一步电纺丝法制备具有增强光催化活性的TiO₂纳米纤维负载金
One-Step Electrospinning Method to Prepare Gold Decorated on TiO₂ Nanofibers with Enhanced Photocatalytic Activity.
作者信息
Wang Tao, Zhang Yu, Wang Yong, Wei Jinxin, Zhou Ming, Zhang Zhengmei, Chen Qi
机构信息
Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China.
出版信息
J Nanosci Nanotechnol. 2018 May 1;18(5):3176-3184. doi: 10.1166/jnn.2018.14543.
A gold doped titanium dioxide (TiO2) nanofiber was prepared by one-step electrospinning technique to control the DC high voltage and the following calcination. The crystal structures and morphology of Au-TiO2 nanofibers were characterized in detail by X-ray diffraction (XRD), energy dispersive photoelectron spectroscopy (EDS), scanning electron microscope (SEM) and transmission electron microscope (TEM). These results indicate that Au is successfully incorporated into TiO2 nanofibers without gold loss, while Au and TiO2 form a heterogeneous structure. It implied that the Schottky barrier existed by X-ray photoelectron spectroscopy (XPS) of 0.075% Au-TiO2. For 0.075% Au-TiO2 nanofibers, the rate of photocatalytic degradation of methylene (MB) was significantly higher than that of pure TiO2 nanofibers.
通过一步电纺丝技术制备了一种金掺杂二氧化钛（TiO₂）纳米纤维，该技术可控制直流高压及后续煅烧过程。利用X射线衍射（XRD）、能量色散光电子能谱（EDS）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对金-二氧化钛纳米纤维的晶体结构和形貌进行了详细表征。这些结果表明，金成功地掺入到二氧化钛纳米纤维中且没有金损失，同时金和二氧化钛形成了异质结构。通过对0.075%金-二氧化钛进行X射线光电子能谱（XPS）分析表明存在肖特基势垒。对于0.075%金-二氧化钛纳米纤维，亚甲基蓝（MB）的光催化降解速率显著高于纯二氧化钛纳米纤维。
Zotero 插件