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[Category : - CHEMISTRY]
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Novel carbon nanostructures are now being used in numerous potential applications namely nanomechanical devices, nanocomposites with unique properties, nanoconductors, field display, storage of natural gas and hydrogen. This brings up development of different methods for synthesising carbon nanomaterials. The widely used methods are arc discharges, pulsed laser vaporization and chemical vapor deposition. These synthesis techniques generally require the introduction of catalyst to influence growth and morphology of generated nanostructures.

Although different methods for synthesising carbon nanostructures are available, research is still going on for finding the cheap and easy method for commercial preparation of different carbon nanostructures with controlled morphology and high purity. The carbon soot obtained from burning of vegetable oils and animal based oils by using traditional method is found to contain carbon nanostructures including single-walled carbon nanotubes, multi- walled carbon nanotubes and carbon nanofibers. Carbon soot obtained by burning oils has been used as 'kajal' since ancient times.

Kajal is easy-to-make by traditional method of flame deposition. It has been found to contain carbon nanomaterials. Thus, synthesis of carbon nanostructures from vegetable oil using flame deposition method is studied in detail in regard to find a cheap source and easy method. SUMMARY OF THE INVENTION

The object of this invention is to explore the traditional method of making kajal systematically to obtain scientific insight to the mechanism. Vegetable oil i.e., Mustard oil is used to synthesize the soot by flame deposition and the effect of substrate used for depositing the soot on the morphology of the carbon deposits is examined.

Vegetable oil is used to synthesize the soot by flame deposition on different substrate to obtain water soluble carbon nanoparticles in size range of 40-60 nm. The process is rapid, scalable and doesn't require catalyst, can be used to synthesize carbon nanoparticles in a matter of minutes.

Priority Date : 26.11.2012 [3622/DEL/2012]
International filing : PCT/IN2013/000623 dated 15/10/2013
International Publication by WIPO : WO/2014/080418 on 15.05.2014
IPC classification:B82B3/00, 23C4/00, C01B31/02, B82/B300, C23C4/00, C01B31/02

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