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Revision as of 21:03, 16 October 2016
NANOPARTICLE SYNTHESIS RESULTS:
Plant Synthesis: Aloe Vera
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Plant Synthesis: Garlic
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Plant Synthesis: Cabbage
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Chemical Synthesis: Martin Method
The Martin method of synthesis was used to create gold nanoparticles ranging in size from 1-10nm. The colour change from clear to dark red indicates the formation of our nanoparticles.
Individual nanoparticles cannot be observed through a typical light microscope because of their small size. Once synthesis of our nanoparticles was complete, we brought samples to a Transmission Electron Microscope (TEM) to observe our nanoparticles. Above is one of the images from the TEM. The nanoparticles were all spherical in size and fell into our expected range of 1 - 10nm. Most of the nanoparticles were around 5 nm in size, which is optimal for our nanoshell attachment method.
One method for confirming the presence of our nanoparticles involved measuring the absorbance of our samples using uv-vis spectroscopy. Gold nanoparticle synthesis appears to be successful from this UV-vis data. We were expecting a peak at 513±3nm and obtained a peak at 511 nm.
One method for determining the size of nanoparticles involves the use of dynamic light scattering (DLS). This method measures the size of nanoparticles based on the water molecules surrounding the nanoparticles. This hydrodynamic size confirms the diamter of our nanoparticles. Accordind to our DLS data, most of the nanoparticles synthesized through the Martin Method were 3nm or 5nm. This falls into our expected range of 1-10nm.
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Chemical Synthesis: Turkevich Method
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