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Preparation method of neodymium-doped carbon quantum dot composite material with hemp being carbon source

A technology of carbon quantum dots and composite materials, which is applied in the field of nano-luminescent material preparation, can solve problems such as environmental pollution and hemp resource waste, and achieve the effects of good biocompatibility, small size and simple operation

Inactive Publication Date: 2018-11-16
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, about 2% of the short fibers in the textile process are wastes. The incomplete utilization of these wastes is a serious waste of hemp resources and pollutes the environment where the enterprise is located.

Method used

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  • Preparation method of neodymium-doped carbon quantum dot composite material with hemp being carbon source
  • Preparation method of neodymium-doped carbon quantum dot composite material with hemp being carbon source
  • Preparation method of neodymium-doped carbon quantum dot composite material with hemp being carbon source

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) A solution configuration: In the reactor, add deionized water: 97 mL, neodymium chloride: 3g, heat and stir to dissolve, cool to room temperature, stir evenly, and obtain A solution;

[0023] (2) B solution configuration: In the reactor, add methanol: 120mL, quercetin: 5g20mL, heat and stir to dissolve, cool to room temperature, stir evenly, and obtain B solution;

[0024] (3) Preparation of quercetin neodymium complex: put 40 mL of solution B in a reactor, stir, and raise the temperature to 65±2°C, add 20 mL of solution A to solution B dropwise, and use volume Adjust the pH to 8.5 with 15% ammonia water, keep the temperature at 65±2°C, stir and react for 8 hours, a large amount of brown precipitate can be obtained, centrifuged, washed with distilled water until neutral, and then washed with methanol for 2~ 3 times. Vacuum drying obtains quercetin neodymium complex;

[0025] (4) Preparation of neodymium-doped carbon quantum dot composite material: In a reaction ke...

Embodiment 2

[0027] (1) A solution configuration: In the reactor, add deionized water: 95 mL, neodymium chloride: 5g, heat and stir to dissolve, cool to room temperature, stir evenly, and obtain A solution;

[0028] (2) B solution configuration: In the reactor, add methanol: 116mL, quercetin: 8g, heat and stir to dissolve, cool to room temperature, stir evenly, and obtain B solution;

[0029] (3) Preparation of quercetin neodymium complex: put 36 mL of solution B in a reactor, stir, and raise the temperature to 65±2°C, add 20 mL of solution A to solution B dropwise, and use volume Adjust the pH to 8.5 with 15% ammonia water, keep the temperature at 65±2°C, stir and react for 8 hours, a large amount of brown precipitate can be obtained, centrifuged, washed with distilled water until neutral, and then washed with methanol for 2~ 3 times. Vacuum drying obtains quercetin neodymium complex;

[0030] (4) Preparation of neodymium-doped carbon quantum dot composite material: In a reaction kettle...

Embodiment 3

[0032] (1) A solution configuration: In the reactor, add deionized water: 98 mL, neodymium chloride: 2g, heat and stir to dissolve, cool to room temperature, stir evenly, and obtain A solution;

[0033] (2) Solution B configuration: In the reactor, add methanol: 122mL, quercetin: 4g, heat and stir to dissolve, cool to room temperature, stir evenly, and obtain B solution;

[0034] (3) Preparation of quercetin neodymium complex: put 44 mL of solution B in a reactor, stir, and raise the temperature to 65±2°C, add 20 mL of solution A to solution B dropwise, and use volume Adjust the pH to 8.5 with 15% ammonia water, keep the temperature at 65±2°C, stir and react for 8 hours, a large amount of brown precipitate can be obtained, centrifuged, washed with distilled water until neutral, and then washed with methanol for 2~ 3 times. Vacuum drying obtains quercetin neodymium complex;

[0035] (4) Preparation of neodymium-doped carbon quantum dot composite material: In a reaction kettle...

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Abstract

The invention discloses a preparation method of a neodymium-doped carbon quantum dot composite material with hemp being a carbon source. The preparation method is characterized by including: firstly,performing a reaction to neodymium chloride and quercetin to prepare a quercetin-neodymium complex; adding components including, by mass, 93-96% of 3-methylimidazole chloride, 3-6% of a hemp powder and 0.5-1.5% of the quercetin-neodymium complex into a reaction kettle with a polytetrafluoroethylene lining, closing a seal cover, placing the reaction kettle in a constant temperature box, and performing a reaction at constant temperature of 110 + / - 2 DEG C for 6 hours to obtain a brown transparent liquid, which is the neodymium-doped carbon quantum dot composite material. The preparation method is green and environment-friendly and is simple in operation. The neodymium-doped carbon quantum dot composite material has high fluorescence property stability, small size, uniform appearance and goodbiocompatibility without secondary modification; by doping the rare earth element, neodymium, the fluorescence property is enhanced by about 60%.

Description

technical field [0001] The invention belongs to the technical field of nano-luminescent material preparation, and in particular relates to a preparation method and application of a neodymium-doped carbon quantum dot composite material made of hemp as a carbon source. Background technique [0002] Carbon quantum dots are a new type of zero-dimensional carbon nanomaterials following fullerene, carbon nanotubes and graphene. Easy to functionalize, it is defined as an ideal fluorescent labeling and detection material. In addition to the wide application of carbon quantum dots, the research on composite materials based on carbon quantum dots is also a hot topic at present. Composite materials are composed of two or more than two different materials. Each component material cooperates with each other, not only exerting its own advantages, but also possessing new properties. Therefore, the study of composite materials based on carbon quantum dots is an important topic of function...

Claims

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Application Information

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IPC IPC(8): C09K11/65B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09K11/7756
Inventor 李慧芝李晓峰许崇娟
Owner UNIV OF JINAN
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