Dual Lewis site creation for activation of methanol on Fe₃O₄(111) thin films.

ABSTRACT: Despite a wide application in heterogeneous catalysis, the surface termination of Fe₃O₄(111) remains controversial. Herein, a surface with both Lewis acid and base sites is created through formation of an Fe₃O₄(111) film on α-Fe₂O₃(0001). The dual functionality is generated from a locally nonuniform surface layer of O adatoms and Fe_tet1 sites. This reactive layer is reproducibly formed even in oxygen-free environments because of the high mobility of ions in the underlying α-Fe₂O₃(0001). The atomic structure of the Fe₃O₄(111) surface was identified by scanning tunneling microscopy (STM) and density functional theory (DFT) using the registry of the overlayers with the surf

SUBMITTER: Xu F 

PROVIDER: S-EPMC8157392 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature