Figure 4 | Scientific Reports

Figure 4

From: Activated Carbons from Hydrochars Prepared in Milk

Figure 4

Powder X-ray diffraction patterns of selected activated carbons (ACs). Corn husk (CH) and liquid (water (W) or milk (M)) were heated in a sealed autoclave at 220 °C to form a hydrothermal carbon that was heated under N2 to 800 °C, then held at that temperature under CO2 for 20 h. Symbols above show the positions of the most intense peaks for relevant inorganic phases. The pattern for AC-CH-M-N2CO2-20 has been vertically offset for clarity. Diffraction patterns for all ACs are shown in Supplementary Fig. S4.

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