Fluorine and Bromine Dual-Doped Nanoporous Carbons: Preparation and Surface Chemistry Studies.

ABSTRACT: A novel method for the concurrent introduction of fluorine and bromine into the surface of nanoporous activated carbon (NAC) is evaluated. According to the method, the preheated NAC was treated with 1,2-dibromotetrafluoroethane at elevated temperatures (400-800 °C). Potentiometric and elemental analysis, nitrogen adsorption-desorption, scanning electron microscopy-energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy (XPS), and ¹⁹F solid-state NMR were used to study the NAC microstructure and changes in surface chemistry. The specific modification temperature was found to have a decisive influence on the resulting halogen content of the NAC surface. About 1.5 mmol g^-1 of bromine and only 0.5 mmol g^-1 of fluorine are chemisorbed on the NAC s

SUBMITTER: Mussabek G 

PROVIDER: S-EPMC11411662 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature