Synthesis and Characterization of Nitrogen-Doped Graphene Oxide/Iron Polyporphyrin Nanocomposite Material

Graphene oxide (GO) has been considered as a suitable framework for the development of hybrid and advanced nanomaterials due to its two-dimensional structure, high specific surface area, and the presence of oxygen-containing functional groups. Despite these features, limitations such as low conductivity and a tendency to aggregate reduce its efficiency in many applications of catalytic and electrochemical processes. In this research, with the aim of advancing and developing the functional properties of graphene oxide, a nanocomposite based on nitrogen-containing graphene oxide (NGO) and Ironpolyporphyrin (Fe-Pop) was synthesized. NGO was prepared using urea and controlled heating, and metal porphyrin was synthesized from the reaction of organic ligands and metal ions in a hydrothermal environment. Then, the NGO/Fe-pop nanocomposite was prepared via sonication. Structural and physical identification and analysis of the samples were performed using XRD, FTIR, and FESEM techniques. XRD results indicate the preservation of the NGO structure and the creation of structural gaps due to the combination with polyporphyrin. The FTIR spectrum indicated the presence of different functional groups and emphasized the effective interaction between the components of the composite. FESEM images also confirmed the homogeneous and uniform dispersion of spherical porphyrin particles on the NGO sheets. This new composition has great potential for applications such as sensors, catalysts, and electrochemical systems.

Keywords:

Graphene Oxide , Nanocomposite , Iron Polyporphyrin