I got XRD peak of pure CNF paper at 10 degree and another one at 25 degree. I have references of 25 degree but not for 10 degree. can anyone suggest what could be the possible reason behind XRD peak at 10 degree of pure CNF?
Hi Surbhi,
Yes, it is interesting. As I have also made a comment on your previous post regarding doped CNF and thought that 10 degree peak maybe contributed due to the doping, but here for pure CNF you've still got a response at 10 degree.
In this regard, I am attaching an article you may find helpful. As per the article, it seems you have a different degrees of graphitization in your synthesized sample. The characteristic diffraction peak at 10 degree also corresponds to the (002) plane of hexagonal graphitewith an average d-spacing of around ~0.79 nm. You can calculate your d-value and verify accordingly.
As understood, it indicates that the interlayer spacing was extended maybe due to the intercalation of the oxygen-containing functional groups into the layers.
Hope this helps.
Hello. I hope the following website could help you :
http://www.fhi-berlin.mpg.de/acnew/department/pages/teaching/pages/teaching__wintersemester__2015_2016/frank_girgsdies__peak_profile_fitting_in_xrd__151106.pdf
Dear Aref Wazwaz ,
thanks for the instructive tutorial on peak profile analysis.
But you might give a hint to Surbhi Anand and all of us readers on which page of your link there is a relation to the question asked above.
I myself am very interested in the anwer, but at a first quick glance I havn't seen any relation to that specific question...
You may have mistakenly attached a wrong link.
Thanks in advance and best regards
G.M.
Dear Surbhi Anand ,
it is now the second time, that you you ask for the origin of the 10° peak in your XRD pattern.
In order to exclude any experimental issue you should perform an XRD scan taking only your substrate/sample support without any net sample material and look whether the 10° peak really arises from your material...
As already mentioned in the attachment given by Samit Karmakar a peak close to 10° is found for example for GO.
See also fig. 4 of:
Conference Paper Comparison on graphite, graphene oxide and reduced graphene ...
But I do not know from the chemistry point of view, whether it is possible in your case to have GO present in your sample...
See also CNF on GO in Fig. 2 of :
Article 3D assembly based on 2D structure of Cellulose Nanofibril/Gr...
So what is your substrate?
thanks to all. Gerhard Martens my substrate was glass. I took my sample on a glass slide substrate then did XRD. is this a reason for getting GO peaks?
Dear Surbhi Anand ,
thanks for feed back...
The XRD pattern of a glass substrate itself will not exhibit the 10° peak.
I am not specialist on cellulose and GO chemistry, but due to the quite inert behaviour of glass I do not expect a reaction of CNF and glass to give GO.
So I expect that GO must be present in the CNF paper sample due to its manufacturing process.
What are the steps from CNF material to CNF paper?
What is the expected thickness of the CNFs?
The lattice spacing, which can be assigned to the 10° peak, is about 8,8A.
That is about 5 atomic distances. I do not expect that your fibers can be so thin, because cellulose is a quite multi-atomic molecule .
thanks a lot sir Gerhard Martens . but how would I explain this into my research article where I got the same peak for pure CNF and doped CNF. actually, I am unable to explain my XRD result.
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