Fabrication of graphene-oxide/SmFeO3 interfaces by ambient pressure/high-temperature fusion of Fe3C@CNOs with Sm2O3@C-capsules. (March 2019)

• Record Type: Journal Article
• Authors: Boi, Filippo S.; Zhang, Xiaotian; Medranda, Daniel; Odunmbaku, Omololu; Taallah, Ayoub; Wang, Shanling
• Is Part Of: Materials today communications. Volume 18(2019)
• Page Start: 81
• Page End: 86
• Publication Date: 2019-03
• Subjects: Graphene-oxide -- sp3-carbon -- Carbon-onions-fusion -- SmFeO3; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2018.11.010
• Languages: English
• ISSNs: 2352-4928

Abstract

Graphical abstract: Highlights: We report the formation of a novel graphene-oxide-like material filled with Pbnm SmFeO3 . This is obtained by fusion of Fe3C filled carbon onions (Fe3 C@CNOs) with carbon encapsulated Sm2 O3 (Sm2 O3 @C) particles. The Fe3 C@CNOs and Sm2 O3 @C result from pyrolysis of ferrocene on the top of Sm2 O3 nanoparticles. The Fe3 C@CNOs/Sm2 O3 @C fusion yields the formation of a single crystalline SmFeO3 phase after 18h of annealing. XPS reveal a high sp 3 content which can be correlated to the presence of Carbon-Oxygen bonds at the interface. Abstract: The possibility of creating direct interfaces between graphene and oxide based orthoferrite materials can have important implications for applications of such orthoferrites RFeO3 (R = rare-earth ion) systems in ultrafast photo-magnetic recording, enhanced magnetoelectric interactions, ferroelectrics and others. In this work we demonstrate that fusion of Fe3 C-filled carbon nano-onions (Fe3 C@CNOs) with carbon encapsulated Sm2 O3 (Sm2 O3 @C) particles triggers the formation of such type of interfaces in a novel graphene-oxide like carbon material filled with a Pbnm SmFeO3 phase. By employing a consistent number of experimental techniques, we show that this material possesses important sp 3 characteristics which can be mostly correlated to the presence of CO and CO bonds at the interface.