Abstract
Co-SnO2 composite nanofibers were synthesized by an electrospinning method and characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Gas sensors were fabricated by spinning these nanofibers onto flat ceramic substrates, which had signal electrodes and heaters on their top and bottom surfaces, respectively. Compared with sensors loaded with pure SnO2 nanofibers, the Co-SnO2 nanofiber sensors exhibited improved acetone sensing properties with high selectivity and rapid response and recovery times. The response was 33 when the sensors were exposed to 100 μL/L acetone at 330°C, and the corresponding response with 100 μL/L of ethanol was only 6. The response and recovery times to acetone were about 5 and 8 s, respectively. These results indicate Co-SnO2 composite nanofibers are good candidates for fabrication of high performance acetone sensors for practical application.
Article PDF
Similar content being viewed by others
Explore related subjects
Find the latest articles, discoveries, and news in related topics.Avoid common mistakes on your manuscript.
References
Narsan N, Koziej D, Weimar U. Metal oxide-based gas sensor research: How to? Sens Actuators B, 2007, 121: 18–35
Liu L, Zhuang J, Liu K X, et al. Improved and excellent ethanol sensing properties of SnO2/multiwalled carbon nanotubes. Chinese Sci Bull, 2010, 55: 382–385
Tang H, Li Y, Zheng C, et al. An ethanol sensor based on cataluminescence on ZnO nanoparticles. Talanta, 2007, 72: 1593–1597
Deb B, Desai S, Sumanasekera G U, et al. Gas sensing behaviour of mat-like networked tungsten oxide nanowire thin films. Nanotechnology, 2007, 18: 285501
Tan E T H, Ho G W, Wong A S W, et al. Gas sensing properties of tin oxide nanostructures synthesized via a solid-state reaction method. Nanotechnology, 2008, 19: 255706
Liu L, Zhang T, Li S C, et al. Micro-structure sensor based on ZnO microcrystals with contact-controlled ethanol sensing. Chinese Sci Bull, 2009, 54: 4371–4375
Qi Q, Zhang T, Liu L, et al. Synthesis and toluene sensing properties of SnO2 nanofibers. Sens Actuators B, 2009, 137: 471–475
Olbrechts B, Rue B, Suski J, et al. Characterization of FD SOI devices and VCO’s on thin dielectric membranes under pressure. Solid-State Electron, 2007, 51: 1229–1237
Wang D, Chu X, Gong M. Hydrothermal growth of ZnO nanoscrewdrivers and their gas sensing properties. Nanotechnology, 2007, 18: 185601
Franke M E, Koplin T J, Simon U. Metal and metal oxide nanoparticles in chemiresistors: Does the nanoscale matter? Small, 2006, 3: 36–50
Kolmakov A, Moskovits M. Chemical sensing and catalysis by onedimensional metal-oxide nanostructures. Annu Rev Mater Res, 2004, 34: 151–180
Chen Y, Zhu C, Wang T. The enhanced ethanol sensing properties of multi-walled carbon nanotubes/SnO2 core/shell nanostructures. Nanotechnology, 2006, 17: 3012–3017
Li C C, Du Z F, Li L M, et al. Surface-depletion controlled gas sensing of ZnO nanorods grown at room temperature. Appl Phys Lett, 2007, 91: 032101
Gong H, Wang Y J, Teo S C, et al. Interaction between thin-film tin oxide gas sensor and five organic vapors. Sens Actuators B, 1999, 54: 232–235
Jing Z, Wu S. Synthesis, characterization and gas sensing properties of undoped and Co-doped γ-Fe2O3-based gas sensors. Mater Lett, 2006, 60: 952–956
Jie Z, Hua H L, Shan G, et al. Alcohols and acetone sensing properties of SnO2 thin films deposited by dip-coating. Sens Actuators B, 2006, 115: 460–464
Huang J, Wan Q. Gas sensors based on semiconducting metal oxide one-dimensional nanostructures. Sensors, 2009, 9: 9903–9924
Li D, Xia Y. Electrospinning of nanofibers: Reinventing the wheel? Adv Mater, 2004, 16: 1151–1170
Kim I D, Rothschild A, Lee B H, et al. Ultrasensitive chemiresistors based on electrospun TiO2 nanofibers. Nano Lett, 2006, 6: 2009–2013
Liu Z, Sun D D, Guo P, et al. An efficient bicomponent TiO2/SnO2 nanofiber photocatalyst fabricated by electrospinning with a side-byside dual spinneret method. Nano Lett, 2007, 7: 1081–1085
Mccann J T, Li D, Xia Y. Electrospinning of nanofibers with core-sheath, hollow, or porous structures. J Mater Chem, 2005, 15: 735–738
Madhugiri S, Sun B, Smirniotis P G, et al. Electrospun mesoporous titanium dioxide fibers. Micropor Mesopor Mater, 2004, 69: 77–83
Sahm T, Mädler L, Gurlo A, et al. Flame spray synthesis of tin dioxide nanoparticles for gas sensing. Sens Actuators B, 2004, 98: 148–153
Huang X J, Choi Y K. Chemical sensors based on nanostructured materials. Sens Actuators B, 2007, 122: 659–671
Zhao H M, Chen Y, Quan X, et al. Preparation of Zn-doped TiO2 nanotubes electrode and its application in pentachlorophenol photoelectro-catalytic degradation. Chinese Sci Bull, 2007, 52: 1456–1457
Ji H M, Lu H X, Ma D F, et al. Preparation and hydrogen gas sensitive characteristics of highly ordered titania nanotube arrays. Chinese Sci Bull, 2008, 53: 1352–1357
Wan Q, Li Q H, Chen Y J, et al. Fabrication and ethanol sensing characteristics of ZnO nanowire gas sensors. Appl Phys Lett, 2004, 84: 3654–3656
Zhang Y, He X, Li J, et al. Fabrication and ethanol-sensing properties of micro gas sensor based on electrospun SnO2 nanofibers. Sens Actuators B, 2008, 132: 67–73
Kirby K W, Kimura H. Rapid evaluation processes for candidate CO and HC sensor materials: Examination of SnO2, CO3O4, and CuxMn3−x O4 (1<x⩽1.5). Sens Actuators B, 1996, 32: 49–56
Choi U S, Sakai G, Shimanoe K, et al. Sensing properties of SnO2-Co3O4 composites to CO and H2. Sens Actuators B, 2004, 98: 166–173
Patil L A, Patil D R. Heterocontact type CuO-modified SnO2 sensor for the detection of a ppm level H2S gas at room temperature. Sens Actuators B, 2006, 120: 316–323
Choi J D, Choi G M. Electrical and CO gas sensing properties of layered ZnO-CuO sensor. Sens Actuators B, 2000, 69: 120–126
Author information
Authors and Affiliations
Corresponding author
Additional information
This article is published with open access at Springerlink.com
Rights and permissions
This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
About this article
Cite this article
Hu, L., Li, Y. Improved acetone sensing properties of flat sensors based on Co-SnO2 composite nanofibers. Chin. Sci. Bull. 56, 2644–2648 (2011). https://doi.org/10.1007/s11434-011-4558-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11434-011-4558-0