Journal
NANOTECHNOLOGY
Volume 21, Issue 50, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/21/50/505702
Keywords
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Funding
- BIT
- 111 Project in China [B07012]
- NSFC [21004006]
- Program for the New Century Excellent Talents in University (NCET)
- AFOSR [FA9550-10-1-0546]
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5 mm long aligned titanium oxide/carbon nanotube (TiO2/CNT) coaxial nanowire arrays have been prepared by electrochemically coating the constituent CNTs with a uniform layer of highly crystalline anatase TiO2 nanoparticles. While the presence of the TiO2 coating was confirmed by scanning electron microscopy, transmission electron microscopy, Raman spectroscopy and x-ray diffraction, the resultant TiO2/CNT coaxial arrays were demonstrated to exhibit minimized recombination of photoinduced electron-hole pairs and fast electron transfer from the long TiO2/CNT arrays to external circuits. This, in conjunction with the aligned macrostructure, facilitates the fabrication of TiO2/CNT arrays for various device applications, ranging from photodetectors to photocatalytic systems. Thus, the millimeter long TiO2/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.
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