Synthesis of Nitrogen Doped Quantum Dots

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

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I show you how to make graphene quantum dots. They are yellow in solution and fluoresce when exposed to UV light. The smallest dots 1nm are violet, and moving through the color rainbow they get larger. What I have synthesized is 2nm blue dots.

Making them useful as a fuel cell catalyst.

I want to try them in everything especially ultra thin ultracapacitors.

As easy as hydrothermal reaction of milk at 180 C for 4 hours. Original paper here I have done nothing new with these as of yet but noone has applied them to oxidation reduction reaction in fuel cells or supercapacitors so it will be interesting to see the results.

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  • 1 × 96% Sulfuric Acid obtained at hardware store for clearing hair from drains
  • 1 × Potassium Permanganate bought off ebay
  • 1 × Alkaline Metal Nitrate NaNo3 preferable for cost
  • 1 × Stir Plate will be doing specific build for this
  • 1 × Whatman #1 filter Paper

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  • Quantum Dots From Milk

    MECHANICUS07/18/2016 at 23:00 0 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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