Figure 8. XAS characterization of carbon-nanotube nanopeapods: (A) XAS of SWCNTs and NiX2@SWCNTs (X = Cl, Br) (Reproduced with permission[124]. Copyright 2012, Wiley). (B) XAS of SWCNTs and AgX@SWCNTs (X = Cl, Br, I) (Reproduced with permission[102]. Copyright 2010, Elsevier).