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Carbon dot-based room-temperature phosphorescent composite material and preparation method thereof

A room temperature phosphorescence, composite material technology, applied in luminescent materials, chemical instruments and methods, nanotechnology for materials and surface science, etc., can solve the problems of phosphorescence green, performance limitations, etc. Effect

Active Publication Date: 2022-06-28
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Now more and more inorganic long afterglow materials, such as molecular sieves, double-layer hydroxides, silica, urea, etc., have also joined the family of carbon dot-based long afterglow materials. However, the existing long afterglow materials still exist. Disadvantages: due to performance limitations, the existing long afterglow materials can only combine with a few carbon dots to produce phosphorescence, and most of the phosphorescence produced are green

Method used

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  • Carbon dot-based room-temperature phosphorescent composite material and preparation method thereof
  • Carbon dot-based room-temperature phosphorescent composite material and preparation method thereof
  • Carbon dot-based room-temperature phosphorescent composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] The carbon dot-based room temperature phosphorescent composite material disclosed in this embodiment is characterized in that: it is composed of Y(OH) 3 Precursor and carbon dot material composition.

[0036] In this embodiment, the carbon dot material is dispersed in the Y(OH) 3 In the precursor, the amount of carbon dot material added can be added according to actual needs, as long as the UV-excited carbon dot-based room temperature phosphorescent composite material can be guaranteed to emit light.

[0037] The preparation method of the above-mentioned carbon dot-based room temperature phosphorescent composite material comprises the following steps:

[0038] S1. Add carbon dot material to Y (NO 3 )3 In the solution, after stirring uniformly, add NaOH solution and continue stirring uniformly to obtain a mixed material solution;

[0039] S2, heating the mixed material solution prepared in S1 at 180° C. for 12 hours to obtain a white precipitate, which is centrifuged,...

Embodiment 2

[0046] The carbon dot-based room temperature phosphorescent composite material disclosed in this embodiment is characterized in that: it is composed of Y(OH) 3 Precursor and carbon dot material composition.

[0047] In this embodiment, the carbon dot material is dispersed in the Y(OH) 3 In the precursor, the amount of carbon dot material added can be added according to actual needs, as long as the UV-excited carbon dot-based room temperature phosphorescent composite material can be guaranteed to emit light.

[0048] The preparation method of the above-mentioned carbon dot-based room temperature phosphorescent composite material comprises the following steps:

[0049] S1. Add carbon dot material to Y (NO 3 ) 3 In the solution, after stirring uniformly, add NaOH solution and continue stirring uniformly to obtain a mixed material solution;

[0050] S2, heating the mixed material solution prepared in S1 at 160° C. for 15 hours to obtain a white precipitate, which is centrifuge...

Embodiment 3

[0057] The carbon dot-based room temperature phosphorescent composite material disclosed in this embodiment is characterized in that: it is composed of Y(OH) 3 Precursor and carbon dot material composition.

[0058] In this embodiment, the carbon dot material is dispersed in the Y(OH) 3 In the precursor, the amount of carbon dot material added can be added according to actual needs, as long as the UV-excited carbon dot-based room temperature phosphorescent composite material can be guaranteed to emit light.

[0059] The preparation method of the above-mentioned carbon dot-based room temperature phosphorescent composite material comprises the following steps:

[0060] S1. Add carbon dot material to Y (NO 3 ) 3 In the solution, after stirring uniformly, add NaOH solution and continue stirring uniformly to obtain a mixed material solution;

[0061] S2, heating the mixed material solution prepared in S1 at 200° C. for 10 hours to obtain a white precipitate, which is centrifuge...

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Abstract

The invention relates to the technical field of new materials, in particular to a carbon-dot-based room-temperature phosphorescent composite material and a preparation method thereof, and an ultraviolet-excited carbon-dot-based room-temperature phosphorescent composite material, which is composed of a Y (OH) 3 precursor and a carbon dot material, can be formed by compounding a plurality of carbon dots, realizes emission of a plurality of phosphorescence, and can be used as a light emitting material. The preparation method of the carbon-dot-based room-temperature phosphorescent composite material is simple, easy to operate and suitable for large-scale production and application.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a carbon dot-based room temperature phosphorescent composite material and a preparation method thereof. Background technique [0002] Due to its low preparation cost, simple preparation, and many excellent physical and chemical properties, carbon dots are ideal long afterglow materials. Carbon dots overcome the problems of difficult passivation, high toxicity, high cost, and low luminous efficiency in the synthesis of traditional afterglow materials such as semiconductor quantum dots, organic fluorescent molecules, and rare earth-based phosphors. In addition, because of the abundant functional groups on the surface of carbon dots, it is easy to modify and flexible to prepare, and the multi-color luminescence and multi-mode luminescence of carbon dot-based long afterglow materials can be realized by design, and the material also has strong tunability. Compared with general ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65C09K11/77B82Y20/00B82Y30/00
CPCC09K11/65C09K11/77B82Y20/00B82Y30/00
Inventor 庄健乐梁萍郑义浩魏浩鹏许晓凯刘应亮胡超凡
Owner SOUTH CHINA AGRI UNIV
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