Preparation methods of carbon quantum dots and carbon quantum dot and MOFs (Metal Organic Frameworks) composite thin film and product and application of composite thin film

A technology of carbon quantum dots and composite thin films, applied in the field of material preparation, to achieve the effects of mild conditions, good temperature response, and rapid and efficient synthesis

Active Publication Date: 2019-03-15
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of thermometer is not suitable for the measurement of dynamic objects and the test of submicron scale temperature

Method used

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  • Preparation methods of carbon quantum dots and carbon quantum dot and MOFs (Metal Organic Frameworks) composite thin film and product and application of composite thin film
  • Preparation methods of carbon quantum dots and carbon quantum dot and MOFs (Metal Organic Frameworks) composite thin film and product and application of composite thin film
  • Preparation methods of carbon quantum dots and carbon quantum dot and MOFs (Metal Organic Frameworks) composite thin film and product and application of composite thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The microwave method synthesis of embodiment 1 carbon quantum dot

[0060] Weigh 5 grams of glucose and ultrasonically dissolve it in 12.5 milliliters of deionized aqueous solution, then put it into a 50 milliliter microwave reaction tube, and put the cleaned zinc sheet vertically into the reaction tube, seal it, and put it in a microwave instrument. Between 100-130 degrees, the time is 1-2 hours. With the extension of time, carbon quantum dots with higher concentration can be obtained.

[0061] The carbon quantum dot prepared above is carried out transmission electron microscope scanning, obtains the transmission electron microscope scanning figure of carbon quantum dot, specifically as follows figure 1 shown.

Embodiment 2

[0062] Embodiment 2 has the synthesis of the MOFs material of carboxylic acid functional group

[0063] A typical synthesis strategy is: weigh 2.3 grams of zirconium chloride, dissolve it in 50 milliliters of deionized water, then weigh 4.3 grams of pyromellitic acid and add it to obtain a mixture, and stir the above mixture at 100° C. for 24 hours, Obtain a solid material, then centrifuge the solid material with deionized water three times, then disperse it in deionized water at 100°C and continue to stir for 16 hours, then wash it twice with deionized water and acetone, and finally put it into a vacuum at 60°C Dry overnight in a desiccator to obtain MOFs materials with carboxylic acid functional groups.

Embodiment 3

[0064] Embodiment 3 has the synthesis of the MOFs material of carboxylic acid functional group

[0065] The method is the same as in Example 2, except that 1.3 grams of aluminum chloride is used to replace the 2.3 grams of zirconium chloride.

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Abstract

The invention provides preparation methods of carbon quantum dots and a carbon quantum dot and MOFs (Metal Organic Frameworks) composite thin film, and a product and application of the composite thinfilm. The preparation method of the carbon quantum dots, which is provided by the invention, is simple and efficient. Moreover, by loading the prepared carbon quantum dots on MOFs, a carbon quantum dot and MOFs composite material is obtained; by adopting a bran-new method, namely, an electrophoresis method, the composite material is prepared into a thin film device; and a result that the device can be used for aspects of temperature sensing and the like is discovered.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a preparation method of carbon quantum dots, a composite film of carbon quantum dots and MOFs, as well as products and uses thereof. Background technique [0002] Carbon quantum dots are carbon materials with a size between 2-10nm. Compared with traditional semiconductor quantum dots, carbon quantum dots are highly soluble and chemically inert (not easy to react with other substances), but also have the advantages of low toxicity and good biocompatibility. In addition, carbon quantum dots can be electron donors and acceptors at the same time, so they have great application prospects in the fields of sensing, optics and photocatalysis. This makes the efficient preparation of carbon quantum dots extremely important. At the same time, how to obtain a highly dispersed solid carbon quantum dot or composite material is also a research hotspot at present. [0003] Metal Organic Fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15C25D13/04G01K11/00
CPCC25D13/04G01K11/00
Inventor 冯吉飞高水英曹荣
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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