| 表面改性四针状纳米ZnO结构与气敏性能研究 |
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| 引用本文： | 高硬日,张顺平,曾大文,谢长生.表面改性四针状纳米ZnO结构与气敏性能研究[J].传感器与微系统,2008,27(8). |
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| 作者姓名： | 高硬日 张顺平 曾大文 谢长生 |
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| 作者单位： | 华中科技大学,材料学院,模具技术国家重点实验室,湖北,武汉,430074 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金 |
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| 摘 要： | 将4种质量分数(5%,10%,20%,30%)的Co(CH3COO)24H2O混合到四针状纳米ZnO原料里,采用超声化学浸泡法制备出表面改性四针状纳米ZnO颗粒。通过XRD和TEM分析了表面改性四针状纳米ZnO结构的物相和形貌特征。随着Co(CH3COO)24H2O质量分数增大,Co3O4相明显出现,Co3O4相沉积在ZnO表面上。研究表明:以表面改性四针状纳米ZnO粉末为原料制备的厚膜气敏元件,与纯ZnO气敏元件相比,Co(CH3COO)24H2O质量分数为5%的气敏元件对酒精和甲醇有较高的灵敏度,并讨论了表面改性对气敏性能的影响。
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| 关 键 词： | 表面改性四针状纳米ZnO 电性能 气敏性能 超声化学浸泡法 |
Research on structure and gas sensing properties of surface-modified zinc oxide nanotetrapods |
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| GAO Ying-ri,ZHANG Shun-ping,ZENG Da-wen,XIE Chang-sheng.Research on structure and gas sensing properties of surface-modified zinc oxide nanotetrapods[J].Transducer and Microsystem Technology,2008,27(8). |
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| Authors: | GAO Ying-ri ZHANG Shun-ping ZENG Da-wen XIE Chang-sheng |
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| Abstract: | Four kinds of quality fraction(5%,10%,20%,30%)cobalt acetate is mixed into ZnO nanotetrapods raw materials,surface-modified ZnO nanotetrapods are prepared by the sonochemical marinate method.The phase structure,morphology of surface-modified ZnO nanotetrapods are investigated by XRD and TEM.The result indicates that along with the increase of cobalt acetate,Co3O4 phase appears clearly and deposits on the surface of ZnO.Surface-modified ZnO nanotetrapods is fabricated with the thick film gas element.Comparing to pure nano-ZnO,5%cobalt acetate qualityt fraction sample has high sensitivity to ethanol and methanol,and the influence of surface-modified on gas sensitivity is discussed. |
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| Keywords: | surface-modified ZnO nanotetrapods electrical property gas sensitivity sonochemical marinate method |
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