Open Access

Preparation of FeCl3 Catalytic Films Using Dip Dry Method for the Growth of Carbon Nanotubes

Mohan Lal, mohan.lal@sspl.drdo.in
Solid State Physics Laboratory, DRDO, New Delhi, India. Bharat Bhushan Sharma, mohan.lal@sspl.drdo.in
D.A.V.Institute of Engineering and Technology, Jalandhar, Punjap, India. Poornendu Chaturvedi, mohan.lal@sspl.drdo.in
Solid State Physics Laboratory, DRDO, New Delhi, India. PikaJha, mohan.lal@sspl.drdo.in
Solid State Physics Laboratory, DRDO, New Delhi, India. Jaswant Singh Rawat, mohan.lal@sspl.drdo.in
Solid State Physics Laboratory, DRDO, New Delhi, India. Partap Kumar Chaudhury mohan.lal@sspl.drdo.in
Solid State Physics Laboratory, DRDO, New Delhi, India.

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Abstract

Catalytic films of FeCl₃ were coated on Si using simple and highly scalable technique of dip drying of silicon in aqueous FeCl₃ solution. The catalyst coated samples were pretreated at 850 ^oC to reduce the deposited FeCl₃ into iron nanoparticles. The size distribution of nanoparticles was found to be strongly dependent on initial concentration of FeCl₃ in aqueous solution. The catalytic activity of nanoparticles was ascertained by growthof carbon nanotubes using Chemical Vapour Deposition. The C₂H₂was used as the carbon precursed along with the carrier gas of H₂ and NH₃ .Characterization of the grown CNT revealed the direct relationship between the catalytic concentration and the diameter of carbon nanotubes.

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