Titanium dioxide fibers prepared from two novel polytitanium precursors containing linear Ti-OH-Ti chains applied for photocatalytic degradation
Titanium dioxide fibers prepared from two novel polytitanium precursors containing linear Ti-OH-Ti chains applied for photocatalytic degradation
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由两种含有线性 Ti-OH-Ti 链的新型聚钛前驱体制备的二氧化钛纤维，用于光催化降解
DOI：
10.1016/j.matlet.2015.04.044
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发表时间：
2015
影响因子：
3
通讯作者：
Xu Dong
中科院分区：
文献类型：
--
作者：
Cai Ningning;Wang Xinqiang;Guo Daidong;Zhu Luyi;Zhang Guanghui;Duan Xiulan;Xu Dong
采用溶胶-凝胶法结合干纺丝技术制备了聚乙酰丙酮钛（PAT）和聚乙酸钛（PET）两种新型前驱纤维。两种前驱体纤维经500℃蒸汽烧结后，成功制备了多晶tio2纤维。PAT和PET纤维都很容易被收集。PAT纤维呈浅黄色，透明。PET纤维呈黄白色，半透明。tio2纤维的晶相为锐钛矿，直径为2 ~ 5 μm （TiO2-PAT）和10 ~ 20 μm （TiO2-PET）。同时，纤维的颗粒倾向于紧密地聚集在一起，纤维中孔隙的直径为几纳米。与P25相比，tio2纤维具有更好的光催化降解活性。
Two novel precursor fibers named polyacetylacetonatotitanium (PAT) and polyacetictitanium (PET) were prepared by a sol–gel method combined with dry-spinning technique. Polycrystalline TiO2fibers were successfully obtained from the two precursor fibers after sintering at 500 °C with steam treatment. Both PAT and PET fibers were easily collected. PAT fiber is light yellow and transparent. PET fiber is yellowish white and translucent. The crystalline phase of TiO2fibers is anatase and the diameters are 2–5 μm (TiO2–PAT) and 10–20 μm (TiO2–PET). Meanwhile, the grains of the fibers tend to pack closely together and the diameter of the pores in the fibers is several nanometers. The TiO2fibers exhibit better photocatalytic degradation activities compared with P25.