Abstract
Carbon Nano Materials (CNM) from biogenic carbohydrate rich non-edible precursors such as Syzygium cumini (Jamun), Tamarindus indica (Imli) and Litchi chinensis (Imli) seeds were synthesized by chemical vapour deposition method (CVD). Parameters were optimized by Taguchi optimization method, four parameters such as precursor, temperature, carrier gas and duration and three levels S. cumini, T. indica and L. chinensis as a precursor, Argon (Ar), Nitrogen (N2) and Hydrogen (H2) as a carrier gas, 1 hour (hr), 2 hours and 3 hours (hrs) for duration of pyrolysis, 800oC, 900oC and 1000oC for temperature were selected. In the present work, impact of precursor is 35.84% which is the most effective factor than temperature (29.59%) and other parameters such as duration (19.50%) and the least effective factor is carrier gas (15.07%). Impact of parameter on the yield which described by the deviation of signal to noise (S/N) ratio. The result of deviation of S/N ratio shows T. indica seed (precursor), 9000C (temperature), 2 hr (duration) and Ar (carrier gas) are the best parameters. The morphology of CNM is studied by SEM characterization and the nature of synthesized CNM by RAMAN spectroscopy.
Highlights
Using petroleum derived materials as precursor, Carbon nano materials (CNMs) are usually synthesized
Efforts are being made to establish the conditions for growing multi walled carbon nanotube (MWCNTs), singlewalled carbon nano tubes (SWCNTs) and vertically aligned MWCNTs using suitable catalytic support by a simple and inexpensive chemical vapour deposition (CVD) techniques
For the synthesis of CNM, the seeds of S. cumini, T. indica and L. chinensis were purchased from local market, CVD furnace was used for pyrolysis.CVD method was used for Pyrolysis of these three type of seeds
Summary
Using petroleum derived materials as precursor, Carbon nano materials (CNMs) are usually synthesized. There is the need to look for other sources of precursors to synthesize CNMs. While following the principle of Green Chemistry, it is desirable that the raw material for any industrial process must be renewable rather than the depleting natural resources. While following the principle of Green Chemistry, it is desirable that the raw material for any industrial process must be renewable rather than the depleting natural resources It is one of the prime requirements to explore regenerative materials for synthesis of CNM, with high efficiency. There are different plant derivatives as well as plant parts which have successfully been used for the synthesis of carbon nano materials under pyrolytic conditions (5-9) They synthesize CNM by a modified tradition sources from vegetable sources [10]-[12]. There are several reports with regard to the carbon nano materials being derived from the seeds including Grapes seeds, T. indica, Soybean, Anacardium, Ritha and Castor [14]-[17]
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