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A kind of preparation method of reduced graphene oxide-polydopamine-glutathione composite material

A polydopamine and glutathione technology, applied in the field of composite materials, can solve problems such as narrow application

Active Publication Date: 2021-12-14
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a single reduced graphene oxide makes its application relatively narrow, so the synthesis of composite materials based on reduced petrified graphene has better performance and application

Method used

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  • A kind of preparation method of reduced graphene oxide-polydopamine-glutathione composite material
  • A kind of preparation method of reduced graphene oxide-polydopamine-glutathione composite material

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Experimental program
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Embodiment 1

[0021] (1) Preparation of graphite oxide: the first step of pre-oxidation process: 1.25gK 2 S 2 o 8 and 1.25gP 2 o 5 Add to 12.5mL concentrated H at one time 2 SO 4 Then add 1g of graphite powder, heat the mixed solution to 80°C, and heat to reflux for 5h under magnetic stirring. After cooling, add 200mL water to the solution to dilute, then filter, wash neutral, and vacuum at 60°C Set aside to dry. The second step is further oxidation process: Weigh 1g of the above-mentioned dried graphite oxide, and disperse it in 120mL of mixed acid of concentrated sulfuric acid and phosphoric acid (the volume ratio of concentrated sulfuric acid and phosphoric acid is 3:1) under ice bath conditions, and keep the temperature at 0 ~5°C and 9g of potassium permanganate was added under constant stirring, then the temperature was raised to 50°C and stirred for 12h. Cool the system temperature to room temperature, add 200mL of ice water and 5mL of 30% hydrogen peroxide respectively, and ke...

Embodiment 2

[0027] (1) Preparation of graphite oxide: same as Example 1;

[0028] (2) Preparation of reduced graphene oxide-polydopamine: Disperse 100mg of graphite oxide in 50mL of deionized water (concentration 2mg / ml), and sonicate to form a uniform suspension; then dissolve 50mg of dopamine hydrochloride in 150mL of Tris-HCl (pH=8.5) buffer solution, then add it to the suspension of graphite oxide, stir vigorously at 60°C~65°C for 24h, let it stand for 30~40min, separate, wash with water, and dry to obtain reduced graphite oxide ene-polydopamine composites;

[0029](3) Preparation of reduced graphene oxide-polydopamine-glutathione: Dissolve 30 mg of reduced graphene oxide-polydopamine in 30 mL of Tris-Hcl (pH=8.5) buffer solution, and sonicate for 5-6 hours ;Add 60mg of glutathione to the reduced graphene oxide-polydopamine solution, then add a small amount (13.5mg) of manganese dioxide, and stir and react at 40°C~50°C for 24 hours; after the reaction is completed, filter and freeze ...

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Abstract

The invention provides a method for preparing a reduced graphene oxide-polydopamine-glutathione composite material, which comprises ultrasonically dispersing graphite oxide in deionized water to form a uniform suspension; dissolving dopamine hydrochloride in pH=8.5 Tris-Hcl buffer solution, then added to the graphite oxide suspension, then stirred at 60°C~65°C for 22~24h, left to stand, separated, washed with water, and dried to obtain the reduced graphene oxide-polydopamine composite material; continue to reduce the oxidation Graphene-polydopamine is dissolved in Tris-Hcl buffer solution with pH=8.5, ultrasonicated for 5~6h; glutathione and manganese dioxide are added, reacted at room temperature for 22~24h, filtered, and dried to obtain black solid reduced graphite oxide ene-polydopamine-glutathione. The test results of electrochemical properties show that the reduced graphene oxide-polydopamine-glutathione composite material prepared by the present invention has excellent electrical properties.

Description

technical field [0001] The invention relates to a preparation method of a reduced graphene oxide-polydopamine-glutathione composite material with excellent performance, and belongs to the technical field of composite materials. Background technique [0002] Reduced graphene oxide is composed of carbon atoms with sp 2 A new type of two-dimensional atomic crystal composed of carbon monoatomic layers connected by hybridization. Its basic structural unit is the most stable benzene six-membered ring in organic materials. It is currently the thinnest two-dimensional nanomaterial with a thickness of only 0.35nm. Reduced graphene oxide has unparalleled high electron mobility, and the electron mobility rate in graphene molecules can reach 15000cm 2. V -1. the s -1 , while the mobility of silicon is only 1400cm 2. V -1. the s -1 . However, a single reduced graphene oxide makes its application relatively narrow, so the synthesis of composite materials based on reduced petrified ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/04C08G73/06C08K3/04
Inventor 莫尊理杨星牛小慧赵盼刘振宇郭瑞斌刘妮娟
Owner NORTHWEST NORMAL UNIVERSITY