Revealing the multi hydrogen bonding state within iron doped amorphous carbon.

Hydrogenated Fe doped amorphous carbon is synthesized via mechanically alloying. XANES analysis suggests that Fe is considered to bond with either C or H atom where the first principle calculations reveals that two types of H-C bonding is confirmed. Weak H-C bond is observed near Fe atom while strong H-C bond is seen far from Fe atom. Electronic structure discovered that weak H-C bonding is induced by Fe atoms where Fe form ionic like bond with surrounding C, resulting in the weak H-C interaction. Thus, two different types of H-C bonding is confirmed within Fe doped amorphous carbon. [ABSTRACT FROM AUTHOR]