| ZnO负载SnO2复合材料的制备及其气敏性能 |
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| 引用本文： | 魏莹,仪桂云,王晓冬,许亚威,周利星.ZnO负载SnO2复合材料的制备及其气敏性能[J].化工进展,2018,37(2):651-657. |
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| 作者姓名： | 魏莹 仪桂云 王晓冬 许亚威 周利星 |
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| 作者单位： | 1.河南理工大学材料科学与工程学院, 河南 焦作 454000;2.河南理工大学环境友好型无机材料河南省高校重点实验室培育基地, 河南 焦作 454000 |
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| 基金项目： | 国家自然科学基金（51404097，61474038，51404097）、河南省科技攻关项目（132102210251）及河南省高等学校重点科研项目计划（15A430027）。 |
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| 摘 要： | 以五水四氯化锡（SnCl4·5H2O）和乙酸锌Zn （AC）2·2H2O]为原料，氢氧化钠（NaOH）为沉淀剂，采用简单的水热法，使二氧化锡（SnO2）纳米颗粒锚定在蚕蛹状氧化锌（ZnO）表面，一步成功合成了二氧化锡/氧化锌（SnO2/ZnO）复合材料。采用X射线衍射仪（XRD）、透射电镜（TEM）、高分辨透射电镜（HRTEM）和氮气吸附脱附仪（BET）对材料的结构和形貌进行了表征，研究并讨论了温度、乙醇浓度等因素对SnO2、ZnO及SnO2/ZnO复合材料气敏性能的影响。结果表明，所得样品为SnO2纳米颗粒与蚕蛹状ZnO的复合物，SnO2纳米颗粒较均匀地负载在ZnO表面。SnO2/ZnO复合材料气敏元件在最佳工作温度为240℃时，对200μL/L乙醇的灵敏度达到39.68，与SnO2（24.53）及ZnO （17.8）相比，气敏性能得到了很大的提高。
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| 关 键 词： | 二氧化锡/氧化锌 粒子 水热 复合材料 气敏性能 选择性 |
| 收稿时间： | 2017-05-16 |
Preparation and sensing properties of ZnO supporting SnO2 nanocomposites |
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| WEI Ying,YI Guiyun,WANG Xiaodong,XU Yawei,ZHOU Lixing.Preparation and sensing properties of ZnO supporting SnO2 nanocomposites[J].Chemical Industry and Engineering Progress,2018,37(2):651-657. |
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| Authors: | WEI Ying YI Guiyun WANG Xiaodong XU Yawei ZHOU Lixing |
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| Affiliation: | 1 Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China;
2 Key Laboratory Cultivation Base of Environment-Friendly Inorganic Materials in Henan Province, Henan Polytechnic University, Jiaozuo 454000, Henan, China |
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| Abstract: | SnO2/ZnO composites were synthesized by a facile hydrothermal method using SnCl4·5H2O and Zn(AC)2·2H2O as the raw material and NaOH as the precipitant, which makes SnO2 nanoparticles adhere to the surface of silkworm chrysalis-like ZnO. The structure and morphology of the obtained materials were characterized by XRD, TEM, HRTEM and BET. And the effects of temperature, ethanol concentration and other factors on the sensitivity were inverstigated. The results confirmed that the composite materials were SnO2 nanoparticles and silkworm chrysalis-like ZnO. The SnO2 nanoparticles were distributed on the surface of ZnO. The SnO2/ZnO composite exhibited good gas-sensing properties, and the sensitivity of the sensor to 200μL/L ethanol was 39.68 at the optimum operating temperature (240℃), which were almost double of that of the individual SnO2(24.53) and ZnO sensor(17.8). |
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| Keywords: | SnO2/ZnO particles hydrothermal composites gas-sensing properties selectivity |
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