| 超声喷雾共沉淀法制备纳米氧化锡粉体及其气敏性研究 |
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| 引用本文： | 和宁宁,夏海平,王冬杰.超声喷雾共沉淀法制备纳米氧化锡粉体及其气敏性研究[J].中国稀土学报,2011,29(1). |
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| 作者姓名： | 和宁宁 夏海平 王冬杰 |
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| 作者单位： | 1. 宁波大学光电子功能材料重点实验室,浙江,宁波,315211
2. 宁波大学材料科学与化学工程学院,浙江,宁波,315211 |
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| 基金项目： | 国家自然科学基金，浙江省杰出青年科学自然基金，宁波市自然科学基金，宁波大学王宽诚幸福基金 |
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| 摘 要： | 采用超声波喷雾技术,以SnCl4·5H2O和CO(NH2)2为前驱体原料制备了氧化锡以及Ce稀土离子掺杂纳米粉体.详细地研究了超声喷雾条件、反应时间以及化学组分对纳米SnO2粉体的形貌和尺寸的影响规律,以及前驱体沉淀物脱水化学处理的条件.用XRD,TEM研究了所获纳米粒子的晶相和形貌.结果表明,制备的SnO2纳米粒子呈球状,尺寸在10～20 nm,纳米颗粒均匀,分散性好.以该粉体为基础制备了相应的气敏元件,测定了气体灵敏度与温度和稀土元素掺杂的关系.研究测试表明,纳米SnO2半导体气敏元件对NO2气体有着良好的响应-恢复特性,并且具有较高的灵敏度和较低的工作温度.稀土元素铈的掺杂能明显提高纳米SnO2粉体的气敏性能.
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| 关 键 词： | 纳米SnO2粉体 Ce元素 超声喷雾共沉淀法 气敏性能 |
Gas Sensing Characteristics of Nano-SnO2 Prepared by Ultrasonic Atomization and Co-Precipitation Method |
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| He Ningning,Xia Haiping,Wang Dongjie.Gas Sensing Characteristics of Nano-SnO2 Prepared by Ultrasonic Atomization and Co-Precipitation Method[J].Journal of the Chinese Rare Earth Society,2011,29(1). |
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| Authors: | He Ningning Xia Haiping Wang Dongjie |
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| Institution: | He Ningning1,Xia Haiping1,Wang Dongjie2(1.Key Laboratory of Photo-Electronic Functional Materials,Ningbo University,Ningbo 315211,China,2.The Faculty of Materials Science and Chemical Engineering,China) |
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| Abstract: | The nano-SnO2 and Ce3+ doped SnO2 powders were prepared by ultrasonic atomization and co-precipitation method with SnCl4 and CO(NH2)2 as raw materials.The effects of the ultrasonic spraying condition,the reaction time and chemical composition on the morphology of SnO2 nano-powder and size were carefully investigated.And a focused study on the chemical processing condition of the zinc hydroxide dehydrated to SnO2 nano-powder was carried out.The XRD and SEM were employed to characterize the phase and morpholo... |
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| Keywords: | nano-SnO2 powder Ce element ultrasonic atomization and co-precipitation method gas sensing characteristics |
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