Structural evolution of large Fe3O4 microspheres on graphene oxide for efficient conversion of syngas into α-olefins

Abstract

Synthesized large porous Fe₃O₄ microspheres of about ∼500 nm located on graphene oxide (GO) could evolve into much smaller iron carbide nanocapsules of about ∼10 nm, which exhibit excellent performance for the production of α-olefins. The formation of small iron carbide nanocapsules is driven by the growth of carbon nanofibers (CNFs) to induce stress over the large Fe₃O₄ microspheres.