Dispersing and functionalizing multiwalled carbon nanotubes in TiO 2 Sol

Xing Bin Yan; Beng Kang Tay; Yi Yang

doi:10.1021/jp065434g

Dispersing and functionalizing multiwalled carbon nanotubes in TiO ₂ Sol

Xing Bin Yan^*, Beng Kang Tay, Yi Yang

^*Corresponding author for this work

Nanyang Technological University

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

106 Citations (Scopus)

Abstract

We report that oxidized multiwalled carbon nanotubes (MWCNTs) can be synchronously dispersed and functionalized in TiO₂ sol via an in situ sol-gel process. Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and atomic force microscopy (AFM) were used to characterize the functionalized MWCNTs. The results revealed that the hydrolysis and condensation originated from Ti(OC₄H₉) ₄ molecules favor the dispersion of MWCNTs in as-prepared TiO ₂ sol. Based on the strong interaction between the oxidized MWCNTs and TiO₂ sol during the in situ sol-gel process, MWCNT (core)-TiO_x (shell) tubular composites and TiO₂ nanotubes can be obtained through filtrating, washing, and annealing of this kind of TiO₂ sol containing functionalized MWCNTs, as revealed by TEM, XPS, Raman spectroscopy, and redispersion experiment. By casting the dilute dispersion of functionalized MWCNTs onto a hydrophilic Si surface, discrete and individual nanotubes can be observed by AFM.

Original language	English
Pages (from-to)	25844-25849
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	110
Issue number	51
DOIs	https://doi.org/10.1021/jp065434g
Publication status	Published - Dec 28 2006
Externally published	Yes

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp065434g

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title = "Dispersing and functionalizing multiwalled carbon nanotubes in TiO 2 Sol",

abstract = "We report that oxidized multiwalled carbon nanotubes (MWCNTs) can be synchronously dispersed and functionalized in TiO2 sol via an in situ sol-gel process. Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and atomic force microscopy (AFM) were used to characterize the functionalized MWCNTs. The results revealed that the hydrolysis and condensation originated from Ti(OC4H9) 4 molecules favor the dispersion of MWCNTs in as-prepared TiO 2 sol. Based on the strong interaction between the oxidized MWCNTs and TiO2 sol during the in situ sol-gel process, MWCNT (core)-TiOx (shell) tubular composites and TiO2 nanotubes can be obtained through filtrating, washing, and annealing of this kind of TiO2 sol containing functionalized MWCNTs, as revealed by TEM, XPS, Raman spectroscopy, and redispersion experiment. By casting the dilute dispersion of functionalized MWCNTs onto a hydrophilic Si surface, discrete and individual nanotubes can be observed by AFM.",

author = "Yan, {Xing Bin} and Tay, {Beng Kang} and Yi Yang",

year = "2006",

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doi = "10.1021/jp065434g",

language = "English",

volume = "110",

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journal = "Journal of Physical Chemistry B",

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publisher = "American Chemical Society",

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T1 - Dispersing and functionalizing multiwalled carbon nanotubes in TiO 2 Sol

AU - Yan, Xing Bin

AU - Tay, Beng Kang

AU - Yang, Yi

PY - 2006/12/28

Y1 - 2006/12/28

N2 - We report that oxidized multiwalled carbon nanotubes (MWCNTs) can be synchronously dispersed and functionalized in TiO2 sol via an in situ sol-gel process. Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and atomic force microscopy (AFM) were used to characterize the functionalized MWCNTs. The results revealed that the hydrolysis and condensation originated from Ti(OC4H9) 4 molecules favor the dispersion of MWCNTs in as-prepared TiO 2 sol. Based on the strong interaction between the oxidized MWCNTs and TiO2 sol during the in situ sol-gel process, MWCNT (core)-TiOx (shell) tubular composites and TiO2 nanotubes can be obtained through filtrating, washing, and annealing of this kind of TiO2 sol containing functionalized MWCNTs, as revealed by TEM, XPS, Raman spectroscopy, and redispersion experiment. By casting the dilute dispersion of functionalized MWCNTs onto a hydrophilic Si surface, discrete and individual nanotubes can be observed by AFM.

AB - We report that oxidized multiwalled carbon nanotubes (MWCNTs) can be synchronously dispersed and functionalized in TiO2 sol via an in situ sol-gel process. Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and atomic force microscopy (AFM) were used to characterize the functionalized MWCNTs. The results revealed that the hydrolysis and condensation originated from Ti(OC4H9) 4 molecules favor the dispersion of MWCNTs in as-prepared TiO 2 sol. Based on the strong interaction between the oxidized MWCNTs and TiO2 sol during the in situ sol-gel process, MWCNT (core)-TiOx (shell) tubular composites and TiO2 nanotubes can be obtained through filtrating, washing, and annealing of this kind of TiO2 sol containing functionalized MWCNTs, as revealed by TEM, XPS, Raman spectroscopy, and redispersion experiment. By casting the dilute dispersion of functionalized MWCNTs onto a hydrophilic Si surface, discrete and individual nanotubes can be observed by AFM.

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Dispersing and functionalizing multiwalled carbon nanotubes in TiO ₂ Sol

Abstract

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