title: Super-long aligned TiO2/carbon nanotube arrays.
abstract: 5 mm long aligned titanium oxide/carbon nanotube (TiO(2)/CNT) coaxial nanowire arrays have been prepared by electrochemically coating the constituent CNTs with a uniform layer of highly crystalline anatase TiO(2) nanoparticles. While the presence of the TiO(2) coating was confirmed by scanning electron microscopy, transmission electron microscopy, Raman spectroscopy and x-ray diffraction, the resultant TiO(2)/CNT coaxial arrays were demonstrated to exhibit minimized recombination of photoinduced electron-hole pairs and fast electron transfer from the long TiO(2)/CNT arrays to external circuits. This, in conjunction with the aligned macrostructure, facilitates the fabrication of TiO(2)/CNT arrays for various device applications, ranging from photodetectors to photocatalytic systems. Thus, the millimeter long TiO(2)/CNT arrays represent a significant advance in the development of new macroscopic photoelectronic nanomaterials attractive for a variety of device applications beyond those demonstrated in this study.
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education, Department of Chemistry, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhao
authors.forename: Yue
authors.initials: Y
authors.lastname: Hu
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
authors.forename: Shaowen
authors.initials: S
authors.lastname: Zhang
authors.forename: Liangti
authors.initials: L
authors.lastname: Qu
authors.forename: Gaoquan
authors.initials: G
authors.lastname: Shi
authors.forename: Liming
authors.initials: L
authors.lastname: Dai