Rapid Synthesis of Cyclomatrix Polyphosphazene Spheres and their Application for the Production of Microporous Carbon Spheres
Uniform cyclomatrix polyphosphazene spheres with diameter of about 410 nm were firstly synthesized rapidly at room temperature by precipitation polymerization of hexachlorocyclotriphosphazene with 4,4′-sulfonyldiphenol, using triethylamine as acid-acceptor and acetonitrile as solvent. Then, monodisperse carbon spheres with abundant micropores were produced by carbonization of the polyphosphazene spheres at a high temperature under a nitrogen atmosphere. As-produced carbon spheres were well characterized by SEM, TEM, EDX, and N2 adsorption technique. Results show that the carbon spheres possess an average diameter of 320 nm, a BET surface area of about 752 m2·g-1, a total pore volume of 0.55 m3·g-1, and a micropore size distribution.
J. W. Fu and Q. Xu, "Rapid Synthesis of Cyclomatrix Polyphosphazene Spheres and their Application for the Production of Microporous Carbon Spheres", Advanced Materials Research, Vol. 266, pp. 188-191, 2011