Co-electrospinning fabrication and photocatalytic performance of TiO2/SiO2 core/sheath nanofibers with tunable sheath thickness

摘要: Abstract In this paper, core/sheath TiO 2 /SiO nanofibers with tunable sheath thickness were directly fabricated via a facile co-electrospinning technique subsequent calcination at 500 °C. The morphologies and structures of characterized by TGA, FESEM, TEM, FTIR, XPS BET. It was found that the 1D are made up anatase–rutile core amorphous SiO sheath. influences its on photoreactivity evaluated observing photo-degradation methylene blue aqueous solution under irradiation UV light. Compared pure nanofibers, performed better catalytic performance. That attributed to not only efficient separation hole–electron pairs resulting from formation heterojunction but also larger surface area silanol group which will be useful provide higher capacity for oxygen adsorption generate more hydroxyl radicals. And optimized 37 nm exhibited best photocatalytic