becoz i got the EDS results having only 16% copper nanoparticles and 76% carbon
Did you tried centrifugal separation? Sonication and clarification may also be helpful depending on the size of the extract.
Brother Humayun,
1] I strongly hope that you have merely loaded your particles on a carbon tape based Al stub and the EDS you are talking about, I guess it is from an SEM attachment....
The operator might have focused the region where your particle is less and the Carbon background more.... It is obvious that C peak always appear in EDS (if you do with the C-tape based attachment)
2]Other scenario: Inorder to wash, make sure the solvent you are selecting does not precipitate your partciles and settle them out, leaving only organic molecules to float and reftects on your EDS...select appropriately!
As Mr Mahmoud suggested you can try physical techniques (filtration/sonication/centrifugation) to eradicate more amount of organic byproducts and have your EDS only with your Cu in max %...
Hope that helps...!
Hi Humayun, in addition to Ahamed answer, I really don't get it what you are meant by pure nanoparticles. Anyway, by guessing I think you want to make copper oxides in carbon nanotubes (Cu in CNT's, allotropes of carbon) and how well it is distributed on CNT?. If it is, I suggest you to run also TEM analysis in order to decide whether re-prepare that material by changing method of preparation (as mentioned by Mohamed ) or by extraction. As known, EDS analysis is a complement tool in SEM ( the area of analysis is not representative to all material you have synthesized. I hope this explanation aid you.
Hi Humayun, the question what u asked is correct
i also facing same problem, i little elaborate it when we do synthesis of NP with plant extract, synthesis of NP ocuures and it is coated with thin film of plant molecules hence it is difficult to get only Nanoparticles in pure form. Very few almost no one discuss in detail about this and how to remove this thin film over the Nanoparticles synthesized. some are saying give a washing with ethanaol or acetone but really it helps to remove the film formed over Nano particles? they might be right as solvent dissolve many bio molecules
if anyone have the answer or document paper for this please share to me also
Please note, that film on nanoparticles likely act as stabilizer preventing agglomeration. If you remove it you have to replace it by another stabilizer.
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