Method for preparing poly 1,5-diamino-anthraquinone modified graphene nanometer composite material

Abstract

The invention belongs to the field of materials and relates to a method for preparing a poly 1,5-diamino-anthraquinone modified graphene nanometer composite material. The method comprises the following steps: (1) slowly adding an acid organic solution containing an oxidizing agent into acid sol containing a 1,5-diamino-anthraquinone monomer and graphite oxide; (2) reacting the mixed sol at a constant temperature, thereby obtaining an intermediate product; (3) washing the intermediate product by using deionized water until the filtrate is neutral; (4) reducing the product obtained in the step (3); (5) washing the precipitate obtained in the step (4) by using the deionized water, and performing centrifugal separation, thereby obtaining powder; (6) performing vacuum drying, thereby obtaining the 1,5-diamino-anthraquinone modified graphene nanometer composite powder. The cost is low, the scheme is simple and feasible, and the synthetic 1,5-diamino-anthraquinone modified graphene nanometer composite material can be widely applied to the fields of secondary batteries, supercapacitors, microwave absorption coatings and sensors.

Description

technical field

[0001] The invention relates to a preparation method of a nano-composite material, in particular to a preparation method of a poly-1,5-diaminoanthraquinone-modified graphene nano-composite material, belonging to the field of materials. Background technique

[0002] Poly-1,5-diaminoanthraquinone is a conjugated polymer with multifunctional groups, which has functional groups such as ladder-shaped conjugated fused rings, amino groups, and benzoquinone groups. It has good electrochemical activity, microwave absorption characteristics, and biocatalysis activity and other excellent properties. The conductive polyaniline skeleton and quinone redox active groups in the poly1,5-diaminoanthraquinone molecule make it have a high theoretical energy density as a cathode material for lithium-ion batteries (Xu Guoxiang, Qi Lu, Wen Lei, Liu Guoqiang, Ci Yun Xiang. Poly-1,5-diaminoanthraquinone cathode materials for secondary lithium batteries. Acta Polymerica Sinica. 6 (20...

Examples

Embodiment 1

[0025] (1) Ingredients

[0026] Dissolve 98% sulfuric acid in N,N-dimethylformamide (DMF) to make 100 mL acidic organic solution, the concentration of sulfuric acid is 1.5 molL -1 , and divided into two parts of 50 mL each; then 10 mmol 1,5-diaminoanthraquinone and 0.05 g graphite oxide were added to one part of the DMF acidic solution, ultrasonically dispersed to obtain a purple-brown sol (sol A), and then the oxidant was dissolved in another part of DMF acidic solution, and slowly added dropwise to Sol A to obtain a mixed sol.

[0027] (2) constant temperature reaction

[0028] Seal the mouth of the beaker with plastic wrap to prevent dust from entering the mixed sol obtained in step (1), and let it stand at room temperature for 24 hours to obtain the intermediate product poly-1,5-diaminoanthraquinone-modified graphene oxide nanocomposite powder;

[0029] (3) washing

[0030] The precipitate obtained in step (2) is washed with deionized water and then centrifuged, the cen...

Embodiment 2

[0039] Repeat Example 1, and replace the potassium dichromate in Example 1 with potassium permanganate and hydrochloric acid to obtain poly-1,5-diaminoanthraquinone modified graphene nanocomposite powder.

Embodiment 3、4

[0041] Repeat Example 1, and replace the sulfuric acid in Example 1 with nitric acid and perchloric acid, respectively, to obtain poly-1,5-diaminoanthraquinone-modified graphene nanocomposite powder.

technical field

[0001] The invention relates to a preparation method of a nano-composite material, in particular to a preparation method of a poly-1,5-diaminoanthraquinone-modified graphene nano-composite material, belonging to the field of materials. Background technique

[0002] Poly-1,5-diaminoanthraquinone is a conjugated polymer with multifunctional groups, which has functional groups such as ladder-shaped conjugated fused rings, amino groups, and benzoquinone groups. It has good electrochemical activity, microwave absorption characteristics, and biocatalysis activity and other excellent properties. The conductive polyaniline skeleton and quinone redox active groups in the poly1,5-diaminoanthraquinone molecule make it have a high theoretical energy density as a cathode material for lithium-ion batteries (Xu Guoxiang, Qi Lu, Wen Lei, Liu Guoqiang, Ci Yun Xiang. Poly-1,5-diaminoanthraquinone cathode materials for secondary lithium batteries. Acta Polymerica Sinica. 6 (20...

Examples

Embodiment 1

[0025] (1) Ingredients

[0026] Dissolve 98% sulfuric acid in N,N-dimethylformamide (DMF) to make 100 mL acidic organic solution, the concentration of sulfuric acid is 1.5 molL -1 , and divided into two parts of 50 mL each; then 10 mmol 1,5-diaminoanthraquinone and 0.05 g graphite oxide were added to one part of the DMF acidic solution, ultrasonically dispersed to obtain a purple-brown sol (sol A), and then the oxidant was dissolved in another part of DMF acidic solution, and slowly added dropwise to Sol A to obtain a mixed sol.

[0027] (2) constant temperature reaction

[0028] Seal the mouth of the beaker with plastic wrap to prevent dust from entering the mixed sol obtained in step (1), and let it stand at room temperature for 24 hours to obtain the intermediate product poly-1,5-diaminoanthraquinone-modified graphene oxide nanocomposite powder;

[0029] (3) washing

[0030] The precipitate obtained in step (2) is washed with deionized water and then centrifuged, the cen...

Embodiment 2

[0039] Repeat Example 1, and replace the potassium dichromate in Example 1 with potassium permanganate and hydrochloric acid to obtain poly-1,5-diaminoanthraquinone modified graphene nanocomposite powder.

Embodiment 3、4

[0041] Repeat Example 1, and replace the sulfuric acid in Example 1 with nitric acid and perchloric acid, respectively, to obtain poly-1,5-diaminoanthraquinone-modified graphene nanocomposite powder.

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