A scrolled sheet precursor route to niobium oxide nanotubes

Yoji Kobayashi; Hideo Hata; Thomas E. Mallouk

doi:10.1557/proc-988-0988-qq03-20

A scrolled sheet precursor route to niobium oxide nanotubes

Yoji Kobayashi, Hideo Hata, Thomas E. Mallouk

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

Potassium hexaniobate (K₄Nb₆O₁₇) is one of the few relatively well-studied oxides which, upon exfoliation, rolls up into scrolls almost quantitatively with monodisperse length (∼300 nm) and diameter (30 nm). The tubes have high surface area (250-300 m²/g) and a wall thickness of 2-3 nm. These H₄Nb₆O₁₇ scrolls were converted to Nb₂O₅ via a thermal dehydration process, yielding high surface area (150-200 m²/g) Nb ₂O₅ nanotubes. Despite extensive atomic rearrangement during dehydration at 400-450°C, little sintering is occurs, and so the tubular morphology is retained. Attempts to conduct further reactions to obtain LiNbO₃ and KNbO₃ nanotubes from reaction with molten alkali salts failed to yield the intended nanotubular oxides.

Original language	English (US)
Title of host publication	Solid-State Chemistry of Inorganic Materials VI
Publisher	Materials Research Society
Pages	206-211
Number of pages	6
ISBN (Print)	9781604234336
DOIs	https://doi.org/10.1557/proc-988-0988-qq03-20
State	Published - 2006
Event	2006 MRS Fall Meeting - Boston, MA, United States Duration: Nov 27 2006 → Dec 1 2006

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	988
ISSN (Print)	0272-9172

Other

Other	2006 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	11/27/06 → 12/1/06

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/proc-988-0988-qq03-20

Cite this

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title = "A scrolled sheet precursor route to niobium oxide nanotubes",

abstract = "Potassium hexaniobate (K4Nb6O17) is one of the few relatively well-studied oxides which, upon exfoliation, rolls up into scrolls almost quantitatively with monodisperse length (∼300 nm) and diameter (30 nm). The tubes have high surface area (250-300 m2/g) and a wall thickness of 2-3 nm. These H4Nb6O17 scrolls were converted to Nb2O5 via a thermal dehydration process, yielding high surface area (150-200 m2/g) Nb 2O5 nanotubes. Despite extensive atomic rearrangement during dehydration at 400-450°C, little sintering is occurs, and so the tubular morphology is retained. Attempts to conduct further reactions to obtain LiNbO3 and KNbO3 nanotubes from reaction with molten alkali salts failed to yield the intended nanotubular oxides.",

author = "Yoji Kobayashi and Hideo Hata and Mallouk, {Thomas E.}",

year = "2006",

doi = "10.1557/proc-988-0988-qq03-20",

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address = "United States",

note = "2006 MRS Fall Meeting ; Conference date: 27-11-2006 Through 01-12-2006",

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T1 - A scrolled sheet precursor route to niobium oxide nanotubes

AU - Kobayashi, Yoji

AU - Hata, Hideo

AU - Mallouk, Thomas E.

PY - 2006

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N2 - Potassium hexaniobate (K4Nb6O17) is one of the few relatively well-studied oxides which, upon exfoliation, rolls up into scrolls almost quantitatively with monodisperse length (∼300 nm) and diameter (30 nm). The tubes have high surface area (250-300 m2/g) and a wall thickness of 2-3 nm. These H4Nb6O17 scrolls were converted to Nb2O5 via a thermal dehydration process, yielding high surface area (150-200 m2/g) Nb 2O5 nanotubes. Despite extensive atomic rearrangement during dehydration at 400-450°C, little sintering is occurs, and so the tubular morphology is retained. Attempts to conduct further reactions to obtain LiNbO3 and KNbO3 nanotubes from reaction with molten alkali salts failed to yield the intended nanotubular oxides.

AB - Potassium hexaniobate (K4Nb6O17) is one of the few relatively well-studied oxides which, upon exfoliation, rolls up into scrolls almost quantitatively with monodisperse length (∼300 nm) and diameter (30 nm). The tubes have high surface area (250-300 m2/g) and a wall thickness of 2-3 nm. These H4Nb6O17 scrolls were converted to Nb2O5 via a thermal dehydration process, yielding high surface area (150-200 m2/g) Nb 2O5 nanotubes. Despite extensive atomic rearrangement during dehydration at 400-450°C, little sintering is occurs, and so the tubular morphology is retained. Attempts to conduct further reactions to obtain LiNbO3 and KNbO3 nanotubes from reaction with molten alkali salts failed to yield the intended nanotubular oxides.

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SN - 9781604234336

T3 - Materials Research Society Symposium Proceedings

SP - 206

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BT - Solid-State Chemistry of Inorganic Materials VI

PB - Materials Research Society

T2 - 2006 MRS Fall Meeting

Y2 - 27 November 2006 through 1 December 2006

ER -

A scrolled sheet precursor route to niobium oxide nanotubes

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