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lkzmaster木虫 (著名写手)
教授
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[交流]
【求助】XPS 高手请忙帮
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我的论文审稿意见中有这么一条In the Experimental Section, procedure for preparation of samples for XPS studies is to be described in more details. It seems that authors supported powders on double -sided scotch, which precludes any pretreatment of samples before spectra recording. In this case, the surface of samples is known to be hydroxylated, covered by carbonates and adsorbed CHx species trapped from air. Carbonates are also well known to be trapped in the bulk of high-surface-area ceria samples. Organic species trapped from air could reduce the surface even at room temperature especially during sample evacuation before measurements or under effect of the electron flood gun. All this makes difficult (if possible at all) reliable interpretation of XPS spectra in both O1s and Ce 3d ranges. Moreover, for sample studied after redox cycles, its inevitable transfer from reactor into the spectrometer through the air also affects its surface state even if it was reoxidized in the reactor before discharging (not mentioned, by the way). Hence, XPS data interpretation is certainly to be supported by experiments with sample supported on a metal holder which allows pretreatment in controlled conditions providing reproducible state of the surface. If it is not possible for authors, I would advise just to remove this part of research from the article. 好像是说样品没有预处理，我是送样做的，对XPS的预处理知道的不多，看了半天还是不太明白这个审稿意见的意思，请XPS有经验的朋友帮忙看看。谢谢了！ |
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Henderson reported a high-resolution electron energy loss spectroscopy (HREELS)-temperature-programmed desorption (TPD) study that oncluded that the adsorption of water on rutile (110) is molecular on the stoichiometric surface and dissociative on the reduced surface, which is conventionally produced by heat treatment, presumably forming oxygen defects. 请问 the reduce surface 是什么含义？ |
8楼2011-09-28 20:11:55