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lmy1324

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[求助] 急求大神指导,审稿意见关于XPS是啥意思 已有1人参与

Also, it is difficult to believe less than monolayer of Pt atoms show both metallic Pt(0) and Pt(2+) states in XPS spectra of Pt-Pd/C catalyst. It may have only one of the states. If Pt(2+) does exist, O 1s spectra must have its corresponding component peak at ~532.2 eV, so has to be included. When we calibrate XPS data with adventitious carbon, usually 284.8 or 250.0 eV is applied. What they used is 284.6 eV, which is a little bit lower than them, but made their Pt peak positions (71.25 and 72.86 eV) closer to 71.1 and 72.7 eV values for Pt metal and Pt(OH)2. It may be ok, but the spin-orbit splitting value has to be maintained during the deconvolution process. The value for Pt 4f7/2 -4f5/2 is 3.33 eV, but none of them matched.
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yx19920522

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lmy1324: 金币+15, ★★★很有帮助 2017-07-26 17:37:24
XPS测试时一般会根据C 1s来校准测试误差,然后再去分析其他的峰。其次,你的Pt的分峰解释审稿人已经指出问题了,Pt2+存在时,O 1s也要有相应的分峰。。而且对于Pt的峰分析中,有一个严重的问题,不同能级轨道间的差值是固定的,你对应pt分峰的自悬浮轨道差值肯定是与其他文献不匹配的,至少与审稿人认知得不一样。所以你XPS分峰的时候处理应该是有问题的。或者说你的解释有问题,建议多看一些好的文献,找到好的论据,去修改或者去说服审稿人,祝好
2楼2017-07-26 17:09:10
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