chem·i·sorb 
(kĕmĭ-sôrb′) also chem·o·sorb (-ə-sôrb′)
(kĕmĭ-sôrb′) also chem·o·sorb (-ə-sôrb′)tr.v. chem·i·sorbed, chem·i·sorb·ing, chem·i·sorbs also chem·o·sorbed or chem·o·sorb·ing or chem·o·sorbs
To take up and chemically bind (a substance) onto the surface of another substance.
[Alteration of CHEMO- + (AB)SORB.]
chem′i·sorption (-sôrpshən) n.