SYNTHESIS AND CHARACTERIZATION OF IODINE DOPED GRAPHENE BY AN UNCATALYZED REACTION |
SYNTHESIS AND CHARACTERIZATION OF IODINE DOPED GRAPHENE BY AN UNCATALYZED REACTION
Adriana Marinoiu*, Elena Carcadea, Irina Petreanu, Elena Marin, Bianca Sucea, Amalia Soare
National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Uzinei Street no. 4, P.O. Box Râureni 7, 240050, Râmnicu Vâlcea, Romania
ABSTRACT
An iodine substituted graphene was synthesised by physic-chemical techniques (oxidation-delaminating-reduction) in order to obtain a metal free catalyst for the oxygen reduction reaction (ORR). The doping with iodine takes place in the reduction step by a simple route, without a specific catalyst. The final product obtained as a black powder was characterised by wavelength dispersive X-ray fluorescence (WDXRF) spectroscopy, Scanning Electron Microscopy coupled with Energy Dispersive X-Ray Spectroscopy (SEM-EDX), surface area estimated from BET method, thermal gravimetric analysis. The presence of iodine is evidenced mainly by EDX spectra and WDXRF spectroscopy.
Keywords: iodine, doped graphene, fuel cell.
________________________ *Corresponding author: Adriana Marinoiu, E-mail: adriana.marinoiu@icsi.ro, phone: 0250 732744, fax: 0250 732746 |