In a gas sensing process using Ag doped SnO2 nanoparticles on silicon substrate, in what form silver is present on the surface before adsorption and during adsorption of a target species. Can we find silver ions on the surface.
DR MAKUT:photocatalytic properties of Ag doped SnO2 nanoparticles. Pure, Ag doped ... compared to pure one were detected. ... ion batteries, optoelectronic devices, solar cells, gas sensors ... electric and dielectric properties of SnO2 can support the use ... chloride through testing the remaining liquid using silver
https://link.springer.com/article/10.1007%2Fs10854-019-02052-y
Regards--
Hi Mukut
Depends on how big the particles are and how accurate do you want to be. When you say nano I am going to assume anywhere between 100-300 nm. In that case, if you just want to 'see' if your particles have Ag ions on the surface, then a quick elemental mapping with any X-ray technique (XRF, XPS, EDX) should suffice. The choice among each of these would depend on what other information is desired eg. valence/oxidation state or an elemental map.
If we are talking about particles below 50 nm with an accurate 'mapping' requirement, then EELS is one of the only few options available.
I hope this helps.
Mukut Senapati
Redox gas sensing can be applied using plasmon absorption or SERS using nanoparticles. Silver ions can be on the surface, but they do not affect the sounding of the starting materials and reaction products.
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