After centrifugation, particles settled down and also along the centrifuge tube wall.
Kindly suggest the best way of separating and drying to obtain silver nano powder.
It is always better to use the colloidal form of AgNPs. But still if you want to use the dry powder, you can lypholize the pellet and can use further.
check this paper" Potential theranostics application of biosynthesized silver nanoparticles."
It is always better to use the colloidal form of AgNPs. But still if you want to use the dry powder, you can lypholize the pellet and can use further.
check this paper" Potential theranostics application of biosynthesized silver nanoparticles."
I concentrate with centrifuge, but if you centrifuge more than 2, nanosilver lose their quality.
Thank you to all of you
for evaluation of antibacterial activity I can use colloidal solution.
So now question is that for catalytic reaction e.g degradation of dyes, In batch experiment use the colloidal solution of silver nano particles..such as 1ml, 2ml ???
Sudip Mukherjee....another question can we characterize the colloidal solution such as FTIR TEM etc
for characterization purpose is there need of powder silve NP
Yes for TEM and FT-IR you require solid state samples - for FTIR you can disperse your colloid in KBr and make it as pellet and measure , for TEM do the same thing [ preferably sonicate and dilute the sample as much as possible and measure [ probably u can dry it using even hair dryer after dispersing the sample in TEM grid ] ............hope this helps
Dear sadia, you can glass coat the pellet and do Ftir, for Tem dilute the pellet and do. For catalytic expt you can check with colloidal Ag. Check some good reference before starting your work. Best wishes.
wash and dry your product in the oven for several times and then use an ultra sonic bath.
Hopefully it works.
After centrifugation washed you nanoparticles with ethanol. Then your nanoparticles will dry soon with no aggregates
Thanks after final solution containing silver nanos how can i dry the solution and under which temperature.
Centrifuge the solution and then disperse them in ethanol and centrifuge again
Sadia Saif
Hi dear sadia
You can wash your powder after centrifuging process by ethanol and using high power ultrasonic bath.
i synthesized silver nanoparticles from plants extracts did uv and TEM size and morpholohy is good now looking for powdered uv and xrd can any one guide me please
Dear Riaz,
In my opinion you can try lyophilizer (freeze drying) to convert your liquid sample to solid/semi solid material (depending on your sample) for XRD analysis.
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