TiO_2纳米带制备、表征及光催化性能

Synthesis,characterization and photocatalytic property of TiO_2 nanoribbons

采用简单的水热反应以及后续的热处理,制备了大量的TiO2纳米带。通过XRD、SEM、TEM以及UV-Vis对产物进行表征和分析,并以甲基橙作为目标降解物,对退火后的产物进行了光催化性能测试。结果表明,所制备的样品在600℃热处理3h后,样品为锐钛矿相与TiO2(B)相的混晶相。退火以后,带的形态保持较好,带宽约60nm。室温下,所制备的混晶TiO2对甲基橙具有良好的紫外光降解能力,60min后降解度达96%。

Large-scale TiOz nanoribbons have been successfully synthesized via a simple hydrothermal method and postheat treatment. The samples were characterized and analyzed by XRD, SEM, TEM and UV-Vis. And the photocatalytic property of the calcinated sample was tested using methyl orange as the degrading target. It was found that the sample cal- cinated at 600C for 3h was composed of anatase and TiO2 （B）, and its morphology was well preserved. The width of the ribbon was about 60nrn. This kind of TiOe showed a favorable degradation toward methyl orange. As high as 96~ methyl orange was degraded after 60min.