Dear researchers,
Hi,
We synthesized alumina nanoparticles using algae extract. the produced nanoparticles calcinated at 1200 C inorder to obtain stable alpha Al2O3 nanoparticles. suprisingly the SEM and TEM images reveal good quality of dispersion and slight agglomeration!
generally, nanoparticle agglomerate at higher temperature. anyone can explain why we found littel growth of particles? is it related to organic moieties present in algae extract?
Thank you for your sharing your comments.
F. Buazar
You can't unless you keep your nanoparticles in stabilized wet form. Drying is and calcination cause irreversible aggregation. You have a collection of fused sub- and post-micron aggregates and agglomerates. There are no individual, discrete, separate particles < 100 nm in a powder. What is the specific surface area of the material you produced?
See this webinar::
Dispersion and nanotechnology
https://www.brainshark.com/malvern/vu?pi=zHSznNgprz5chz0
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