Effect of Graphene Oxide Particle Size on the Enzymatic Synthesis of Polyaniline Films.

ABSTRACT: In this work, the effect of aqueous dispersions of graphene oxide (GO) and nanosized graphene oxide (nGO) on the enzymatic polymerization of polyaniline (PANI) was studied. The enzymatic polymerization of PANI was carried out in aqueous medium using toluenesulfonic acid (TSA) as the dopant, horseradish peroxidase (HRP) as the catalyst, and hydrogen peroxide (H₂O₂) as the oxidant, using 1.0, 2.5, and 5.0 wt% of GO and nGO. The morphology of PANI-GO/nGO composites was studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Further characterization was performed by thermogravimetric analysis (TGA) and spectroscopic techniques such as ultraviolet-visible (UV-Vis), Fourier-transform infrared (FTIR), Raman and X-ray photoelectronics (XPS).

SUBMITTER: Guerrero-Bermea C 

PROVIDER: S-EPMC12654529 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature