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Biomass carbon dot preparation method based on sulfonic acid type eutectic solvent

A technology of deep eutectic solvent and biomass carbon, applied in chemical instruments and methods, nanocarbon, nanotechnology, etc., can solve the problems of harsh and complex preparation conditions of biomass carbon dots

Pending Publication Date: 2021-06-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the preparation of biomass carbon dots still has the disadvantages of harsh and complex preparation conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The chloride powder was mixed with 5 g of chloride / chloride / methanesulfonic acid (1: 0.25, n: n), and 50 ml of water was added at 100 ° C; after standing for 12 h, centrifugation The supernatant was separated, and the supernatant was transferred to a dialysis bag having a molecular weight of 500 dA, placed in aqueous solution, dialyzing 12h; dialyzed, the liquid obtained in the dialysis bag is a carbon dot aqueous solution, and the blue fluorescence was excited at 365 nm.

Embodiment 2

[0015] The chloride powder was mixed with a mixture of 5 g of chloride / chloride / methanesulfine (1: 4, N: N), after 1 h, 100 ° C, add 50 ml of aqueous solution; after standing for 12 h, centrifugation The supernatant was separated, and the supernatant was transferred to a dialysis bag having a total molecular weight of 1000 da, placed in aqueous solution, dialyzed 48 h; dialyzed, the liquid obtained in the dialysis bag is a carbon dot aqueous solution, and the blue fluorescence was excited at 365 nm.

Embodiment 3

[0017] The chloride powder was 0.5 g of chloride / chloride / chloride (1: 0.25, N: N) with 25 g of chloride (1: 0.25, N: N), after 1 h at 100 ° C, 100 ml of aqueous solution was added; after standing for 24 h, centrifugation The supernatant was separated, and the supernatant was transferred to a dialysis bag with a total molecular weight of 500 dA, placed in an aqueous solution, dialyzed 48h; dialyzed, the liquid obtained in the dialysis bag is a carbon dot water solution, and the blue fluorescence is excited at 365 nm. .

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Abstract

The invention provides a biomass carbon dot preparation method based on a sulfonic acid type eutectic solvent, which specifically comprises the following steps: respectively mixing chitin, bovine serum albumin and microcrystalline cellulose powder with choline chloride / p-toluene sulfonic acid, choline chloride / sulfamic acid, choline chloride / methane sulfonic acid, betaine / p-toluene sulfonic acid, betaine / sulfamic acid, choline chloride / methane sulfonic acid according to a mass ratio of 1: 10-1: 50, and reacting at 100-150 DEG C for 1-10 hours; after the reaction is finished, adding 50-100mL of water, performing standing for 12-24 hours, performing centrifugal separation to obtain supernate, transferring the supernate into a dialysis bag, putting the dialysis bag into an aqueous solution, and dialyzing for 24-48 hours; wherein after dialysis, the liquid obtained in the dialysis bag is the carbon dot aqueous solution.

Description

[0001] The present invention belongs to the field of nanomaterial preparation, and it is directed to a biomass carbon dot preparation method based on a sulfonic acid type low-molten solvent. Background technique [0002] The carbon dot is used as a new type of zero-dimensional nanomaterial, which is widely used in the field of metal ion detection, biological imaging and anti-counterfeiting identification, which can be regulated fluorescence emission and high chemical stability. With the development of sustainable chemistry, it is gradually a hot spot to prepare carbon dot materials for the renewable carbon source biomass. [0003] At present, the method based on biomass preparing carbon dots mainly has hydrothermal, microwave method and burst. For example, patent CN201610235777.5 prepared a carbon dot derived from chitosan using hydrothermal. Specifically, Zn (OH) is respectively 2 Co (OH) 2 Ni (OH) 2 Or Mn (OH) 2 Composite hydrogel prepared with chitosan, placed in a hydrothermal ...

Claims

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Application Information

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IPC IPC(8): C09K11/65B82Y20/00B82Y40/00C01B32/15
CPCB82Y20/00B82Y40/00C09K11/65C01B32/15
Inventor 冯咪孙剑王雨萌陈欣妍高艾京
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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