User:Sarah Burkhard/Notebook/471 Nano Notebook/2016/10/04
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UV Vis Silver Round 1pH 4 - 12, Fructose 0 mM, 0.0625 mM Solutions
we discarded pH 4 - 6 solutions and only measured absorbance for pH 7 - 12. Observations: all except pH 12 show precipitates. only pH 12 is a homogeneous, slightly orange solution.
Fructose = 0.0 mM
Fructose = 0.0625 mM
we prepared pH 4 - 6 again, with HNO3
We finished the UV Vis on Wednesday. Results
The above chart shows the UV-Vis spectra for [Fructose]=0 mM, [Ag]=0.25 mM. Nanoparticles were only formed for pH 4, 11, and 12. All other pH solutions formed a cream colored precipitate, and did not appear to form nanoparticles from the spectra.
The above chart shows the UV-Vis spectra for [Fructose]=0.0625 mM, [Ag]=0.25 mM. As with 0 mM fructose, nanoparticles were only formed for pH 4, 11, and 12. All other pH solutions formed a cream colored precipitate, and did not appear to form nanoparticles from the spectra.
The absorbance at 530 nm is shown above for [Fructose]=0 mM, [Ag]=0.25 mM. As expected, solutions that did not form nanoparticles have an absorbance of ~0.
The absorbance at 530 nm is shown above for [Fructose]=0.0625 mM, [Ag]=0.25 mM. As expected, solutions that did not form nanoparticles have an absorbance of ~0.
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