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Quantum Dots From Milk

A project log for Synthesis of Nitrogen Doped Quantum Dots

Nitrogen doped carbons are an important catalyst for many reactions and energy storage.

mechanicusMECHANICUS 07/18/2016 at 23:000 Comments

Just finished synthesizing quantum dots from milk by hydrothermal reaction at 180 degrees Celsius. You can see the blue color of the liquid this is indicitive of 2nm wide nanoparticles of nitrogen doped carbon quantum dots.

This should finally move my supercapacitor project and every other project I need nitrogen doped carbons for.

I used a cheap 50mL hydrothermal reactor I got off ebay the rest of what comes out of the reactor is a brown resistive monolith. The reactor was filled to 80% full with whole milk then baked in the oven for 4 hours at 180 degrees Celsius I have reason to believe this is mainly QD as well as it can be dispersed in water with sonication and exhibits the blue glow when exposed to ultraviolet.

Conductivity is low but that is to be expected with such small particles. I will be combining these with graphene for many applications. 1294 ohms over about a cm, this should drastically go up upon full drying.


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