Preparation method of nitrogen-doped graphene

Preparation method of nitrogen-doped graphene

CN
  • CN 102,760,866 A
  • Filed: 04/26/2011
  • Published: 10/31/2012
  • Est. Priority Date: 04/26/2011
  • Status: Active Application
First Claim
Patent Images

1. the preparation method of a nitrogen-doped graphene is characterized in that, comprises the steps:

  • Step 1;

    graphite raw material is carried out oxidation processes prepare graphite oxide;

    Step 2;

    said graphite oxide is dissolved in ultrasonic dispersion prepares the graphene oxide solution that concentration is 0.1~

    2mg/mL in the solvent;

    Step 3;

    the adding mass concentration is 20~

    50% urea liquid in said graphene oxide solution, mixes, and obtains the mixed solution of graphene oxide and urea, and wherein, the volume ratio of graphene oxide solution and urea liquid is 8~

    12;

    1;

    Step 4;

    the mixed solution of said graphene oxide and urea is carried out hydro-thermal reaction under 80~

    200 ℃

    , promptly obtain said nitrogen-doped graphene.

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