| Au修饰SnO2复合纳米材料的制备和气敏性能 |
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| 引用本文： | 陈雪松,卢秋虹,王海花,孙振华.Au修饰SnO2复合纳米材料的制备和气敏性能[J].材料研究学报,2012(4):349-354. |
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| 作者姓名： | 陈雪松 卢秋虹 王海花 孙振华 |
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| 作者单位： | 中国科学院金属研究所 |
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| 基金项目： | 国家自然科学基金51001098;中国科学院金属所科研基金09NBA211A1资助项目~~ |
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| 摘 要： | 以氯金酸和乙酰丙酮氯化锡为主要材料,通过一步水热法制备了SnO2和Au修饰的SnO2（Au/SnO2）纳米粒子.使用TEM、EDS、XRD和XPS等手段对样品的形貌、组成及结构进行表征,研究了两种材料对乙醇的气敏性能.结果表明,两种纳米颗粒的尺寸都比较均一,平均直径约为9-12 nm;SnO2为四方金红石结构,Au为面心立方结构;在Au/SnO2样品中,Au与SnO2的重量比为2.6%,Au元素主要以Au0的价态存在并含有少量的Au3+价态;与纯SnO2纳米粒子相比,Au修饰可显著提高气敏元件对乙醇响应的灵敏度和选择性。
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| 关 键 词： | 复合材料 SnO2 Au修饰 水热合成法 气敏性能 |
Synthesis and GAS Sensing Properties of Au-modified SnO2 Composite Nanomaterials |
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| CHEN Xuesong,LU Qiuhong,WANG Haihua,SUN Zhenhua.Synthesis and GAS Sensing Properties of Au-modified SnO2 Composite Nanomaterials[J].Chinese Journal of Materials Research,2012(4):349-354. |
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| Authors: | CHEN Xuesong LU Qiuhong WANG Haihua SUN Zhenhua |
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| Affiliation: | (**) (Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016) |
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| Abstract: | SnO2 and Au modified SnO2 nanoparticles were prepared by one-pot hydrothermal synthesis method with HAucl4 and SnCl2（acac）2.The morphology,composition and structure of the samples were analyzed by TEM,EDS,XRD and XPS,and the gas sensing performance of the two materials for ethanol was tested.The results show that the morphology of both samples is nanoparticle,and the average diameter is about 9-12 nm.The crystal structure of SnO2 is rutile type,and Au is face centered cubic structure.In the sample of Au/SnO2,the mass ratio of Au and SnO2 is 2.6%,and Au element exists with a mixture of Au0 and Au3+ valence states.Comparing with pure SnO2 nanoparticles,Au modifing can significantly improve the sensitivity and selectivity of the gas sensors on the response to ethanol. |
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| Keywords: | composite materials SnO2 Au-modified hydrothermal synthesis method gas sensing performance |
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