This special project investigates the up-cycling of hemp waste from the agricultural sector into carbon nanotubes by chemical vapor deposition (CVD) using iron particle as catalyst and carbon-bearing gases from pyrolysis of hemp hurd as carbon source. The effect of temperature range of pyrolysis of hemp hurd (T Pyrolysis) and the temperature of CVD process (TCVD) on amount and physical properties of grown carbon nanotube were investigated. Raman spectroscopy analysis of synthesized were investigated. Raman spectroscopy analysis of synthesized sample showed that
the samples were carbon-based structure with varying ratio of G peak intensity to D peak intensity (IG /ID) in each temperature range. However, radial breathing mode (RBM) which is the characteristic of carbon nanotubes was not detected because the overall signal was quite weak and available amount of sample was quite limited. From scanning electron microscope image, straight tubes were rarely observed. Most observed structures resemble highly tangled tubes or graphene roses. Possible methods to obtain more straight tubes are controlling the distribution of catalyst particles and selecting pyrolysis temperature to obtain suitable amount
of carbon-bearing gas.

Keywords: Hemp Hurd, Carbon Nanotube, Metal Catalyst, Chemical vapor deposition