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Nanoparticle Alloys (Gold-Silver) not forming

I have synthesised what I thought were gold-silver alloys at various different compositions. The UV/vis data showed that nanoparticles alloys with a majority of the composition made from gold had one ...
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Characterisation of gold-silver alloy nanoparticle

I have various compositions of gold-silver alloy nanoparticles. I would like to characterize my nanoparticles and confirm that they are alloys. Aside from the qualitative analysis of the colour and ...