Abstract

This research aims to prepare titanium oxide nanofiber using a simple electrospinning procedure, then study the effect of hydrothermal treatment on the morphology and photocatalyst of nanofiber. The produced TiO₂ nanofiber is characterized by XRD, FESEM, PL and UV-vis spectrophotometer analysis. XRD measurements show that the produced TiO₂ nanofiber includes two phases, anatase and rutile in addition to the change in the percentage weight of these two phases after hydrothermal treatment. FESEM images reveal that there is a change in the nanofiber’s morphology by the formation of tetragonal nanorods on the surface of pure nanofiber after the hydrothermal treatment. The efficiency of TiO₂ nanofiber has been studied before and after the hydrothermal treatment. The photocatalytic efficiency evaluated by photodegradation of methylene blue under UV light irradiation which shows that the efficiency of TiO₂ nanofiber after hydrothermal treatment (97.7%) after a degradation time 180 min was higher than that before hydrothermal (92%).

摘要

本研究旨在通过简单的静电纺丝工艺制备氧化钛纳米纤维，然后研究水热处理对纳米纤维形貌和光催化剂的影响。通过XRD、FESEM、PL和UV-vis分光光度计分析对制备的TiO ₂纳米纤维进行表征。XRD测量表明，除了水热处理后这两相的重量百分比变化之外，所生产的TiO ₂纳米纤维还包括锐钛矿和金红石两相。FESEM图像显示，水热处理后纯纳米纤维表面形成四方纳米棒，纳米纤维的形态发生了变化。TiO ₂的效率在水热处理之前和之后研究了纳米纤维。紫外光照射下亚甲基蓝光降解的光催化效率表明，水热处理后TiO ₂纳米纤维的效率（97.7%）在降解时间180 min后高于水热前（92%）。