| 引用本文: | 杜海英,苏航,王兢,田江丽,徐国凯.纺丝法制备多级SnO2纳米纤维及其气敏特性研究[J].材料科学与工艺,2014,22(3):69-73.DOI:10.11951/j.issn.1005-0299.20140312. |
| DU Haiying,SU Hang,WANG Jing,TIAN Jiangli,XU Guokai.Preparation and gas sensing properties studies of SnO2 nanofibers based on electrospinning[J].Materials Science and Technology,2014,22(3):69-73.DOI:10.11951/j.issn.1005-0299.20140312. |
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| 摘要: |
| 为了提高SnO2的气敏性能,以PVP为有机溶剂,采用静电纺丝法制备了多级结构的SnO2纳米纤维,利用XRD,SEM和TEM等技术对材料的结构、形貌进行了表征,并制备了SnO2旁热式气敏元件.采用静态气体测试系统对SnO2元件进行了气敏测试.在工作温度300 ℃时,对0.5～50 ppm甲醛进行了气敏测试.测试结果表明:SnO2气敏元件对甲醛气体具有优异的响应灵敏度,快速的响应及响应恢复特性、较好的选择性.采用静电纺丝制备的多级结构SnO2纳米纤维对甲醛表现出良好的气敏特性. |
| 关键词: 纳米纤维 静电纺丝 气敏特性 甲醛 响应 |
| DOI：10.11951/j.issn.1005-0299.20140312 |
| 分类号:TN305 |
| 基金项目:国家自然科学基金资助项目(61176068； 61131004)；国家科技支撑计划资助项目(2009BAH41B05)；大连民族学院自主科研基金资助项目(DC12010301). |
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| Preparation and gas sensing properties studies of SnO2 nanofibers based on electrospinning |
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DU Haiying1,2, SU Hang2, WANG Jing1, TIAN Jiangli1, XU Guokai2
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(1.School of Electronic Science and Technology, DaLian University of Technology, Dalian 116024,China; 2.School of Electromechanical Engineering & Information, DaLian Nationalities University, Dalian 116600,China)
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| Abstract: |
| To improve the gas sensing properties of SnO2, using PVP as organic solvent, hierarchical SnO2 nanofibers was synthesized by electrospinning. The SnO2 nanofibers were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and transmission electron microscopy (TEM). A gas sensor was fabricated based on SnO2 nanofibers, of which the gas sensing properties were measured by a static gas test system. The response sensitivity of the SnO2 gas sensor was measured in formaldehyde concentration range of 0.5~50 ppm at operating temperature of 300 ℃. The SnO2 nanofibers sensor exhibited high response to formaldehyde, quickly response and response recover time and well cross responses. The SnO2 nanofibers based on electrospinning showed good gas sensing properties to formaldehyde. |
| Key words: nanofibers electrospinning gas sensing properties formaldehyde response |
