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chemistryaaa

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[求助] 双金属界面问题

在单个双金属纳米颗粒中能够明显观察到两种金属各自的晶格条纹,说明双金属之间没有形成合金,而是以“手拉手”的形式存在,请问,在这种结构中,双金属之间可否说有界面存在,这种界面可以产生那些效应,如电荷的重新分配等,与之相关的文献或关键词有哪些?请高手予以指点。谢谢
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【答案】应助回帖

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感谢参与,应助指数 +1
非文王木木: 金币+2, 感谢交流·····欢迎常来 2013-08-11 11:47:34
chemistryaaa: 金币+5, ★★★很有帮助 2013-08-15 16:40:32
chemistryaaa: 金币+3, ★★★很有帮助 2013-08-22 06:17:27
在甲烷重整反应中,做过Ni-NrO2的颗粒分布,有点像你说的那种情况,进一步的试验发现界面处可以裂解CO2,促进整个重整反应进行!
Methane autothermal reforming with CO2 and O2 to synthesis gas at the boundary between Ni and ZrO2
International Journal of Hydrogen Energy, Volume 34, Issue 9, May 2009, Pages 3734-3742

另外,在碳纳米管外面负载的Pt-Bi2O3间也是类似的结构,据说这种结构在甘油的氧化反应中具有site-block作用,可以促进仲位羟基的氧化!
Chinese Journal of Catalysis, Volume 32, Issues 11–12, November–December 2011, Pages 1831-1837
Applied Catalysis B: Environmental, Volume 127, 30 October 2012, Pages 212-220
2楼2013-08-11 10:32:14
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