Dear, in chemical of analytical each bond select by optimum value you can see the FTIR spectrum analysis hand book. 

The file can not be downloaded

Dear, I think this is OK.

Looks good for GO. You can find plenty of FTIR spectrum for GO on the web and compare them with yours to confirm the functional groups.

It is odd that you have so intense bands at 2860, 2926 cm-1... compare with the attached Figure and paper. Also your transmittance is very low, why?

Article Graphene oxide powders with different oxidation degree, prep...

Dr F. Caballero-Briones 

thanks

but I think the intense bands at 2860 ,2926 cm-1 due to the method of synthesis

I used microwave and polymer for synthesis 

what is your comment about this ?

and  I want to known the presence of  2860 ,2926 bands consider error ?

please i want to known your opinion

thanks 

Low transmittance could merely be due to low thickness of the sample, feel free to correct me if I am wrong...

it is at the inverse, low transmittance, maybe lots of sample.. Altough GO is not usually very absorbent.. Bands above 2500 could arise from the polymer you mention? Which polymer is that?

Dr Aisha Tanvir 

yes the sample has low thickness

thanks

Dr F. Caballero-Briones 

I need to known what is the problem in this spectrum you expect and it is OK or NO please ?

I used polyethylene as polymer.

thanks

Ok, your ftir shows what can be considered bands related with GO but also polyethylene has C=C, thus I guess you have some kind of composite .. Aisha, sample is thin but absorbs a lot, that is caused by PE, GO usually does not absorb that much...Mahmoud, I am not sure if your spectra is ok or not, I tell you what is seen but I dont know what were you expecting.

 Dr F. Caballero-Briones

are you think this spectrum represents the spectrum of polyethylene ?

and what is your opinion about this picture published in some paper?

thanks

Graphite oxide spectrum looks familiar to me bands related with carboxyl and C=C bonds.... graphene spectrum has strong bands related with OH around 3500 that are not explainable in graphene (where OH would come from?) as well as strong  CH bands that I am not sure they have to be present in that extent in a graphene sample... in our work we havent noticed these bands in reduced graphene oxide...but,  it would be useful to know what are people reporting and how are you fabricating your graphene oxide...