Fig. 1
From: Molecular dynamics simulation of Sunset Yellow dye removal from water using hydrochar adsorbent
Molecular structures used in the simulation study. (a) Sunset Yellow dye. Hydrochar variants: (b) HC1 (mixed functional groups), (c) HC2 (purified carbon framework for \(\pi\)-\(\pi\) interactions), (d) HC3 (hydroxyl-enriched). Atom colors: C (grey), H (white), O (red), N (blue), S (yellow).
