Nitrogen-doped carbon nano-material as well as preparation method and application thereof
A technology of carbon nanomaterials and nitrogen-doped carbon, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of poor cathode oxygen reduction performance, etc., and achieve suitable for large-scale production, improve efficiency, and low cost Effect
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[0034] The nitrogen-doped carbon nanomaterial, and its preparation method, such as figure 1 As shown, including the following steps:
[0035] (1) The surface-activated carbon nanomaterial and the nitrogen-containing complex are uniformly mixed according to a mass ratio of 1:1 to 1:5 to obtain a precursor mixture.
[0036] In order to make the precursor mixture more uniform, it can be mixed according to the following methods:
[0037] (A) Add the carbon nanomaterial and the nitrogen-containing complex to the deionized water at a mass ratio of 1:1 to 1:5 to obtain a suspension;
[0038] (B) Disperse the suspension obtained in step (a) ultrasonically for 10 minutes to 30 minutes to make the dispersion uniform.
[0039] (C) Evaporate water from the suspension obtained in step (b) at 50°C to 70°C, then vacuum dry and grind into powder at 40°C to 80°C to obtain the precursor mixture.
[0040] The surface activated carbon nano material is acid-treated carbon nano material or graphene oxide. Th...
Example Embodiment
[0049] Example 1
[0050] A kind of nitrogen-doped carbon nanomaterial, the electron micrograph is like figure 2 As shown, including nitrogen-containing heterocyclic compounds and carbon nanomaterials, the mass content of nitrogen is 2%. The nitrogen existing in the nitrogen-containing heterocyclic compound is pyridine nitrogen, pyrrole nitrogen and graphitized nitrogen. The carbon nano material is graphene oxide.
[0051] The nitrogen-doped carbon nanomaterial is prepared according to the following steps:
[0052] (1) The surface-activated carbon nanomaterial and the nitrogen-containing complex are uniformly mixed according to a mass ratio of 1:5 to obtain a precursor mixture.
[0053] In order to make the precursor mixture more uniform, it can be mixed according to the following methods:
[0054] (A) Add the carbon nanomaterial and the nitrogen-containing complex to the deionized water at a mass ratio of 1:5 to obtain a suspension;
[0055] (B) Disperse the suspension obtained in st...
Example Embodiment
[0060] Example 2
[0061] A kind of nitrogen-doped carbon nanomaterial, the electron micrograph is like image 3 As shown, including nitrogen-containing heterocyclic compounds and carbon nanomaterials, the mass content of nitrogen is 10.4%. The existence of nitrogen in the nitrogen-containing heterocyclic compound is pyridine nitrogen, pyrrole nitrogen and graphitized nitrogen, and its X-ray photoelectron energy fine spectrum (XPS) is as follows Figure 4 Shown. The carbon nano material is carbon nanotube.
[0062] The nitrogen-doped carbon nanomaterial is prepared according to the following steps:
[0063] (1) The surface-activated carbon nanomaterial and the nitrogen-containing complex are uniformly mixed according to a mass ratio of 1:5 to obtain a precursor mixture.
[0064] To make the precursor mixture more uniform, mix according to the following methods:
[0065] (A) Add the carbon nanomaterial and the nitrogen-containing complex to the deionized water at a mass ratio of 1:5 to...
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