Paper Title
Purification of Carbon Nanotubes Synthesized from Fermented Tapioca for in Vitro Cells Study

Abstract
These low-cost carbon nanotubes (CNTs) was synthesized from fermented tapioca. This precursors is a easily obtained from plant source, economical and more environment friendly compared to fossil source precursor that have to go through many technology process before can be used. In the present study, precursor source used to synthesis CNTs from fermented tapioca. The PurifiedCNTs were characterized by transmission electron microscopy (TEM), Raman spectroscopy, and thermogravimetric analysis (TGA). The TEM image captured CNTs size from fermented tapioca less than 50 nm. Raman spectroscopy reveal D and G peak at 1480, 1583 and 1227, 1565 cm-1, as-synthesized CNTs compared to purified CNTs, respectively. The thermogravimetric analysis reveal the decomposed temperature at 450 and 800 ºC for as-synthesized and purified CNTs, respectively. Keywords - Fermented Tapioca, Carbon Nanotubes, HNO3:H2SO4 Purification, Raman Spectroscopy.