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| 论文编号: |
122214O120110300 |
| 第一作者所在部门: |
909组 |
| 中文论文题目: |
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| 英文论文题目: |
Structural Evolution of Plasma-Sputtered CoreShell Nanoparticles
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| 论文题目英文: |
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| 作者: |
郭向云
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| 论文出处: |
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| 刊物名称: |
J. Phys. Chem. C
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| 年: |
2011
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| 卷: |
115 |
| 期: |
22 |
| 页: |
11240 |
| 联系作者: |
郭向云 |
| 收录类别: |
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| 影响因子: |
4.524
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| 摘要: |
Fe@Pd, Fe@Pt, and Fe@Au coreshell nanoparticles
supported by silicon carbide have been prepared by
plasma sputtering deposition and employed as the catalyst for
methane combustion. The coreshell catalysts exhibit higher
activities than single metallic catalysts due to surface alloying
effects. With the surface alloying of the coreshell nanoparticles,
PdO and PtO bonds become weak because the
increase of the electron cloud density around Pd and Pt atoms
due to the electron transfer from surface Fe to Pd or Pt atoms.
Therefore, the activities of Fe@Pd/SiC and Fe@Pt/SiC increase
with the reaction time. The activity of Fe@Au/SiC keeps
invariant in the reaction because the Fe@Au coreshell
structure has high stability. Transmission electron microscopy and X-ray photoelectron spectroscopy results further confirm the
structural evolution. |
| 英文摘要: |
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| 外单位作者单位: |
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| 备注: |
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