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Carbonnanoscroll, preparation method and application thereof and carbon nano belt

A carbon nano-roll and carbon nano-dot technology, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of high requirements for carbon nano-roll preparation conditions, limitation of mass production and application, and complicated preparation steps. Achieve the effect of easy large-scale batch preparation, good photothermal conversion performance, and good application prospects

Active Publication Date: 2020-09-01
UNIVERSITY OF MACAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, these methods for preparing carbon nanoscrolls require high preparation conditions, cumbersome preparation steps, and high preparation difficulties, which limit their mass production and application in biomedical fields such as drug carriers, imaging reagents, and vaccines.

Method used

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  • Carbonnanoscroll, preparation method and application thereof and carbon nano belt
  • Carbonnanoscroll, preparation method and application thereof and carbon nano belt
  • Carbonnanoscroll, preparation method and application thereof and carbon nano belt

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preparation example Construction

[0025] Some embodiments of the present invention provide a method for preparing carbon nanoscrolls, which includes: placing carbon nanodots in a polar aprotic solvent for solvothermal reaction to form carbon nanoscrolls, wherein the surface of carbon nanodots It has an active site, and the active site includes one or more of hydroxyl, carboxyl and amino groups.

[0026] The inventor found in the long-term research and practice process that in the process of preparing carbon nanomaterials by solvothermal method, the choice of solvent has a great influence on the reaction process, specifically, in the process of preparing carbon nanodots by solvothermal method Since the process of generating carbon nano-dots is a dehydration process, the carbon nano-dots will not continue to grow due to the presence of water and the proton solvent used in the original solvothermal reaction after the reaction to generate carbon nano-dots. Based on this, the inventor has done a lot of research and...

Embodiment 1

[0052] 1g of citric acid and 3g of urea were dissolved in 30mL of DMSO to obtain a transparent solution, placed in a 50mL polytetrafluoroethylene autoclave, and reacted at 160°C for 4h, and 60mL of ethanol was added to the reacted solution to obtain a black solid, which was washed with water and centrifuged ( 8000rpm, 5min), freeze-dried to obtain dark blue powder, that is, carbon nanodots.

[0053] Dissolve the above-mentioned carbon nano-dots in dimethyl sulfoxide according to the dosage of 1g: 30mL, place the obtained dimethyl sulfoxide solution in a 50ml polytetrafluoroethylene autoclave, heat the reaction, and the reaction temperature is 180°C. The reaction time is 4 hours, the heating method is oven heating, and 60 mL of ethanol is added to the reacted solution to obtain a black solid, which is washed with water, centrifuged, and freeze-dried to obtain a powder, that is, carbon nanovolumes.

Embodiment 2

[0055] Dissolve the carbon nanoscrolls obtained in Example 1 in water at a concentration of 0.1 mg / mL, and irradiate the carbon nanoscrolls solution with a 655nm laser for 30 minutes, and the laser power is preferably 1w / cm 2 .

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Abstract

The invention discloses a carbon nanoscroll, a preparation method and application thereof, and a carbon nanobelt. The preparation method of thecarbon nanoscrollcomprises the steps that carbon nanodotsare subjected to a solvothermal reaction in a polar aprotic solvent to form the carbon nanoscroll, wherein the surfaces of the carbon nanodots are provided with active sites, and the active sites comprise one or more of hydroxyl, carboxyl and amino. The preparation method comprises the following steps:solvothermal reaction is carried out on carbon nanodots; active sites (hydroxyl, carboxyl, amino, carbonyl and the like) on the surfaces of the carbon nanodots are subjected to dehydration fusion growth among particles in the polar aprotic solvent; and at last rolling is realized to form the carbon nanoscroll. The invention further provides a new method for preparing the carbon nanoscroll, and the carbon nanoscroll has the characteristics of near-infrared absorption and near-infrared luminescence relative to carbon nanodots, and also has good photothermal conversion performance at the same time. The preparation method is simple, low in cost and easy for large-scale batch preparation, andhas a good application prospect in the fields of photo-thermal conversion materials, photo-thermal therapy, drug carriers and the like.

Description

technical field [0001] The invention relates to the technical field of carbon nanomaterials, in particular to a carbon nanoroll, its preparation method and application, and a carbon nanobelt. Background technique [0002] Carbon NanoScroll (CNS) is a new type of carbon-based nanomaterial formed by two-dimensional graphene coils. Carbon nanoscrolls have the characteristics of good luminescent properties, low toxicity, low cost and good biocompatibility, which makes carbon nanoscrolls have great application prospects as nanomaterials in the field of biomedicine. [0003] At present, there are three common methods for preparing carbon nanoscrolls in the laboratory: arc discharge, ultrasonic exfoliation of graphite sheets, and isopropanol rolling up of single-layer graphene sheets. [0004] However, these methods for preparing carbon nanoscrolls require high preparation conditions, cumbersome preparation steps, and high preparation difficulties, which limit their mass productio...

Claims

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Application Information

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IPC IPC(8): C01B32/18
CPCC01B32/18
Inventor 曲松楠汤子康梁桃
Owner UNIVERSITY OF MACAU
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