Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing

R. Ganesan; N. Donia; S. Mathur; I. Johnson

doi:10.1109/ICONN.2010.6045172

Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing

R. Ganesan, N. Donia, S. Mathur, I. Johnson

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

Abstract

Tin oxide (SnO₂) nanowires were synthesized by a molecule based chemical vapour deposition process and the metallic additives Sn and Au were incorporated by treating nanowires in the mixture of Argon and O₂ plasma. Tin inclusion in the SnO₂ nanowires were achieved by preferential etching of the lattice oxygen atoms from the surface of SnO₂ nanowires through the plasma treatment, which lead to chemically directed synthesis of Sn⁰/ SnO₂ nanocomposites. However, Gold incorporated nanowires were obtained by treating the Au sputtered samples (5-13 nm) at low plasma energy to induce nucleation of Au nanocrystals on SnO₂ backbone. Investigations on Carbon-monoxide (CO) sensing behaviour of SnO₂ nanostructures as a function of surface structure, composition and electronic properties are reported. Metal-functionalized nanowires showed better sensitivity for CO at lower operating temperature and exhibited higher transduction towards altering gas atmospheres attributed to a spill-over effect in Au incorporated tin oxide nanowires (AuTO), whereas the surface valence dynamics (Sn⁰/ Sn²⁺/ Sn⁴⁺) is responsible for higher sensitivity of Sn incorporated system (SnTO).

Original language	English
Title of host publication	ICONN 2010
Subtitle of host publication	proceedings of the 2010 International Conference on Nanoscience and Nanotechnology
Editors	Andrew Dzurak
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	49-50
Number of pages	2
ISBN (Print)	9781424452620
DOIs	https://doi.org/10.1109/ICONN.2010.6045172
Publication status	Published - 2010
Externally published	Yes
Event	International Conference on Nanoscience and Nanotechnology (3rd : 2010) - Sydney Duration: 22 Feb 2010 → 26 Feb 2010

Conference

Conference	International Conference on Nanoscience and Nanotechnology (3rd : 2010)
City	Sydney
Period	22/02/10 → 26/02/10

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10.1109/ICONN.2010.6045172

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Ganesan, R., Donia, N., Mathur, S., & Johnson, I. (2010). Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing. In A. Dzurak (Ed.), ICONN 2010: proceedings of the 2010 International Conference on Nanoscience and Nanotechnology (pp. 49-50). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICONN.2010.6045172

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title = "Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing",

abstract = "Tin oxide (SnO₂) nanowires were synthesized by a molecule based chemical vapour deposition process and the metallic additives Sn and Au were incorporated by treating nanowires in the mixture of Argon and O₂ plasma. Tin inclusion in the SnO₂ nanowires were achieved by preferential etching of the lattice oxygen atoms from the surface of SnO₂ nanowires through the plasma treatment, which lead to chemically directed synthesis of Sn⁰/ SnO₂ nanocomposites. However, Gold incorporated nanowires were obtained by treating the Au sputtered samples (5-13 nm) at low plasma energy to induce nucleation of Au nanocrystals on SnO₂ backbone. Investigations on Carbon-monoxide (CO) sensing behaviour of SnO₂ nanostructures as a function of surface structure, composition and electronic properties are reported. Metal-functionalized nanowires showed better sensitivity for CO at lower operating temperature and exhibited higher transduction towards altering gas atmospheres attributed to a spill-over effect in Au incorporated tin oxide nanowires (AuTO), whereas the surface valence dynamics (Sn⁰/ Sn²⁺/ Sn⁴⁺) is responsible for higher sensitivity of Sn incorporated system (SnTO).",

author = "R. Ganesan and N. Donia and S. Mathur and I. Johnson",

year = "2010",

doi = "10.1109/ICONN.2010.6045172",

language = "English",

isbn = "9781424452620",

pages = "49--50",

editor = "Andrew Dzurak",

booktitle = "ICONN 2010",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

note = "International Conference on Nanoscience and Nanotechnology (3rd : 2010) ; Conference date: 22-02-2010 Through 26-02-2010",

}

Ganesan, R, Donia, N, Mathur, S & Johnson, I 2010, Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing. in A Dzurak (ed.), ICONN 2010: proceedings of the 2010 International Conference on Nanoscience and Nanotechnology. Institute of Electrical and Electronics Engineers (IEEE), pp. 49-50, International Conference on Nanoscience and Nanotechnology (3rd : 2010), Sydney, 22/02/10. https://doi.org/10.1109/ICONN.2010.6045172

Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing. / Ganesan, R.; Donia, N.; Mathur, S. et al.
ICONN 2010: proceedings of the 2010 International Conference on Nanoscience and Nanotechnology. ed. / Andrew Dzurak. Institute of Electrical and Electronics Engineers (IEEE), 2010. p. 49-50.

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

TY - GEN

T1 - Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing

AU - Ganesan, R.

AU - Donia, N.

AU - Mathur, S.

AU - Johnson, I.

PY - 2010

Y1 - 2010

N2 - Tin oxide (SnO₂) nanowires were synthesized by a molecule based chemical vapour deposition process and the metallic additives Sn and Au were incorporated by treating nanowires in the mixture of Argon and O₂ plasma. Tin inclusion in the SnO₂ nanowires were achieved by preferential etching of the lattice oxygen atoms from the surface of SnO₂ nanowires through the plasma treatment, which lead to chemically directed synthesis of Sn⁰/ SnO₂ nanocomposites. However, Gold incorporated nanowires were obtained by treating the Au sputtered samples (5-13 nm) at low plasma energy to induce nucleation of Au nanocrystals on SnO₂ backbone. Investigations on Carbon-monoxide (CO) sensing behaviour of SnO₂ nanostructures as a function of surface structure, composition and electronic properties are reported. Metal-functionalized nanowires showed better sensitivity for CO at lower operating temperature and exhibited higher transduction towards altering gas atmospheres attributed to a spill-over effect in Au incorporated tin oxide nanowires (AuTO), whereas the surface valence dynamics (Sn⁰/ Sn²⁺/ Sn⁴⁺) is responsible for higher sensitivity of Sn incorporated system (SnTO).

AB - Tin oxide (SnO₂) nanowires were synthesized by a molecule based chemical vapour deposition process and the metallic additives Sn and Au were incorporated by treating nanowires in the mixture of Argon and O₂ plasma. Tin inclusion in the SnO₂ nanowires were achieved by preferential etching of the lattice oxygen atoms from the surface of SnO₂ nanowires through the plasma treatment, which lead to chemically directed synthesis of Sn⁰/ SnO₂ nanocomposites. However, Gold incorporated nanowires were obtained by treating the Au sputtered samples (5-13 nm) at low plasma energy to induce nucleation of Au nanocrystals on SnO₂ backbone. Investigations on Carbon-monoxide (CO) sensing behaviour of SnO₂ nanostructures as a function of surface structure, composition and electronic properties are reported. Metal-functionalized nanowires showed better sensitivity for CO at lower operating temperature and exhibited higher transduction towards altering gas atmospheres attributed to a spill-over effect in Au incorporated tin oxide nanowires (AuTO), whereas the surface valence dynamics (Sn⁰/ Sn²⁺/ Sn⁴⁺) is responsible for higher sensitivity of Sn incorporated system (SnTO).

UR - https://www.scopus.com/pages/publications/80555143051

U2 - 10.1109/ICONN.2010.6045172

DO - 10.1109/ICONN.2010.6045172

M3 - Conference proceeding contribution

SN - 9781424452620

SP - 49

EP - 50

BT - ICONN 2010

A2 - Dzurak, Andrew

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - International Conference on Nanoscience and Nanotechnology (3rd : 2010)

Y2 - 22 February 2010 through 26 February 2010

ER -

Nanocatalytic effects in gold/tin functionalized tin oxide nanowires for enhanced co sensing

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