微波辅助Fe掺杂分层结构TiO_2纳米管阵列的制备及光电性能研究
Microwave-Assisted Preparation and Photoelectrical Properties of Fe-doped hierachical TiO_2 Nanotube Arrays
本文通过二次阳极氧化法制备了分层结构的TiO_2纳米管阵列，然后通过微波辅助法进行Fe离子掺杂，微波介质为乙二醇。通过扫描电子显微镜、X射线衍射测试、紫外-可见光漫反射吸收光谱以及电化学测试手段进行相关形貌、结构和性能测试。实验结果显示，通过微波辅助Fe离子掺杂处理的样品光电化学性能明显提高，可实现可见光响应。在光功率为10 mW/cm_2的可见光照射下，最优Fe离子掺杂样品的饱和光电流、光电转化效率以及载流子密度比未经微波辅助Fe离子掺杂处理的TiO_2纳米管阵列样品分别提高了7倍 、8倍以及11倍。本研究证明了微波辅助Fe离子掺杂是一种快捷高能、操作简易的实验手段，可以有效地提高TiO_2纳米管阵列的光电性能。
Hierachical TiO_2 nanotube arrays （TNTAs） were prepared by a two-step anodic oxidation method. Then, Fe-doped hierachical TNTAs were prepared by a microwave assisted method, where ethylene glycol acted as the microwave dielectric. The samples were characterized by SEM, XRD, UV-vis diffuse reflectance spectra and electrochemical tests. The results show that the photoelectrical performance could be improved and the response to the visible light was achieved in the Fe-doped samples. Under visible light irradiation at 10 mW/cm_2, the saturation photocurrent, photoconversion efficiency and carrier density of the optimized Fe-doped sample were increased by 7 times, 8 times and 11 times, respectively, in comparison to the un-doped sample. These results show that the microwave-assisited doping technology is an easy and efficient experimental method which can effectively improve the photoelectical performance of TiO_2 nanotube arrays.
林春富、李建保、李晓静、林仕伟
光电子技术半导体技术材料科学
光催化分层结构TiO_2微波辅助金属离子掺杂
PhotocatalyticHierachical TiO2Microwave assistedMetal ion doped
林春富,李建保,李晓静,林仕伟.微波辅助Fe掺杂分层结构TiO_2纳米管阵列的制备及光电性能研究[EB/OL].(2015-04-17)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/201504-285.点此复制
评论