Piezo-, photo- and piezophotocatalytic activity of electrospun fibrous PVDF/CTAB membrane

A composite material based on polyvinylidene fluoride (PVDF) nanofibers modified with cetyltrimethylammonium bromide (CTAB) was synthesized by coaxial electrospinning. The morphology and structure of the were studied SEM, FTIR spectroscopy, X-ray diffraction analysis, XPS, piezo-photo- piezo-photocatalytic activity during decomposition organic dye Methylene blue (MB) studied. It is shown that addition CTAB promotes additional polarization PVDF due to ion-dipole interaction. has been for first time photosensitivity wide-gap dielectric polymer (the band gap more than 6 eV). demonstrated photocatalytic efficiency 91% in 60 minutes. exhibits piezocatalytic – 73% Experiments trapping active oxidizing forms have established OH hydroxyl radicals play main role process.