Thanks. You had to tell the software the number of peaks. So I suppose that you need first to know all the element forms. For example, if a sample has different nitrogen functional groups but you don't know which ones exactly, this wouldn't work because you can't really tell how many peaks it really should have.
Hi Chenhao, it is tough to do in the C 1s spectrum as there is not a lot of separtation between the C-C, C-N and C-O peaks. I usually infer the amount of C-N in the C 1s spectrum by using information from the N 1s spectrum and the amount of N from the survey spectrum. For example, if I know I only have amine functionality from the N 1s and I know the at. % amount of N present - I can calculate the amount of C-N in the C 1s spectrum and fix the C C-N peak to that amount.
@@markbiesinger Thank you, very nice video. Do you mean in appendix 1 in Briggs & Beamson's book? I found different shifts in this old paper "Physica Scripta. Vol. 2, 70-80, 1970" and tried to understand more here "Progress in Materials Science 107 (2020) 100591". Where do you suggest to study more of this topic? Thanks again.
thanks! why you put 1.2 to the fwhm. I use to put less than 2. there is some publication where you found that??
sir, how you create only three curves? if we keep on creating components we get curves....
Thanks. You had to tell the software the number of peaks. So I suppose that you need first to know all the element forms. For example, if a sample has different nitrogen functional groups but you don't know which ones exactly, this wouldn't work because you can't really tell how many peaks it really should have.
Hi Mark, is XPS able to differentiate C-O-C and C-N content in C 1s?
Hi Chenhao, it is tough to do in the C 1s spectrum as there is not a lot of separtation between the C-C, C-N and C-O peaks. I usually infer the amount of C-N in the C 1s spectrum by using information from the N 1s spectrum and the amount of N from the survey spectrum. For example, if I know I only have amine functionality from the N 1s and I know the at. % amount of N present - I can calculate the amount of C-N in the C 1s spectrum and fix the C C-N peak to that amount.
@@markbiesinger I got it! Thanks very much for your help!
Thanks ❤
how you know the position of each peak? Is there any standard values?
Yes there are databases for binding energy positions, examples at: www.xpsfitting.com/2008/10/polymer-databases.html
@@markbiesinger Thank you, very nice video. Do you mean in appendix 1 in Briggs & Beamson's book? I found different shifts in this old paper "Physica Scripta. Vol. 2, 70-80, 1970" and tried to understand more here "Progress in Materials Science 107 (2020) 100591". Where do you suggest to study more of this topic?
Thanks again.
thanks
it is not visible.