Fabrication and study of UV-shielding and photocatalytic performance of uniform TiO2/SiO2 core-shell nanobers via single-nozzle co-electrospinning and interface sol-gel reaction

One-dimensional tio2/sio2 core-shell nanobers were fabricated using a single-nozzle co-electrospinning process with phase-separated, mixed polymer composite solution. the core and shell were composed of polyvinylpyrrolidone (pvp) and polyacrylonitrile (pan) polymers with uniform distribution of tio2 and sio2 nanoparticles (nps), respectively. the nps were synthesized via sol-gel reaction, simultaneously, in the respective polymer solutions. the morphologies and structures of the fabricated tio2/sio2 core-shell nanobers were investigated by xrd, ftir, sem, eds, and tem images. the inuences of different amounts of tio2 and sio2 precursors on the photocatalytic and uvshielding performance of tio2/sio2 core-shell nanobers were studied. photocatalytic activity of the nanobers was evaluated by observing photo-degradation of methyl orange (mo) aqueous solution under irradiation of ultraviolet (uv) light. our results for the tio2/sio2 core-shell nanobers indicate good potential for superior applications in photocatalytic and uv shielding devices.