Synthesize Phosphomolybdic Acid-Doped Polyaniline Microspheres for Catalytic Applications

Abstract

Polyaniline (PANI) composite have generated great interest in the catalyst field due to the coordinate properties of their component. Herein, PANI-PMo12 composite microspheres were successfully fabricated via a facial oxypolymerization with hydrogen peroxide as oxidant and phosphomolybdic acid (PMo12) as dopant. The PANI-PMo12 microspheres were characterized by SEM, XRD, FTIR and XPS. The concentration of PMo12 had a major effect on the diameter of microsphere. The solvent ethanol also played a critical role in the formation of microspheres. The formation mechanism of the PANI-PMo12 microspheres was proposed. Further, the composite microspheres could be directly used as catalyst and displayed a high conversion and selectivity in the epoxidation of cis-cyclooctene with aqueous H2O2 as an oxidant.