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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
Received: 20 July 2010 / Accepted: 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 was 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 nano karbon 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 nanokarbon 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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*Corresponding author; email: fakhrul@eng.upm.edu.my
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