Toluene sensing properties of SnO2-ZnO hollow nanofibers fabricated from single capillary electrospinning |
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| Authors: | Shaohong Wei Yan Zhang Meihua Zhou |
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| Institution: | a College of Environmental Science and Engineering, Donghua University, Shanghai 200051, Chinab College of Chemistry and Chemical Engineering, Anyang Normal University, Henan 455000, Chinac Department of Environmental and Municipal Engineering, Henan University of Urban Construction, Pingdingshan 467000, China |
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| Abstract: | SnO2-ZnO hollow nanofibers were fabricated through a facile single capillary electrospinning technology. The structure and toluene sensing properties of the hollow fibers were investigated. The results indicated that the fibers possess a hollow structure, a rough porous surface after being annealed at 600 °C and the diameters are in the range of 80-160 nm. A sensor fabricated from these fibers exhibits considerable sensitivity and good stability against toluene at 190 °C, which can be attributed to the special 1D hollow structure and the promoting effect of the SnO2/ZnO heterojunction. The formation mechanism and toluene sensing mechanism of SnO2-ZnO hollow nanofibers were also discussed. |
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| Keywords: | A Semiconductor B Single capillary electrospinning C Hollow nanofibers D Gas sensitivity |
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