Figure 1
From: Structural Transformation of Biochar Black Carbon by C60 Superstructure: Environmental Implications
HAADF STEM image and EDS analysis of 700 °C pecan shell biochar. Spectrum 1 acquired from the region within yellow box 1 shows carbon as the only element. Spectrum 2 taken from the bright area within yellow box 2 shows the presence of Ca, C and O. Cu peaks in both spectra are from the TEM grid.
