Synthesis of SnO nanowires forCO, CH and CHOH gases sensing
Synthesis of one-dimensional nanostructures, such as nanowires, is of vigorous significance for achieving the desired properties and fabricating functional devices. In this work, we report the synthesis of tin oxide (SnO 2 ) nanowires on gold-catalyzed silicon substrate by carbothermal reduction pro...
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doaj-f5233f706f2d44fe837437eb6210d5832020-11-25T03:43:30ZengSAGE PublishingInternational Journal of Distributed Sensor Networks1550-14772018-08-011410.1177/1550147718790750Synthesis of SnO nanowires forCO, CH and CHOH gases sensingKhurram Shehzad0Nazar Abbas Shah1Muhammad Amin2Murrawat Abbas3Waqar Adil Syed4Department of Physics, Faculty of Basic and Applied Sciences, International Islamic University, Islamabad, PakistanThin Films Technology Laboratory, Department of Physics, COMSATS Institute of Information Technology, Islamabad, PakistanSchool of Materials, The University of Manchester, Manchester, UKRipha International University, Islamabad, PakistanDepartment of Physics, Faculty of Basic and Applied Sciences, International Islamic University, Islamabad, PakistanSynthesis of one-dimensional nanostructures, such as nanowires, is of vigorous significance for achieving the desired properties and fabricating functional devices. In this work, we report the synthesis of tin oxide (SnO 2 ) nanowires on gold-catalyzed silicon substrate by carbothermal reduction process. SnO 2 nanowires were synthesized with SnO 2 and graphite powders as the source materials at atmospheric pressure and temperature of 900°C in the ambience of nitrogen (N 2 ) gas. First, the effect of source material ratio SnO 2 :C on growth of SnO 2 nanowires was studied. The structural, morphological and compositional properties of the samples were investigated by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. The scanning electron microscopy investigation reveals that uniform dense nanowires of SnO 2 (diameter ~127 nm and length ~40 µm) were synthesized with vapour–liquid–solid mechanism. Ultraviolet–visible spectra estimate that the optical band gap of the synthesized SnO 2 nanowires was 3.72 eV. Second, the gas sensing performance of synthesized SnO 2 nanowires was investigated by testing with carbon monoxide (CO), Methane (CH 4 ) and methanol (CH 3 OH) gases at different operating temperatures and concentrations. Results indicate that the synthesized SnO 2 nanowires are highly promising for gas sensing applications.https://doi.org/10.1177/1550147718790750 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Khurram Shehzad Nazar Abbas Shah Muhammad Amin Murrawat Abbas Waqar Adil Syed |
spellingShingle |
Khurram Shehzad Nazar Abbas Shah Muhammad Amin Murrawat Abbas Waqar Adil Syed Synthesis of SnO nanowires forCO, CH and CHOH gases sensing International Journal of Distributed Sensor Networks |
author_facet |
Khurram Shehzad Nazar Abbas Shah Muhammad Amin Murrawat Abbas Waqar Adil Syed |
author_sort |
Khurram Shehzad |
title |
Synthesis of SnO nanowires forCO, CH and CHOH gases sensing |
title_short |
Synthesis of SnO nanowires forCO, CH and CHOH gases sensing |
title_full |
Synthesis of SnO nanowires forCO, CH and CHOH gases sensing |
title_fullStr |
Synthesis of SnO nanowires forCO, CH and CHOH gases sensing |
title_full_unstemmed |
Synthesis of SnO nanowires forCO, CH and CHOH gases sensing |
title_sort |
synthesis of sno nanowires forco, ch and choh gases sensing |
publisher |
SAGE Publishing |
series |
International Journal of Distributed Sensor Networks |
issn |
1550-1477 |
publishDate |
2018-08-01 |
description |
Synthesis of one-dimensional nanostructures, such as nanowires, is of vigorous significance for achieving the desired properties and fabricating functional devices. In this work, we report the synthesis of tin oxide (SnO 2 ) nanowires on gold-catalyzed silicon substrate by carbothermal reduction process. SnO 2 nanowires were synthesized with SnO 2 and graphite powders as the source materials at atmospheric pressure and temperature of 900°C in the ambience of nitrogen (N 2 ) gas. First, the effect of source material ratio SnO 2 :C on growth of SnO 2 nanowires was studied. The structural, morphological and compositional properties of the samples were investigated by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. The scanning electron microscopy investigation reveals that uniform dense nanowires of SnO 2 (diameter ~127 nm and length ~40 µm) were synthesized with vapour–liquid–solid mechanism. Ultraviolet–visible spectra estimate that the optical band gap of the synthesized SnO 2 nanowires was 3.72 eV. Second, the gas sensing performance of synthesized SnO 2 nanowires was investigated by testing with carbon monoxide (CO), Methane (CH 4 ) and methanol (CH 3 OH) gases at different operating temperatures and concentrations. Results indicate that the synthesized SnO 2 nanowires are highly promising for gas sensing applications. |
url |
https://doi.org/10.1177/1550147718790750 |
work_keys_str_mv |
AT khurramshehzad synthesisofsnonanowiresforcochandchohgasessensing AT nazarabbasshah synthesisofsnonanowiresforcochandchohgasessensing AT muhammadamin synthesisofsnonanowiresforcochandchohgasessensing AT murrawatabbas synthesisofsnonanowiresforcochandchohgasessensing AT waqaradilsyed synthesisofsnonanowiresforcochandchohgasessensing |
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