Super-long aligned TiO2/carbon nanotube arrays

Yang Zhao; Yue Hu; Yan Li; Han Zhang; Shaowen Zhang; Liangti Qu; Gaoquan Shi; Liming Dai

doi:10.1088/0957-4484/21/50/505702

Super-long aligned TiO₂/carbon nanotube arrays

Yang Zhao^*, Yue Hu, Yan Li, Han Zhang, Shaowen Zhang, Liangti Qu, Gaoquan Shi, Liming Dai

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

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 TiO ₂ 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.

Original language	English
Article number	505702
Journal	Nanotechnology
Volume	21
Issue number	50
DOIs	https://doi.org/10.1088/0957-4484/21/50/505702
Publication status	Published - 17 Dec 2010
Externally published	Yes

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title = "Super-long aligned TiO2/carbon nanotube arrays",

abstract = "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 TiO 2 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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AU - Zhao, Yang

AU - Hu, Yue

AU - Li, Yan

AU - Zhang, Han

AU - Zhang, Shaowen

AU - Qu, Liangti

AU - Shi, Gaoquan

AU - Dai, Liming

PY - 2010/12/17

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N2 - 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 TiO 2 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.

AB - 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 TiO 2 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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Super-long aligned TiO₂/carbon nanotube arrays

Abstract

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