telah disintesis melalui pemendapan wap kimia bermangkin etanol (C2H5OH) di atas pemangkin Fe-Mo-MgO menggunakan argon sebagai gas pembawa. Keadaan tindak balas adalah faktor penting yang mempengaruhi hasil dan kualiti tiub nanokarbon. Kesan suhu dan kadar aliran gas pembawa telah dikaji untuk meningkatkan hasil tiub nanokarbon. Tiub nanokarbon yang disintesis telah dicirikan melalui mikroskop elektron imbasan, mikroskop elektron transmisi, pembelauan sinar-X dan analisis termo-gravimetrik. Keputusan menunjukkan bahawa pertumbuhan tiub nanokarbon dipengaruhi oleh ambien tindak balas dan keadaan sintesis. Suhu dan kadar aliran gas pembawa memainkan peranan utama dalam hasil dan kualiti tiub nanokarbon yang disintesis. Anggaran hasil tiub nano karbon yang disintesis hampir melebihi 70%.

 

Kata kunci: Endapan wap kimia bermangkin (CCVD); hasil; mangkin Fe-Mo-MgO; sintesis; tiub nanokarbon (CNTs)

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*Pengarang untuk surat-menyurat; email: fakhrul@eng.upm.edu.my