Au修饰SnO_2复合纳米材料的制备和气敏性能
Synthesis and GAS Sensing Properties of Au-modified SnO_2 Composite Nanomaterials
查看参考文献22篇
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文摘
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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SnO_2和Au修饰的SnO_2（Au/SnO_2）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;SnO_2为四方金红石结构,Au为面心立方结构;在Au/SnO_2样品中,Au与SnO_2的重量比为2.6%,Au元素主要以Au~0的价态存在并含有少量的Au~(3+)价态;与纯SnO_2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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其他语种文摘
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SnO_2 and Au modified SnO_2 nanoparticles were prepared by one-pot hydrothermal synthesis method with HAucl_4 and SnCl_2（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 SnO_2 is rutile type,and Au is face centered cubic structure.In the sample of Au/SnO_2,the mass ratio of Au and SnO_2 is 2.6%,and Au element exists with a mixture of Au~0 and Au~(3+) valence states.Comparing with pure SnO_2 nanoparticles,Au modifing can significantly improve the sensitivity and selectivity of the gas sensors on the response to ethanol. |
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来源
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材料研究学报
,2012,26(4):349-354 【核心库】
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关键词
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复合材料
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SnO_2
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Au修饰
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水热合成法
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气敏性能
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地址
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中国科学院金属研究所, 沈阳, 110016
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语种
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中文 |
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ISSN
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1005-3093 |
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学科
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一般工业技术 |
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基金
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国家自然科学基金
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中国科学院金属所科研基金
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文献收藏号
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CSCD:4626031
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