Nitrogen-doped carbon nanosheet, preparation method and application thereof
A technology of nitrogen-doped carbon and nanosheets, applied in nano-carbon, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of low nitrogen doping amount and high cost, and achieve high nitrogen doping content , reduce the preparation cost, and have excellent structural properties
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[0036] The invention provides a method for preparing nitrogen-doped carbon nanosheets, comprising the following steps:
[0037] Mix and disperse petroleum-based materials rich in aromatic components and nitrogen-containing small molecules in toluene solution, distill the toluene completely at 60-90°C, and grind to obtain a uniformly mixed precursor;
[0038] The homogeneously mixed precursor was subjected to a high-temperature carbonization under a nitrogen atmosphere to obtain a two-dimensional g-C 3 N 4 Carbon materials for template intercalation;
[0039] For the above two-dimensional g-C 3 N 4 The carbon material intercalated by the template is fully ground, and a second high-temperature heat treatment is performed in a nitrogen atmosphere to remove the template to obtain nitrogen-doped carbon nanosheets.
[0040] The preparation method uses petroleum-based materials rich in aromatic components as raw materials to reduce the preparation cost, and the synthesized carbon...
Embodiment 1
[0052] FCC oil slurry rich in aromatic components and melamine were mixed and dispersed in the toluene solution at a ratio of 1:4, the toluene was completely distilled off at 90°C, and a uniformly mixed precursor was obtained after grinding;
[0053] The homogeneously mixed precursor was subjected to a high-temperature carbonization under a nitrogen atmosphere at a heating rate of 1.0°C / min, a carbonization temperature of 550°C, and a carbonization time of 3 hours to obtain a two-dimensional g-C 3 N 4 Carbon materials for template intercalation;
[0054] For the above two-dimensional g-C 3 N 4 The carbon material intercalated by the template is fully ground, and a second high-temperature heat treatment is performed at a nitrogen atmosphere with a heating rate of 5°C / min and a carbonization temperature of 800°C to remove the template and obtain nitrogen-doped carbon nanosheets.
Embodiment 2
[0056] The preparation method of nitrogen-doped carbon nanosheets is the same as in Example 1, except that the carbon source is pitch.
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