https://www.materials-talks.com/blog/2014/02/06/characterization-is-a-number-42-not-a-goal/
What are your critical quality attributes (CQA's) and your product performance indicators (PPI's)?
There are many earlier references published in 2000s, which you could find really helpful for your question. Here i summarise the essential tools or techniques to charaterise silver nanoparticles (AgNWs) as follow.
1. UV-Vis spectrophotometer: the absorption of AgNPs can identify the particle size, reaction medium or chemical surroundings. The absorption peak-assigned to a surface plasmon resonance (SPR) absorption band, is well documented for various particle size ranging from 2 to 100 nm. The stability of AgNWs solution can also be tested with this equipment.
2. X-ray Diffraction (XRD): it is 0mainly used for the analysis of molecular and crystal structures, quantitative resolution of chemical species. It can identify the AgNWs crystal structures. At meantime, it can also determine whethe AgNWs are pure or not.
3. SEM : it can resolve different particle sizes, size distributions, particle shapes and surface morphology. The combination of SEM with energy-dispersive X-ray spectroscopy (EDX) equipment is very often available in a university, which can examine both silver powder properties and chemical composition analysis.
The above techniques are essential to charaterise AgNWs. Other techniques such as FTIR, TEM, XPS and etc.could also be used to give you more insights into AgNWs properties. Hope it helps.
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B R Siddharth I have written a book chapter (edited by NIST folks) called 'Characterization of nanomaterials'. See:
Chapter Characterization of Nanomaterials
Perhaps this will be useful for you. perhaps it won't. You need to know what you're needing the numbers for. What would be the difference in properties between 42 units measured and 43?
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