| 一种无铼二代镍基单晶高温合金蠕变机制研究 |
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| 引用本文： | 于兴福,杜洪强,田素贵,宁 英,王铁军,崔树森.一种无铼二代镍基单晶高温合金蠕变机制研究[J].稀有金属材料与工程,2012,41(10):2185-2190. |
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| 作者姓名： | 于兴福 杜洪强 田素贵 宁 英 王铁军 崔树森 |
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| 作者单位： | 宿州学院自旋电子与纳米材料安徽省重点实验室培育基地,安徽宿州,234000 |
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| 基金项目： | 国家自然科学基金，安徽省教育厅自然科学研究重大项目，重点项目 |
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| 摘 要： | 利用层层静电自组装技术将聚乙烯亚胺(PEI-Ag+)、PdCl42-交替沉积在基底上,然后用硼氢化钠还原,构筑了含银/钯复合纳米粒子的PEI-Ag/Pd纳米复合薄膜.通过扫描电子显微镜(FESEM),X射线光电子能谱(XPS)和循环伏安(CV)等手段对复合膜的成分、微结构和性质进行了测试分析.膜上生成了不规则和立方体状的银/钯纳米复合物,导致膜表面有一定的粗糙度.结果表明,双金属{PEI-Ag/Pd}n复合膜比单金属{PEI/Pd}n或{PEI-Ag/PSS}n膜对多巴胺的氧化有更好的电催化活性.
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| 关 键 词： | Ag/Pd纳米复合薄膜 层层自组装 电催化 |
| 收稿时间： | 2011/11/11 0:00:00 |
Creep Deformation Mechanism in the Rhenium Free Second Generation Nickel-base Single Crystal Superalloy |
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| Yu Xingfu,Du Hongqiang,Tian Sugui,Ning Ying,Wang Tiejun and Cui Shusen.Creep Deformation Mechanism in the Rhenium Free Second Generation Nickel-base Single Crystal Superalloy[J].Rare Metal Materials and Engineering,2012,41(10):2185-2190. |
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| Authors: | Yu Xingfu Du Hongqiang Tian Sugui Ning Ying Wang Tiejun and Cui Shusen |
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| Affiliation: | Anhui Key Laboratory of Spin Electron and Nanomaterials (Cultivating Base), Suzhou University, Suzhou 234000, China |
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| Abstract: | Nanocomposite thin films containing Ag/Pd nanoparticles PEI-Ag/Pd were formed by alternating adsorption of PEI-Ag+ and PdCl42- by a layer-by-layer self-assembly technique and subsequent postdeposition reduction by sodium borohydride (NaBH4). The composition, microstructure and properties were characterized by field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV). The Ag/Pd nanocomposites which are irregular and cubic are formed in the films, resulting in a rough surface of the composite film. The results indicate that the {PEI-Ag/Pd}n nanocomposite film exhibits better electrocatalytic activity for the oxidation of dopamine than {PEI/Pd}n and {PEI-Ag/PSS}n films |
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| Keywords: | Ag/Pd nanocomposite thin film layer-by-layer self-assembly electrocatalysis |
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