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A kind of bead chain-like graphitized carbon nitride nanomaterial and preparation method thereof

A nanomaterial and graphitization technology, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of poor shape controllability, difficulty in obtaining samples, and high difficulty in synthesis, so as to achieve less surface defects and better application Foreground, good effect of crystallinity

Inactive Publication Date: 2017-08-25
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the template method can obtain samples with different morphologies, the method is complex in process, poor in shape controllability, and difficult to synthesize.
Among them, the high-temperature polymerization method refers to a direct and convenient method for preparing graphitized carbon nitride polymers by polycondensation of precursors under high temperature conditions, but the morphology of samples obtained by this method is mostly large and thick layers. It is difficult to obtain samples of other shapes

Method used

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  • A kind of bead chain-like graphitized carbon nitride nanomaterial and preparation method thereof
  • A kind of bead chain-like graphitized carbon nitride nanomaterial and preparation method thereof
  • A kind of bead chain-like graphitized carbon nitride nanomaterial and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] 1.1 Weigh 1.0g (0.0079mol) melamine into 50mL ethylene glycol, stir for 30min until a uniform initial solution is obtained;

[0036] 1.2 Take 20 mL of the initial solution, add 24 mL of the prepared nitric acid aqueous solution with a concentration of 0.3 mol / L dropwise into the initial solution, and keep stirring for 30 minutes until the precipitate is completely precipitated;

[0037] 1.3 Centrifuge the above precipitate, wash it twice with water, wash it twice with ethanol, and dry it to obtain a white solid powder of the precursor;

[0038] 1.4 Place the precursor solid powder obtained above in a tube furnace, under the protection of a nitrogen atmosphere, raise the temperature to 380°C at a heating rate of 10°C / min, keep it warm for 2 hours for calcination, and cool naturally to room temperature to obtain bead-like graphite Carbon nitride samples (such as figure 2 shown).

[0039] The structural feature of the obtained bead-like chain is: the diameter of the bea...

Embodiment 2

[0042] The preparation method is the same as that in Example 1, except that: after dripping 14.4 mL of nitric acid aqueous solution with a concentration of 0.5 mol / L, the stirring time is 10 min; calcination at 400 °C for 1 h. The morphology of the obtained bead-like graphitized carbon nitride is as follows: image 3 As shown, the structural characteristics of the obtained bead-like chain are: the diameter of the bead-like objects is 300-500nm, and the distance between the bead-like objects is 200-500nm; the diameter of the nanorods connecting the bead-like objects is 80-250nm; the chain length 5-12.5nm.

Embodiment 3

[0044] The preparation method is the same as in Example 1, except that 14.4 mL of nitric acid aqueous solution with a concentration of 0.5 mol / L is added dropwise, the stirring time is 30 min, and the mixture is calcined at 450° C. for 1 h. The morphology of the obtained bead-like graphitized carbon nitride is as follows: Figure 4 As shown, the structural characteristics of the obtained bead-like chain are: the diameter of the bead-like objects is 300-500nm, and the distance between the bead-like objects is 200-500nm; the diameter of the nanorods connecting the bead-like objects is 80-250nm; the chain length 5-12.5nm.

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Abstract

The invention relates to a bead chain-like graphitized carbon nitride nanometer material and a preparation method thereof, belonging to the technical field of semiconductor material preparation. The carbon nitride nanomaterial of the present invention is a bead-like chain structure formed by arranging bead-like protrusions on the surface of graphitized carbon nitride nanorods. 200-800nm, the diameter of the nanorods connecting the bead-like objects is 80-500nm, and the chain length is 5-13.6μm. The preparation method is as follows: dissolving melamine into alcohol solution to obtain an initial solution; then adding nitric acid solution, stirring and depositing to obtain solid powder of carbon nitride precursor, and then obtaining bead chain-like graphitized carbon nitride by calcination nanomaterials. The preparation process is simple, and the obtained product has the advantages of smooth surface, uniform size, good dispersibility, etc., and can be used as a template for preparing other materials, or as a carrier of noble metal nanoparticles.

Description

technical field [0001] The invention belongs to the technical field of semiconductor material preparation, and relates to a bead chain-like graphitized carbon nitride nanometer material and a preparation method thereof. Background technique [0002] Graphite-like carbon nitride is a semiconductor material with a narrow bandgap (2.7eV) and a high carrier recombination rate. Graphite-like carbon nitride has the advantages of good thermal stability and stable chemical properties, as well as the characteristics of metal-free, non-toxic, and visible light response, making it a new type of photocatalyst, which has received extensive attention in the field of catalysts, especially its Photoelectric properties, photodegradation of organic dyes, catalysis of organic reactions, and photolysis of water to produce hydrogen make it widely used in many fields such as electronics, optics, and biology. [0003] At present, there are many methods for preparing nano-graphitized carbon nitrid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/082B82Y30/00B82Y40/00B01J27/24
Inventor 杨萍刘雨萌王俊鹏
Owner UNIV OF JINAN