Wu Hsin-Jung, Fan Yu-Jui, Wang Sheng-Siang, Sakthinathan Subramanian, Chiu Te-Wei, Li Shao-Sian, Park Joon-Hyeong
Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan.
School of Biomedical Engineering, Taipei Medical University, No. 250, Wuxsing Street, Taipei 11031, Taiwan.
Nanomaterials (Basel). 2019 Sep 3;9(9):1252. doi: 10.3390/nano9091252.
A hollow nanostructure is attractive and important in different fields of applications, for instance, solar cells, sensors, supercapacitors, electronics, and biomedical, due to their unique structure, large available interior space, low bulk density, and stable physicochemical properties. Hence, the need to prepare hollow nanotubes is more important. In this present study, we have prepared CuCrO hollow nanotubes by simple approach. The CuCrO hollow nanotubes were prepared by applying electrospun AlO fibers as a template for the first time. Copper chromium ions were dip-coated on the surface of electrospun-derived AlO fibers and annealed at 600 °C in vacuum to form AlO-CuCrO core-shell nanofibers. The CuCrO hollow nanotubes were obtained by removing AlO cores by sulfuric acid wet etching while preserving the rest of original structures. The structures of the CuCrO-coated AlO core-shell nanofibers and CuCrO hollow nanotubes were identified side-by-side by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. The CuCrO hollow nanotubes may find applications in electrochemistry, catalysis, and biomedical application. This hollow nanotube preparation method could be extended to the preparation of other hollow nanotubes, fibers, and spheres.
中空纳米结构因其独特的结构、较大的内部可用空间、低堆积密度和稳定的物理化学性质，在太阳能电池、传感器、超级电容器、电子学和生物医学等不同应用领域具有吸引力且十分重要。因此，制备中空纳米管的需求更为重要。在本研究中，我们通过简单的方法制备了CuCrO中空纳米管。首次以静电纺丝法制备的AlO纤维为模板制备了CuCrO中空纳米管。将铜铬离子浸涂在静电纺丝法制备的AlO纤维表面，并在600℃真空退火，形成AlO-CuCrO核壳纳米纤维。通过硫酸湿法蚀刻去除AlO核，同时保留其余原始结构，从而获得CuCrO中空纳米管。通过X射线衍射、场发射扫描电子显微镜和透射电子显微镜对包覆CuCrO的AlO核壳纳米纤维和CuCrO中空纳米管的结构进行了并排鉴定。CuCrO中空纳米管可能在电化学、催化和生物医学应用中找到应用。这种中空纳米管制备方法可扩展到其他中空纳米管、纤维和球体的制备。
