Your spectra is Okay. Showing the successful formation of AgNPs
The peak that is shown in the UV-Vis spectra at ~420 nm indicates the formation of silver nanoparticles. You can further study the characteristic features using other analytical techniques.
The peak what you have got indicates the synthesis of silver nanoparticles..U can further purify this nanoparticles and characterize them using EDX, XRD and TEM
your Ag nanoparticles synthesized. Ag nano peck is about 390-460 nm
You have successfully synthesized the silver nanoparticles. The peak at 430 nm confirms the synthesis of AGNP's
How to synthesize silver nanoparticles using Allium cepa as the reducing agent?
We try synthesizing and the resulting color is pale yellow
S. Natarajan not from 400-600 nm. It ll around 400-450 nm.
Cu and Au both show between 500-600 nm.
Ag nanoprticles possess strong absorption in the range of 400 - 450 nm , due to the surface plasmon resonance (SPR) phenomenon.
I think UV-Visible peak range 435 - 440. It is confirmed your UV range synthesized AgNPs.
Moreover, you have strong absorption in the UV region 600 nm, it could mean that your samples show some interesting morphology (different than spherical one).
Dear Dr.
The UV visible spectra showes that
100 percent the AgNPs was synthesized.
Dear Maryam, UV-Vis spectra is only a preliminary result to indicate whether nanoparticles are synthesized or not, but then you have to proceed to confirmatory tests like TEM, DLS, and EDX which confirms the presence of the element of interest. for silver nanoparticles, you can scan from 300 - 600 nm.
UV-Vis absorption peak around 435 nm indicates formation of AgNP with size around 80 nm. However, I think you should take the data with diluted sample as your sample's peak absorbance is around 2.
The UV-Vis results shows that you obtained AgNP. I suggest you, to purify better the nanoparticles and then perform other lecture, so that you get a better spectrum. Also you need to used other techniques as DLS, EDX or TEM to confirm the obtention of AgNP.
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