Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/1904
Title: VOC sensors based on a metal oxide nanofibrous membrane/QCM system prepared by electrospinning
Authors: Horzum Polat, Nesrin
Taşçıoğlu, Didem
Özbek, Cebrail
Okur, Salih
Demir, Mustafa Muammer
Horzum Polat, Nesrin
Taşçıoğlu, Didem
Özbek, Cebrail
Okur, Salih
Demir, Mustafa Muammer
Keywords: Aqueous solution
Crystal structure
Infrared spectroscopy
Surface property
Metal nanoparticle
Issue Date: Aug-2014
Publisher: Royal Society of Chemistry
Source: Horzum, N., Taşçıoğlu, D., Özbek, C., Okur, S., and Demir, M. M. (2014). VOC sensors based on a metal oxide nanofibrous membrane/QCM system prepared by electrospinning. New Journal of Chemistry, 38(12), 5761-5768. doi:10.1039/c4nj00884g
Abstract: We report a simple synthetic route to fabricate crystalline ZnO and CeO2/ZnO nanofibrous mats and their sensing characteristics against volatile organic compounds (VOCs) such as benzene, propanol, ethanol, and dichloromethane. Precursor fibers were fabricated by electrospinning of poly(vinyl alcohol) and metal salt(s) at 2.5 kV cm-1 in aqueous solution. The fibers were directly deposited on the crystal surface of a quartz crystal microbalance (QCM). The crystal, which was coated by nanostructured PVA/metal precursor(s) fibers, was subjected to calcination in air at 500 °C for 5 h. The formation of an oxide based nanofiber mat was revealed by scanning electron microscopy and X-ray diffraction. Upon exposure of the nanofiber mats to the VOCs, the compounds adsorbed onto the surface of oxidic fibers. The physisorption of the compounds was confirmed by FTIR and QCM. Both systems showed sensitivity to the VOCs and they hold a broad promise particularly for sensing applications of volatile alcoholic compounds. The introduction of CeO2 into the ZnO structure reduced the sensitivity of ZnO most probably due to the decrement of oxygen vacancies.
URI: http://doi.org/10.1039/c4nj00884g
http://hdl.handle.net/11147/1904
ISSN: 1144-0546
1144-0546
1369-9261
Appears in Collections:Chemistry / Kimya
Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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