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| 论文编号: |
122214O120120049 |
| 第一作者所在部门: |
909组 |
| 中文论文题目: |
Structural Evolution of Plasma-Sputtered Core-Shell Nanoparticles for Catalytic Combustion of Methane
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| 英文论文题目: |
Structural Evolution of Plasma-Sputtered Core-Shell Nanoparticles for Catalytic Combustion of Methane
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| 论文题目英文: |
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| 作者: |
Brault, P
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| 论文出处: |
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| 刊物名称: |
Journal of Physical Chemistry C
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| 年: |
2011
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| 卷: |
115 |
| 期: |
49 |
| 页: |
24164 |
| 联系作者: |
Brault, P |
| 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 core shell catalysts exhibit higher activities than single metallic catalysts due to surface alloying effects. With the surface alloying of the core shell nanoparticles, Pd-O and Pt-O 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 core shell 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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