Although the EDS signal is weaker than the SO-CdS nanorods, it does indicate that pure CdS nanorods also includes carbon components. Peak splitting, which can be indexed to the (100), ( ), ( ), ( ), (110), and (201) crystal planes, respectively, is observed at 25.09°, 26.70°, 28.12°, 43.79°, 48.19°, and 51.32° of 2θ. This matches well with the hexagonal wurtzite phase of CdS and corresponds to the structure of CdS (JCPDS card no. 41-1049) . Due to inadequate crystallinity or a low loading concentration of carbon generated from biomass, no peak was assigned to carbon . However, the intensity of the CdS-attributed peaks (100), (101), and (110) increased as a result of the carbon added to the metal. These findings imply that carbon modified certain crystal facets to increase the crystallinity of CdS.