Enhanced photocatalytic properties of ultra-long nanofiber synthesized from pure titanium powders
来源期刊：Rare Metals2012年第1期
论文作者：TAO Jiea,DONG Xiangb,ZHU Honga,TAO Haijuna,and HE Pingtinga a College of Material Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing ,China b Kunming University of Science and Technology
文章页码：39 - 42
摘 要：Using Ti powder as reagent,ultra-long TiO2 nanofibers were prepared via hydrothermal method in NaOH solution.The samples were char-acterized respectively by means of field emission scanning electron microscopy （FESEM）,transmission electron microscopy （TEM） with selected area electron diffraction （SAED）,and X-ray diffraction （XRD）.The diameter and the length of the ultra-long TiO2 nanofiber were ～100 nm and >200μm,respectively.The ultra-long TiO2 nanofibers were anatase after heat treatment at 450 ?C for 1 h.Moreover,the optical properties of the products were investigated by UV-visible light absorption spectrum.Furthermore,methyl orange was used as a target molecule to estimate the photocatalytic activity of the specimens.Under the same testing conditions,the photocatalytic activity of the ultra-long TiO2 nanofibers was higher than that of P25.Direct electrical pathway and improved light-harvesting efficiency were crucial for the superior photocatalytic activity of the ultra-long TiO2 nanofibers.
TAO Jiea,DONG Xiangb,ZHU Honga,TAO Haijuna,and HE Pingtinga a College of Material Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China b Kunming University of Science and Technology
摘 要：Using Ti powder as reagent,ultra-long TiO2 nanofibers were prepared via hydrothermal method in NaOH solution.The samples were char-acterized respectively by means of field emission scanning electron microscopy （FESEM）,transmission electron microscopy （TEM） with selected area electron diffraction （SAED）,and X-ray diffraction （XRD）.The diameter and the length of the ultra-long TiO2 nanofiber were ～100 nm and >200μm,respectively.The ultra-long TiO2 nanofibers were anatase after heat treatment at 450 ?C for 1 h.Moreover,the optical properties of the products were investigated by UV-visible light absorption spectrum.Furthermore,methyl orange was used as a target molecule to estimate the photocatalytic activity of the specimens.Under the same testing conditions,the photocatalytic activity of the ultra-long TiO2 nanofibers was higher than that of P25.Direct electrical pathway and improved light-harvesting efficiency were crucial for the superior photocatalytic activity of the ultra-long TiO2 nanofibers.
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