Synthesis and Characterization of Single-Crystalline SnO2 Nanowires
Tin oxide (SnO2) nanowires were synthesized on oxidized silicon substrates by thermal evaporation of tin grains at 900°C in Ar flow at ambient pressure. Structural characterization using X-ray diffraction and transmission electron microscopy shows that SnO2 nanowires have a single crystal tetragonal...
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Series: | Journal of Nanomaterials |
Online Access: | http://dx.doi.org/10.1155/2013/761498 |
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doaj-4e68b764f0174886920264564bf36e232020-11-24T22:54:23ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292013-01-01201310.1155/2013/761498761498Synthesis and Characterization of Single-Crystalline SnO2 NanowiresDezhou Wei0Yanbai Shen1Mingyang Li2Wengang Liu3Shuling Gao4Lijun Jia5Cong Han6Baoyu Cui7College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaTin oxide (SnO2) nanowires were synthesized on oxidized silicon substrates by thermal evaporation of tin grains at 900°C in Ar flow at ambient pressure. Structural characterization using X-ray diffraction and transmission electron microscopy shows that SnO2 nanowires have a single crystal tetragonal structure. Scanning electron microscopy observation demonstrates that SnO2 nanowires are 30–200 nm in diameter and several tens of micrometers in length. The surface vibration mode resulting from the nanosize effect at 565.1 cm−1 was found from the Fourier transform infrared spectrum. The formation of SnO2 nanowires follows a vapour-solid (VS) growth mechanism. The gas sensing measurements indicate that SnO2 nanowire gas sensor obtains peak sensitivity at a low operating temperature of 150°C and shows reversible response to H2 gas (100–1000 ppm) at an operating temperature of RT-300°C.http://dx.doi.org/10.1155/2013/761498 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dezhou Wei Yanbai Shen Mingyang Li Wengang Liu Shuling Gao Lijun Jia Cong Han Baoyu Cui |
spellingShingle |
Dezhou Wei Yanbai Shen Mingyang Li Wengang Liu Shuling Gao Lijun Jia Cong Han Baoyu Cui Synthesis and Characterization of Single-Crystalline SnO2 Nanowires Journal of Nanomaterials |
author_facet |
Dezhou Wei Yanbai Shen Mingyang Li Wengang Liu Shuling Gao Lijun Jia Cong Han Baoyu Cui |
author_sort |
Dezhou Wei |
title |
Synthesis and Characterization of Single-Crystalline SnO2 Nanowires |
title_short |
Synthesis and Characterization of Single-Crystalline SnO2 Nanowires |
title_full |
Synthesis and Characterization of Single-Crystalline SnO2 Nanowires |
title_fullStr |
Synthesis and Characterization of Single-Crystalline SnO2 Nanowires |
title_full_unstemmed |
Synthesis and Characterization of Single-Crystalline SnO2 Nanowires |
title_sort |
synthesis and characterization of single-crystalline sno2 nanowires |
publisher |
Hindawi Limited |
series |
Journal of Nanomaterials |
issn |
1687-4110 1687-4129 |
publishDate |
2013-01-01 |
description |
Tin oxide (SnO2) nanowires were synthesized on oxidized silicon substrates by thermal evaporation of tin grains at 900°C in Ar flow at ambient pressure. Structural characterization using X-ray diffraction and transmission electron microscopy shows that SnO2 nanowires have a single crystal tetragonal structure. Scanning electron microscopy observation demonstrates that SnO2 nanowires are 30–200 nm in diameter and several tens of micrometers in length. The surface vibration mode resulting from the nanosize effect at 565.1 cm−1 was found from the Fourier transform infrared spectrum. The formation of SnO2 nanowires follows a vapour-solid (VS) growth mechanism. The gas sensing measurements indicate that SnO2 nanowire gas sensor obtains peak sensitivity at a low operating temperature of 150°C and shows reversible response to H2 gas (100–1000 ppm) at an operating temperature of RT-300°C. |
url |
http://dx.doi.org/10.1155/2013/761498 |
work_keys_str_mv |
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1725660233777283072 |