After washing and purifying the nanoparticles, does the reaction continue if I keep them? How long can it be preserved if it is delayed by measuring devices? Is there a procedure for the washing or purification process?
https://www.researchgate.net/post/How-do-I-remove-impurities-in-nanoparticles
Husham N Noori, hi may be this suggestion will help you...
After synthesis of nanoparticles you need to rinse the nanoparticles with deionized water several times (3-4 times) which will halt further growth of nanostructures. and for preserving them firstly you have dry it properly then you can use air tight vessels which you have to keep inside the desiccator. you can preserve the nanoparticles in this manner for prolonged duration.
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Ravi SHANKAR Rai Thanks a lot for the explanation. What is the maximum period for preserving samples from damage? Will the desiccator help me extend its life and keep it from accumulating? Do you have a mechanism or sequential steps for the washing process? How do I know that the washing process is sufficient and does not need to repeat the steps? Did you use anything other than ionic water?
@Husham N Noori If you are keeping your samples properly in airtight vessel inside a dessicator also you have to be very careful about moisture. I kept bani particles for more than 4 to 5 months and again I verified the properties it was unchanged. Acetone, ethanol and DI water is sufficient for washing nanoparticles.
Ravi SHANKAR Rai After the purification and washing process, does the non-ionic water affect the nano-material that was stored in it? Meaning, if I keep the sample in a liquid form after purification, how long can I keep it?
Ravi SHANKAR Rai Did you use the vacuum device with the desiccator? And when did you disconnect the device from the desiccator? What is the indication that the desiccator has been completely expelled from the air?
Ravi SHANKAR Rai If I added the samples inside the desiccator at separate intervals, will the samples be affected when opening the desiccator each time?
Husham N Noori yes i had use vacuum device with desiccator. you have desiccate till pressure reaches 600 mm of hg then you can disconnect.
Husham N Noori be careful while opening the desiccator each time it may damage your sample if you completely open the desiccator several times also you have to main the pressure each time.
if you remove the liquid phase (store them as powder) the nanoparticles will start to form almost irreversible aggregates. What happens in the liquid phase depends on the nature of the nanoparticles, e.g. SiO2 may slowly dissolve leading to slightly smaller particles over years.
It is better after a good washing and cleaning process. The material is kept away from moisture and kept well. We have experienced it well, about a month or a little more, and the measurements will not be affected during this period.
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