Bead-chain-like graphitized carbon nitride nano material and preparation method thereof

A technology of nanomaterials and carbon nitride, which is 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 prospect, good effect of crystallinity

Inactive Publication Date: 2015-10-21
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 me

Method used

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  • Bead-chain-like graphitized carbon nitride nano material and preparation method thereof
  • Bead-chain-like graphitized carbon nitride nano material and preparation method thereof
  • Bead-chain-like graphitized carbon nitride nano material and preparation method thereof

Examples

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Example Embodiment

[0034] Example 1

[0035] 1.1 Weigh 1.0g (0.0079mol) of melamine and add it to 50mL of 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 0.3mol / L nitric acid aqueous solution dropwise to the initial solution, continue to stir for 30 minutes, until the precipitation is completely precipitated;

[0037] 1.3 After centrifugal separation, the precipitate was washed twice with water, then washed twice with ethanol and dried to obtain a white solid powder of the precursor;

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

[0039] The resulting bead-like chain-like structure has the following characteristics: the ...

Example Embodiment

[0041] Example 2

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

Example Embodiment

[0043] Example 3

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

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Abstract

The invention relates to a bead-chain-like graphitized carbon nitride nano material and a preparation method thereof and belongs to the technical field of semi-conductor material preparation. The bead-chain-like graphitized carbon nitride nano material adopts a bead-chain-like structure formed by arranging raised bead-like objects on the surfaces of graphitized carbon nitride nano-rods, wherein the diameter of the bead-like objects is 200-800 nm; the space between the bead-like objects is 200-800 nm; the nano-rods connected with the bead-like objects are 80-500 nm in diameter, and 5-13.6 [mu]m in chain length. The preparation method comprises the following steps: dissolving melamine into an alcohol solution to obtain an initial solution; then adding a nitric acid solution, stirring and precipitating to produce carbon nitride precursor solid powder; after that, forging to obtain the bead-chain-like graphitized carbon nitride nano material. The preparation process is simple, and the obtained product has the advantages of smooth surface, uniform size, relatively good dispersity and the like, and can serve as a template for preparing other materials or as carriers of noble metal nano-particles.

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