Ni离子交换改性TiO_2纳米管的制备及其降解盐酸四环素的研究

Preparation of TiO_2 nanotubes with Ni^(2+) ion exchanged and its performance in TC degradation

基于水热法和离子交换法制备得到Ni2+改性的Ti O2纳米管,对样品进行了诸如SEM、TEM、XRD和UV-Vis等一系列表征。在氙灯为光源的模拟日光下,测试样品降解盐酸四环素的光催化性能。结果表明,实验所制备得到的Ti O2纳米管管内中空、两端开口,分散程度好,其晶型为纤铁矿型。Ni2+改性对纳米管的微观形貌和晶型结构略有影响,但光能吸收响应区间明显拓宽,反应90 min后盐酸四环素的降解率可达71.28%。

Ti O2 nanotubes and Ni^2 ＋ modified Ti O2 nanotubes via ion exchange have been prepared by hydrothermal. The samples were characterized by SEM,TEM,XRD and UV-Vis,whose photocatalysis performance has been studied when tetracycline as target pollutant,xenon lamp as the light. The result shows that Ti O2 nanotubes with hollow tube,open both ends,good degree of dispersion. Moreover,the crystalline form is lepidocrocite. Ni2 ＋modified make a slight impact on the morphology and crystal structure of the nanotubes,but significantly broaden the range of energy absorption in response to the reaction after 90 min tetracycline degradation rate of up to 71. 28%.