一维Ga2O3/SnO2纳米纤维的制备及其气敏性能
Preparation and Gas-Sensing Properties of One-Dimensional Ga2O3/SnO2 Nanofibers
作者单位E-mail
吴海燕 安徽工业大学化学与化工学院, 马鞍山 243032  
干正强 安徽工业大学化学与化工学院, 马鞍山 243032  
储向峰 安徽工业大学化学与化工学院, 马鞍山 243032 maschem@sohu.com 
梁士明 临沂大学材料科学与工程学院, 临沂 276005 lsmwind@163.com 
何利芳 安徽工业大学化学与化工学院, 马鞍山 243032  
摘要: 通过静电纺丝法制备了一维Ga2O3/SnO2纳米纤维,采用X射线衍射(XRD)、扫描电镜(SEM)、紫外可见漫反射光谱(UV-Vis DRS)等方法对材料进行了表征,测试了不同Ga2O3质量分数(0、40%、50%、60%、70%、100%)的Ga2O3/SnO2纳米纤维(650℃,5 h)对应元件对三甲胺、丙酮、乙醛、乙酸、氨气、乙醇、甲醛7种气体的气敏性能。结果表明:在室温(25℃)时,60%(w/w)Ga2O3-40%(w/w)SnO2纳米纤维对三甲胺气体具有较高的灵敏度和较短的响应/恢复时间。对1 000 μL·L-1三甲胺的灵敏度达到51;检出限达到0.8 μL·L-1,其灵敏度为1.3。
关键词: Ga2O3/SnO2  气敏性能  静电纺丝法  三甲胺  纳米纤维
基金项目: 国家自然科学基金(No.61671019,61603001)资助项目。
Abstract: Ga2O3/SnO2 one-dimensional nanofibers were prepared by electrospinning method. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Visible diffuse reflection spectrum (UV-Vis DRS), etc. Gas-sensing properties of Ga2O3/SnO2 (650℃, 5 h) nanofibers with different Ga2O3 mass fractions (0, 40%, 50%, 60%, 70wt%, 100%) were prepared. The responses of gas sensors made from Ga2O3/SnO2 (650℃, 5 h) nanofibers to seven kinds of gases including trimethylamine, acetone, acetaldehyde, acetic acid, ammonia, ethanol and formaldehyde were investigated. The results showed that the 60%(w/w) Ga2O3-40%(w/w) SnO2 nanofibers had a higher response to trimethylamine, shorter response/recovery time; at room temperature (25℃), the response of this composite material to 1 000 μL·L-1 trimethylamine reached 51, the minimum detection limit for trimethylamine could reach 0.8 μL·L-1 and the response was 1.3.
Keywords: Ga2O3/SnO2  gas-sensing properties  electrospinning  trimethylamine  nanofibers
投稿时间:2019-09-09 修订日期:2019-11-01
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吴海燕,干正强,储向峰,梁士明,何利芳.一维Ga2O3/SnO2纳米纤维的制备及其气敏性能[J].无机化学学报,2020,35(2):309-316.
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