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. 2021 Mar 25;11:6945. doi: 10.1038/s41598-021-86426-5

Figure 4.

Figure 4

The TGA curves of CNS prepared at 650 °C from nettle (a) stems and (b,c) leaves using NaHCO3 as activating agent. The ratio of nettle powder and NaHCO3 is 1:1 (a,b) and 1:2 (c).