Waste-Derived High-Nitrogen Self-Doped Porous Carbons as Efficient Adsorbents for Methylene Blue.

In this study, we prepared high-nitrogen self-doped porous carbons (NPC1 and NPC2) derived from the pruned branches and seeds of using a simple one-step method. NPC1 and NPC2 exhibited elevated nitrogen contents of 3.56% and 4.