I have prepared Ni nanoparticles and Co nanoparticles by chemical reduction method now i want to measure the size of nanoparticles. What are the techniques to measure their size? which one is easier?
Thank You.
For the hydrodynamic size use a zetasizer, for size without interactions use sem or tem
The techniques generally used for measuring size are Dynamic light scattering, TEM, SEM and XRD.
If they are not mixed, so the easiest way is using DLS, Dynamic ligth scattering method. If their dynamic size is ok for you, then you can use SEM or TEM or XRD to define it accurately. But in order to use the DLS method, you have to prepare a stable suspansion concentration of which is in accordance with the standard.
Thank you so much. @Shima Kashani, @Anupma Thakur and @Omar Gonzalez-Ortega
All what has said above is right. The best methods for determining sizes of nanoparticles are microscopy tools SEM or TEM or AFM.For more details, please have a look at attached file.
@Hassan Alshamsi, So nice of your sir, Thank you for sharing information,
Thanks & Regards
@Syed Asad A Zaidi, There are actually many ways (already mentioned above) to measure your nanoparticle size. Depending on your situation you can adopt any one from those. Let me tell you that if you choose Electron microscope, you will get to know not only your NPs' size but also crystal information, and elemental composition. But you need to be very careful and be patient with sample preparation and it is of course time to consume. wise to choose "TEM GRID"
And if you consider seeing the size only, I would suggest you to go for DLS, it is much convenient and does not need any complicated set of sample preparation.
You need to take the sample concentration in an account in order to get reliable data from DLS. Proceed as follows if your particle size is 1 um use concentration of 0.1g/l. Be aware that particle interactions may occur at sample concentrations larger than 1% by volume - particle interactions will influence the results.
Good luck!
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