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Preparation method of graphene/carbon dot/magnetic composite material

A magnetic composite material and graphene technology, applied in the direction of magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc., to achieve the effect of diverse functions, good application requirements, and excellent magnetic properties

Active Publication Date: 2017-05-10
SUZHOU FANGSHENG OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of scientific research, single graphene, carbon dots and magnetic materials have been difficult to meet the needs of the development of various disciplines, so there is an urgent need for a multifunctional composite material
In the prior art, there are few research reports on graphene / carbon dots / magnetic composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of graphene / carbon dot / magnetic composite material, comprising the steps of:

[0029] S1. Add xylitol, lysine, serine and hydrogen peroxide into deionized water, first perform ultrasonic treatment at 300W, 40kHz for 2h, then conduct microwave heating treatment at 110°C for 30min, and cool to room temperature; The molar ratio of xylitol, lysine, serine, hydrogen peroxide and deionized water is 10:0.2:0.1:0.5:15;

[0030] S2. Add Fe salt and Ni salt to step S1, ultrasonicate at 50W ultrasonic power for 60min, then add mixed acid and mix evenly, and reflux at 150°C for 3 hours; the Fe salt is iron acetylacetonate, and the Ni salt For nickel acetylacetonate, the molar ratio of the Fe salt and the Ni salt is 1:1; the molar ratio of the Fe salt and the mixed acid is 7:1; the molar ratio of the mixed acid is Be the mixture of 20wt.% nitric acid and 35wt.% hydrochloric acid of 2:1;

[0031] The molar ratio of xylitol to the Fe salt is 10:0.1;

[0032] S3...

Embodiment 2

[0037] A preparation method of graphene / carbon dot / magnetic composite material, comprising the steps of:

[0038] S1. Add xylitol, lysine, serine and hydrogen peroxide into deionized water, first perform ultrasonic treatment at 300W, 40kHz for 4h, then conduct microwave heating treatment at 150°C for 5min, and cool to room temperature; The molar ratio of xylitol, lysine, serine, hydrogen peroxide and deionized water is 10:0.7:0.4:1.3:22;

[0039] S2. Add Fe salt and Ni salt to step S1, ultrasonicate at 50W ultrasonic power for 20min, then add mixed acid and mix evenly, and reflux at 180°C for 1 hour; the Fe salt includes iron nitrate, and the Ni salt is Nickel nitrate, the molar ratio of the Fe salt and the Ni salt is 3:1; the molar ratio of the Fe salt and the mixed acid is 12:1; the molar ratio of the mixed acid is 2 : 1 mixture of 20wt.% nitric acid and 35wt.% hydrochloric acid;

[0040] The molar ratio of xylitol to the Fe salt is 10:0.7;

[0041] S3. Dialyzing the reac...

Embodiment 3

[0046] A preparation method of graphene / carbon dot / magnetic composite material, comprising the steps of:

[0047]S1. Add xylitol, lysine, serine and hydrogen peroxide into deionized water, first perform ultrasonic treatment at 300W, 40kHz for 3h, then conduct microwave heating treatment at 130°C for 18min, and cool to room temperature; The substance ratio of xylitol, lysine, serine, hydrogen peroxide and deionized water is 10:0.4:0.3:0.9:18;

[0048] S2. Add Fe salt and Ni salt to step S1, sonicate at 120W ultrasonic power for 40 minutes, then add mixed acid and mix evenly, and reflux at 165°C for 2 hours; the molar ratio of Fe salt is 1:3 The mixture of iron acetylacetonate and iron nitrate, the Ni salt is a mixture of nickel acetylacetonate and nickel nitrate in a mass ratio of 2:1, and the mass ratio of the Fe salt and Ni salt is 2:1; The molar ratio of the Fe salt and the mixed acid is 10:1; the mixed acid is a mixture of 20wt.% nitric acid and 35wt.% hydrochloric acid wi...

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Abstract

The invention discloses a preparation method of a graphene / carbon dot / magnetic composite material. The preparation method comprises the following steps of S1, adding xylitol, lysine, serine and hydrogen peroxide into deionized water, performing ultrasound processing and performing microwave heating process; S2, adding a Fe salt and a Ni salt, performing ultrasound, adding a mixed acid, and performing backflow reaction; S3, performing dialysis to obtain a solution A; S4, placing graphene oxide in the deionized water, performing ultrasound dispersion, adding an additive B and hydrazine hydrate, and performing microwave hydrothermal reaction to obtain a reactant C; and S5, performing uniform ultrasound dispersion on the reactant C and the solution A, performing microwave hydrothermal reaction, and performing washing, freezing, drying and heat preservation under 250-300 DEG C, thereby obtaining the graphene / carbon dot / magnetic composite material. The graphene / carbon dot / magnetic composite material prepared according to the method has excellent magnetic performance, photocatalytic degradation and photocatalytic stability, the performances of graphene, carbon dots and a magnetic material are combined, through mutual effects, functions are versatile, and the application demand can be satisfied better.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method for preparing a graphene / carbon dot / magnetic composite material. Background technique [0002] Graphene is carbon atoms with sp 2 The mixed orbital domain is a single-layer two-dimensional crystal composed of a honeycomb lattice arrangement. Due to its strong toughness, electrical conductivity, and thermal conductivity, graphene has good potential application value in many fields, and it can be applied to a large number of fields such as electronics, optics, biomedicine, and daily life in the future. [0003] Carbon dots (C-dots) are a class of spherical carbon nanomaterials with a size below 10nm. Compared with traditional heavy metal quantum dots, it has the advantages of controllable size, good biocompatibility and non-toxicity. Carbon quantum dots are also considered to be a basic structural unit of future nanoelectronic devices and a new ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/01H01F41/00
CPCH01F1/0045H01F1/01H01F41/00
Inventor 洪果李述汤
Owner SUZHOU FANGSHENG OPTOELECTRONICS CO LTD
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