| 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 |
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| 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,2020,36(2):309-316. |
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