If not what is the standard amount one should start with PVP, e.g. for 1 gm AgNo3, to prevent having excess of PVP?
The fastest way, if there is possibility to use is using the infrared spectrometer or near-infrared spectrometer, at-line or in-line.
yes, the easiest way is doing FTIR. you can do before and after treatment to see the amount of PVP left. The other method is XPS, which is complimentary. please see my publication for " Decomposition of poly(amidoamine) (PAMAM) dendrimers under O 2 plasma conditions"
In case of AgNO3, You require very small amount of PVP. PVP to metal ratio generally lies in between 25 to 700. and excess PVP you can remove by centrifugation.
Dear Abhitosh Kedia, may I know what centrifugation speed do you use to separate the PVP from the metal nanoparticles?
for silver start with low RPM (2000) and for less time as it is oxidised easily. Rest depend upon your particle size also
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