User:Puja Mody/Notebook/Chem 571: Gold Nanoparticles/2012/11/28: Difference between revisions
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*The Au/ADA solutions had not shown fibers at mole ratio 25 but did show fibers at mole ratio 50. in order to better pinpoint a mole ratio that gave gold nanoparticles in solution, we remade Au/ADA solutions at mole ratios 10-45 (going up by intervals of 5 making a total of 8 solutions), using the same gold stock and the same ADA (Frac #8). | *The Au/ADA solutions had not shown fibers at mole ratio 25 but did show fibers at mole ratio 50. in order to better pinpoint a mole ratio that gave gold nanoparticles in solution, we remade Au/ADA solutions at mole ratios 10-45 (going up by intervals of 5 making a total of 8 solutions), using the same gold stock and the same ADA (Frac #8). | ||
* These samples were then capped with aluminum foil and placed in an oven for 4 hours at 80°C. | * These samples were then capped with aluminum foil and placed in an oven for 4 hours at 80°C. | ||
==DATA== | |||
[[Image:Postdialysis.jpg]] | |||
==Conclusions== | ==Conclusions== | ||
* In the Au/ADA spectra, no peaks were seen in the λ500nm range, instead, a slight peak was seen around λ250-325. What this peak represents, we are not sure. | * In the Au/ADA spectra, no peaks were seen in the λ500nm range, instead, a slight peak was seen around λ250-325. What this peak represents, we are not sure. | ||
* For the newly made Au/ADA solutions at mole ratios 10-45, some of the samples produces a slight purple tinge prior to its placement in the oven. As a result, a UV-Vis spectrum of these samples ( mole ratios 10, 15, 40, 45) was taken. For full details on the makings of these samples, please see Michaels Notebook | * For the newly made Au/ADA solutions at mole ratios 10-45, some of the samples produces a slight purple tinge prior to its placement in the oven. As a result, a UV-Vis spectrum of these samples ( mole ratios 10, 15, 40, 45) was taken. For full details on the makings of these samples and the data collected, please see [[User:Michael F. Nagle/Notebook/Chem 571/2012/11/29| Michaels Notebook]]. His results showed that in the 25-33 mole ratio range, purple solutions were present without fibers. Further zeroing in on this range needs to be done in the fugure in order to more specifically determine the mole ratio of Au to ADA that leads to the formation of nanoparticles in solution. | ||
* | * | ||
Revision as of 10:56, 7 December 2012
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