Figure 2
From: Structural Transformation of Biochar Black Carbon by C60 Superstructure: Environmental Implications
(a) Bright-field STEM image of 700 °C pecan shell biochar. The FFT (shown in the inset) confirms that the carbon is amorphous. (b) Higher magnification image of a) showing the porosity of the sample (dark spots). (c) Intensity profile across the dark spots (yellow arrow) suggests a pore diameter of approximately 0.39 ± 0.02 nm.
