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Preparation method of carbon dot hybridization polyhedral nickel oxide photocatalyst

A nickel oxide, photocatalyst technology, applied in the preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, preparation of aminohydroxy compounds, etc., can solve the lack of effective preparation methods for polyhedral nanostructured hybrid materials, etc. problem, to achieve the effect of strong visible light absorption

Active Publication Date: 2018-02-23
ZHONGBEI UNIV
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Problems solved by technology

[0004] The present invention aims to provide a method for preparing a carbon-dot hybrid polyhedral nickel oxide photocatalyst with simple process, easy control and high yield in view of the current lack of effective preparation methods for polyhedral nanostructure hybrid materials

Method used

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  • Preparation method of carbon dot hybridization polyhedral nickel oxide photocatalyst
  • Preparation method of carbon dot hybridization polyhedral nickel oxide photocatalyst
  • Preparation method of carbon dot hybridization polyhedral nickel oxide photocatalyst

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preparation example Construction

[0023] The preparation method of the carbon point hybrid polyhedral nickel oxide photocatalyst adopts the following steps:

[0024] (1) Mix 60% formic acid with 20% hydrogen peroxide at a volume ratio of 11-15:1 to prepare a mixed solution;

[0025] (2) Take 18-26 milliliters of mixed solution and add fluorescent carbon dots prepared by oxidation etching coal, pitch, activated carbon, graphite or carbon black, and make the concentration of carbon dots in the mixed solution be 1.6-3.0g / L;

[0026] (3) Add nickel powder or foamed nickel to the mixed solution of step (2), and after stirring continuously at a constant temperature of 30° C. for 10-15 hours, remove unreacted nickel powder and foamed nickel;

[0027] (4) Heat the mixed solution obtained in step (3) until it becomes a solid, then heat the obtained solid at 180-200°C for 0.5-3 hours, then cool it down to room temperature naturally, and collect the remaining solid powder to obtain carbon dots. Polyhedral nickel oxide p...

Embodiment 1

[0030] The preparation method of the carbon point hybrid polyhedral nickel oxide photocatalyst adopts the following steps:

[0031] (1) Mix 60% formic acid with 20% hydrogen peroxide at a volume ratio of 11:1 to prepare a mixed solution;

[0032] (2) Take 18 milliliters of mixed solution and add fluorescent carbon dots prepared by oxidation etching coal, pitch, activated carbon, graphite or carbon black, and make the concentration of carbon dots in the mixed solution be 1.6g / L;

[0033] (3) Add nickel powder or foamed nickel to the mixed solution of step (2), and after stirring continuously at a constant temperature of 30° C. for 12 hours, remove unreacted nickel powder and foamed nickel;

[0034] (4) Heat the mixed solution obtained in step (3) until it becomes a solid, then keep the obtained solid at 180-°C for 1 hour, then cool it down to room temperature naturally, and collect the remaining solid powder to obtain carbon-dot hybrid polyhedral nickel oxide photocatalyst.

...

Embodiment 2

[0037] The preparation method of the carbon point hybrid polyhedral nickel oxide photocatalyst adopts the following steps:

[0038] (1) Mix 60% formic acid with 20% hydrogen peroxide at a volume ratio of 13:1 to prepare a mixed solution;

[0039] (2) Take 22 milliliters of mixed solution and add fluorescent carbon dots prepared by oxidation etching coal, pitch, activated carbon, graphite or carbon black, and make the concentration of carbon dots in the mixed solution be 2.0g / L;

[0040] (3) Add nickel powder or foamed nickel to the mixed solution of step (2), and after stirring continuously for 13 hours at a constant temperature of 30° C., remove unreacted nickel powder and foamed nickel;

[0041] (4) Heat the mixed solution obtained in step (3) until it becomes solid, then keep the obtained solid at 190°C for 2 hours, then cool it down to room temperature naturally, and collect the remaining solid powder to obtain carbon-dot hybrid polyhedral nickel oxide photocatalyst.

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Abstract

The invention discloses a preparation method of a carbon dot hybridization polyhedral nickel oxide photocatalyst. According to the method, the carbon dot hybridization polyhedral nickel oxide photocatalyst is prepared by the steps of formic acid and hydrogen peroxide mixed solution preparation, fluorescent carbon dot mixing, nickel addition and dehydration decomposition. The preparation method ofthe carbon dot hybridization polyhedral nickel oxide photocatalyst has the advantages of simple process, easiness in control, high yield and the like.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials and catalysis, and relates to a preparation method of a carbon point hybrid polyhedral nickel oxide photocatalyst. Background technique [0002] Carbon dots are carbon nanoparticles mainly composed of carbon elements and have fluorescence emission properties. It not only has the advantages of simple preparation process, low cost, non-toxic elements, green, etc., but also has semiconductor-like properties, photon absorption in a wide range of wavelengths and excellent Therefore, carbon dots have important application value in the field of solar energy conversion and storage. The hybridization or recombination of carbon dots with other semiconductor nanostructures not only helps to improve the capture of solar energy, but also helps to improve the separation and transfer of photogenerated charges, thereby improving the photocatalytic activity of the catalyst. A large number of studies h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B82Y30/00C07C213/02C07C215/76
CPCB82Y30/00C07C213/02B01J23/755B01J35/39C07C215/76
Inventor 胡胜亮宋振超李宁薛超锐常青杨金龙
Owner ZHONGBEI UNIV
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