Fe-doped trititanate nanotubes: Formation, optical and magnetic properties, and catalytic applications

Wei Qiang Han; Wen Wen; Ding Yi; Zhenxian Liu; Mathew M. Maye; Laura Lewis; Jonathan Hanson; Oleg Gang

doi:10.1021/jp074381f

Fe-doped trititanate nanotubes: Formation, optical and magnetic properties, and catalytic applications

Wei Qiang Han, Wen Wen, Ding Yi, Zhenxian Liu, Mathew M. Maye, Laura Lewis, Jonathan Hanson, Oleg Gang

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

39 Scopus citations

Abstract

We have synthesized crystalline Fe-doped trititanate nanotubes via a wet-chemistry method. The products were characterized by high-resolution transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDS), in-situ X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-vis), synchrotron infrared (IR) spectroscopy, and temperature-dependent magnetometry. The Fe-doped trititanate nanotubes are about 8 nm in diameter and up to 1 μm long. EDS revealed that the Fe-doping ratio is about 0.5%, while IR and UV-vis spectra reveal the effects of doping. In-situ XRD experiments demonstrate the transformation of the trititanate to titania phase under a reductive atmosphere. The Fe-doped trititanate nanotubes exhibited noticeable catalytic activity in the water-gas-shift reaction. Magnetic measurements indicate that the Fe-doped trititanate nanotubes comprise a mixture of ferromagnetic and paramagnetic phases.

Original language	English (US)
Pages (from-to)	14339-14342
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	39
DOIs	https://doi.org/10.1021/jp074381f
State	Published - Oct 4 2007
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Fe-doped trititanate nanotubes: Formation, optical and magnetic properties, and catalytic applications",

abstract = "We have synthesized crystalline Fe-doped trititanate nanotubes via a wet-chemistry method. The products were characterized by high-resolution transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDS), in-situ X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-vis), synchrotron infrared (IR) spectroscopy, and temperature-dependent magnetometry. The Fe-doped trititanate nanotubes are about 8 nm in diameter and up to 1 μm long. EDS revealed that the Fe-doping ratio is about 0.5%, while IR and UV-vis spectra reveal the effects of doping. In-situ XRD experiments demonstrate the transformation of the trititanate to titania phase under a reductive atmosphere. The Fe-doped trititanate nanotubes exhibited noticeable catalytic activity in the water-gas-shift reaction. Magnetic measurements indicate that the Fe-doped trititanate nanotubes comprise a mixture of ferromagnetic and paramagnetic phases.",

author = "Han, {Wei Qiang} and Wen Wen and Ding Yi and Zhenxian Liu and Maye, {Mathew M.} and Laura Lewis and Jonathan Hanson and Oleg Gang",

year = "2007",

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doi = "10.1021/jp074381f",

language = "English (US)",

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T1 - Fe-doped trititanate nanotubes

T2 - Formation, optical and magnetic properties, and catalytic applications

AU - Han, Wei Qiang

AU - Wen, Wen

AU - Yi, Ding

AU - Liu, Zhenxian

AU - Maye, Mathew M.

AU - Lewis, Laura

AU - Hanson, Jonathan

AU - Gang, Oleg

PY - 2007/10/4

Y1 - 2007/10/4

N2 - We have synthesized crystalline Fe-doped trititanate nanotubes via a wet-chemistry method. The products were characterized by high-resolution transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDS), in-situ X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-vis), synchrotron infrared (IR) spectroscopy, and temperature-dependent magnetometry. The Fe-doped trititanate nanotubes are about 8 nm in diameter and up to 1 μm long. EDS revealed that the Fe-doping ratio is about 0.5%, while IR and UV-vis spectra reveal the effects of doping. In-situ XRD experiments demonstrate the transformation of the trititanate to titania phase under a reductive atmosphere. The Fe-doped trititanate nanotubes exhibited noticeable catalytic activity in the water-gas-shift reaction. Magnetic measurements indicate that the Fe-doped trititanate nanotubes comprise a mixture of ferromagnetic and paramagnetic phases.

AB - We have synthesized crystalline Fe-doped trititanate nanotubes via a wet-chemistry method. The products were characterized by high-resolution transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDS), in-situ X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-vis), synchrotron infrared (IR) spectroscopy, and temperature-dependent magnetometry. The Fe-doped trititanate nanotubes are about 8 nm in diameter and up to 1 μm long. EDS revealed that the Fe-doping ratio is about 0.5%, while IR and UV-vis spectra reveal the effects of doping. In-situ XRD experiments demonstrate the transformation of the trititanate to titania phase under a reductive atmosphere. The Fe-doped trititanate nanotubes exhibited noticeable catalytic activity in the water-gas-shift reaction. Magnetic measurements indicate that the Fe-doped trititanate nanotubes comprise a mixture of ferromagnetic and paramagnetic phases.

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JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

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ER -

Fe-doped trititanate nanotubes: Formation, optical and magnetic properties, and catalytic applications

Abstract

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