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杨光520

金虫 (小有名气)

[求助] 拉曼光谱 具体的出峰位置 表征 急急急急急

想通过拉曼来表征Cd-S键的断裂以及O-Cd键的形成,不知道具体的出峰位置。。。以及Cd-Te键的峰的位置
想测原位的,本来是想测液体的。但是样品寄到别处去了,那人给我滴在硅片上然后测得,是不是最好要重新测得啊?
测液态样的话,要注意什么啊?参数什么的怎么测啊???
求各位大神们的指点!!!!
最好是能给我具体的文献,或者是告诉我怎么查的,在哪查到的^
因文章需要,急需这批数据。大神们帮帮忙啊!!!!!
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杨光520

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引用回帖:
2楼: Originally posted by WONDERFUL. at 2012-08-19 03:34:30
the sharp peaks at about 500 and 1000 seem to be characteristic peaks of Si, and the one around 300 seems to be indicative of Cd-S. But in your case, in the second spectrum, peak at around 300 is sti ...

那请问你知不知道O-Cd键以及Cd-Te键的峰大概会在什么的位置啊?
你有测过液态样的拉曼吗?要注意些什么啊?
3楼2012-08-19 17:59:02
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WONDERFUL.

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杨光520: 金币+5, 有帮助, 有帮助的 2012-08-19 17:44:24
the sharp peaks at about 500 and 1000 seem to be characteristic peaks of Si, and the one around 300 seems to be indicative of Cd-S. But in your case, in the second spectrum, peak at around 300 is still there. So it doesn't seem to be a process of breaking Cd-S bond and forming Cd-O bond. So I don't necessarily know what's going on there. the broad feature in your first spectrum could be resulted from some background (which can be baseline corrected I guess). The emerging of peaks at around 3000 I don't really know why.
嗯,哦,呃,啊,唔,咳
2楼2012-08-19 03:34:30
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WONDERFUL.

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杨光520: 金币+20, ★★★★★最佳答案, 感激不尽!!!! 2012-08-22 10:40:44
xbqewpq: 金币+1, 英语大牛啊 2012-08-22 10:41:02
the most prominent Cd-Te peak (LO peak) is about 165~170cm-1
ref:
http://www.nanoscalereslett.com/content/pdf/1556-276X-6-79.pdf
http://www.sciencedirect.com/sci ... i/S1386142505005251
http://www.springerlink.com/content/j713132m31778563/
http://www.rsc.org/suppdata/JM/b7/b717966a/b717966a.pdf

Cd-O peaks: sharp peak at ~265cm-1(tentatively assigned to the second order transverse acoustic phonon mode, or 2TA mode), broad feature at ~390cm-1 (300~400cm-1 broad peak, two-PDOS)
ref:
http://jap.aip.org/resource/1/japiau/v107/i6/p063519_s1
(sorry for keeping you waiting...)

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嗯,哦,呃,啊,唔,咳
4楼2012-08-22 10:05:04
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WONDERFUL.

银虫 (初入文坛)

The answer above is just a personal assessment based on published results. Whether they're right or wrong, you should make up the decision. Just a disclaimer.
I haven't done any Raman measurement on liquid sample. So not very sure what to be careful about.
嗯,哦,呃,啊,唔,咳
5楼2012-08-22 10:09:02
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