I have prepared CeO2 based nano-particles. due to some technical issues some of the properties like electronic structure and magnetic properties are pending. the samples were prepared approximately 6-7 months before. Since nanoparticles have a tendency to agglomerate then for further characterization, may I have to anneal them again?
Hi Mridula, use XRD before annealing to check if your sample has been polluted (annealing can influence the particle size). If your CeO2 nanos are not stabilized they will agglomerate without a doubt. It will also depend on your application, if you are planning to use them in some water-related treatment I recommend to employ the zeta potential technique for controlling colloidal stability, point of zero charge, flocculation, and suspension rate. My best.
At first, heat the samples to remove the moisture content then sonicate the samples.
thank you, sir. Actually, the sample is prepared before a year. it found in the literature that it gets agglomerate. they are nanoparticles. now I want to study electronic structure. I have doubt may I have to annealed or grind again after a year.
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