Synthesis of carbogenic nanosphere from peanut skin

The primary waste material of 34.43 million metric tons of peanut produced per year in the world is peanut skin. This peanut skin is carbonized at 700 degrees C under nitrogen atmosphere followed by oxidative treatment produce water soluble carbogenic nano spheres of 10-40 nm in size. Such synthesized water soluble carbogenic nanospheres are fluorescent in nature over a range in the visible light without further surface passivation. Such carbogenic nanospheres have promising applications in bio-imaging and drug delivery and in material science. (C) 2012 Elsevier B.V. All rights reserved.