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Preparation and Acetone Sensitivities of Y-doped ZnO Nanofibers by Electrispinning
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[1]Feng Qiuxia,Yu Peng,Wang Jing,et al.Preparation and Acetone Sensitivities of Y-doped ZnO Nanofibers by Electrispinning[J].Journal of Zhengzhou University (Engineering Science),2016,37(02):54-57.[doi:10.3969/j.issn.1671-6833.201511028]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 37卷 Number of periods: 2016 02 Page number: 54-57 Column: Public date: 2016-04-18
Title:
Preparation and Acetone Sensitivities of Y-doped ZnO Nanofibers by Electrispinning
Author(s):
Feng Qiuxia1; Yu Peng2; Wang Jing2; Li Xiaoqian2
1. School of Electronic Science and Technology, Dalian University of Technology, Dalian, Liaoning 116023; 2. Department of Electronic Engineering, Dalian Neusoft Institute of Information, Dalian, Liaoning 116023; 3. School of Electronic Science and Technology, Dalian University of Technology, Dalian, Liaoning 116023
Keywords:
electrospinning; ZnO nanofibers; Y dopant; acetone sensor
CLC:
-
DOI:
10.3969/j.issn.1671-6833.201511028
Abstract:
In order to improve the gas-sensing response of ZnO to acetone, yttrium-doped ZnO nanofibers were prepared by electrospinning using a precursor solution made of PVP/Zn(NO3) 6H2O/Y(NO3)3 6H2O, etc. The prepared pure ZnO and doped ZnO samples were characterized by XRD, SEM and other characterization methods. The prepared pure ZnO and yttrium-doped ZnO nanofibers were made into resistive gas sensors. The gas sensor test results showed that Y Doping effectively improves the sensitivity of ZnO nanofibers to acetone gas. At 440 °C, it has a good response to 1×10-6-200×10-6 (volume fraction) acetone, and the response time is 14-40 s. The recovery time is 20-55 s, the response value to 100×10-6 acetone is about 70 (S=Ra/Rg), and it has good selectivity to ethanol, ammonia, methanol, formaldehyde, toluene and benzene. At the same time, the sensitivity mechanism of the material to acetone was analyzed.
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