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hsnaibad

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[求助] 新手求助XPS分析

做了个Mn的XPS,如图所示,在642左右存在两个峰,是否说明同时存在Mn4+和Mn3+?那么这两种价态Mn的含量比例怎么计算?

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zyhou

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【答案】应助回帖

感谢参与,应助指数 +1
第一、图谱要用污染碳的结合能来校正!
第二、是否是这两种价态的锰需要参考文献!不一定是两种价态,可能是电子自旋方向不同,比如:文章中说:
peaks at 641.9 and 653.6 eV, corresponding to Mn2p3/2 andMn2p1/2 spin orbit peaks of a-MnO2
和你的比较象!
见文献:J. Mater. Chem., 2012, 22, 18115-18118
2楼2012-09-15 11:38:59
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