Synthesis and catalytic activity of hybrid metal/silicon nanocomposites
Synthesis and catalytic activity of hybrid metal/silicon nanocomposites
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DOI：
10.1002/pssr.200802076
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发表时间：
2008-06
期刊：
影响因子：
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通讯作者：
Sergej Polisski;B. Goller;A. Lapkin;S. Fairclough;D. Kovalev
中科院分区：
文献类型：
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作者：
Sergej Polisski;B. Goller;A. Lapkin;S. Fairclough;D. Kovalev
在这封信中，我们证明了端氢多孔硅(PSI)层和粉末可以作为贵金属盐的高效还原模板。还原反应导致金属纳米颗粒(NP)在PSI的孔道中形成。通过测量等离子体共振响应，对金纳米粒子的形成进行了原位监测。用透射电子显微镜和X射线能谱分析研究了PSI基质中生成的PtNPs。此外，杂化铂/PSi纳米复合材料对CO氧化具有很高的催化活性。
In this Letter we demonstrate that hydrogen‐terminated porous silicon (PSi) layers and powders can serve as highly efficient reductive templates for noble metal salts. The reduction results in metal nanoparticle (NP) formation in the pores of PSi. Gold NP formation has been monitored in‐situ by measuring the plasmon resonance response. Pt NPs, formed in the PSi matrix, were investigated by transmission electron microscopy and energy‐dispersive X‐ray analysis. Furthermore, hybrid Pt/PSi nanocomposites exhibit a high catalytic activity for CO oxidation.