I have synthesized nanoparticles of 2D materials. I want to know if it is possible to know their sizes from UV-vis/ any other spectroscopy as well apart from TEM, SEM.
If they are spherical, and there's not much size distribution, then in principle, you can do it using the emperical fit found in this paper:
Determination of Size and Concentration of Gold Nanoparticles from Extinction Spectra
10.1007/s00216-007-1768-z.
For non-spherical particles, here's an answer I provided a while back that might help you out:
https://www.researchgate.net/post/Can_you_calculate_the_concentration_of_gold_nanorods_using_only_information_about_its_UV-Vis_spectrum
In any case, most likely you can, but the TEM/SEM/AFM methods are better and more reliable.
There are already 3 questions (and answers) in this same topic in the recent months here at ResearchGate: did you read those?! you can easily google for the entries
@ last 2 replies
The questioner asks for size evaluation from UV-sptroscopy
Dear all, thanks for the suggestions...
But if any one know how to find particle size through UV-Vis spectra please suggest me, (though it may not be good approach) I want to know what is the error I would get from different methods and compare it with TEM measurements.
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