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A carbon quantum dot based on a copper complex and a preparing method thereof

A technology of carbon quantum dots and copper complexes, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, chemical/physical processes, etc., can solve the problem of weak interaction force and uneven distribution of composite materials Uniformity and other issues, to achieve the effect of good water solubility, high electron transmission efficiency, and wide response range of visible light

Active Publication Date: 2015-07-08
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite material prepared by this method is unevenly distributed, the interaction force is weak, and there are certain defects.

Method used

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  • A carbon quantum dot based on a copper complex and a preparing method thereof
  • A carbon quantum dot based on a copper complex and a preparing method thereof
  • A carbon quantum dot based on a copper complex and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 1.6g of EDTA copper sodium salt and evenly spread it into a quartz boat, and then put the quartz boat into a tube heating furnace. N 2 Bubble for 30 minutes to remove the oxygen in the tube. After 30 minutes, start the heating device, and heat up at a heating rate of 2°C / min. After raising the temperature to 250°C, maintain a constant temperature for 2 hours, then cool down naturally, and take it out after cooling down to room temperature. The reacted sample was dissolved in 50 mL of water, and subjected to ultrasonic oscillation for 20 min in a 100 Hz ultrasonic oscillator, and centrifuged after the part easily soluble in water was completely dissolved. The insoluble material was separated by centrifugation. The centrifuged liquid is further filtered with a 0.25 μm filter membrane to remove substances larger than 0.25 μm. After concentrating the liquid obtained in the previous step, perform dialysis treatment in a 3500D dialysis bag. Part of the salts and sm...

Embodiment 2

[0020] According to the main process method in Example 1, the thermal polymerization temperature was raised to 275° C. to obtain copper complex doped carbon quantum dots, and the copper content of the carbon quantum dots was 1.5%. Used to photocatalyze 1,4-dihydropyridine with a catalytic efficiency of 50.0%

Embodiment 3

[0022] According to the main process method in Example 1, the thermal polymerization temperature was raised to 300° C. to obtain copper complex doped carbon quantum dots, and the copper content of the carbon quantum dots was 1.0%. Used to photocatalyze 1,4-dihydropyridine with a catalytic efficiency of 43.0%

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Abstract

A carbon quantum dot based on a copper complex and a preparing method thereof are disclosed. Copper disodium ethylenediaminetetraacetate having a saturated Schiff base structure is adopted as a raw material, the copper complex and a carbon quantum dot having a structure similar to that of graphene are composited, and the carbon quantum dot based on the copper complex is prepared by a thermo-polymerization method so as to improve electron transfer capability of photosensitizers of this type. The prepared carbon quantum dot based on the copper complex is good in water solubility, electron receptivity, electron releasing capability and electrical conductivity and wide in visible-light response range, and is an excellent photosensitizer. By application of the photosensitizer into a photooxidation reaction of 1,4-dihydropyridine, efficient photo-catalytic oxidation of reactions of this type is achieved and byproducts only comprise water and oxygen.

Description

technical field [0001] The present invention uses copper sodium salt of ethylenediaminetetraacetic acid with a Schiff base-like saturated structure as an organic carbon source, and prepares a copper complex doped compound with good water solubility, wide visible light response range and high electron transport efficiency through high-temperature thermal polymerization reaction. The carbon quantum dots were used as photocatalytic oxidation of 1,4-dihydropyridine and achieved good results. Background technique [0002] Transition metal complexes are of great significance in photocatalytic reactions, but their high cost limits their applications. In contrast, copper complexes have broad application prospects. Most of the traditional copper complexes are organic copper complexes, which have poor water solubility, narrow response range to visible light, and poor photocatalytic effect. However, carbon quantum dots are a kind of good water solubility, low toxicity, good biocompat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J31/22C07D213/133C07D213/16
Inventor 吴文婷战力英吴明铂
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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