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A kind of preparation method of graphene/graphite oxide film with multiple responses

A multi-response and graphene technology, applied in the field of preparation of multi-response materials, can solve the problems of limited performance and application, slow recovery rate, low repetition accuracy, etc., and achieve good mechanical and electrical properties

Inactive Publication Date: 2017-01-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of light-driven deformable materials often has some problems, such as complex polymer orientation process in the preparation process, long photoresponse time (>10s), slow recovery rate, low repeatability (5%-20%), etc. Earth limits its performance and application

Method used

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  • A kind of preparation method of graphene/graphite oxide film with multiple responses
  • A kind of preparation method of graphene/graphite oxide film with multiple responses
  • A kind of preparation method of graphene/graphite oxide film with multiple responses

Examples

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Effect test

Embodiment 1

[0035] Disperse the highly exfoliated graphite oxide in deionized water at a concentration of 1 mg / ml, add sulfuric acid dropwise to adjust the pH to 2, and then ultrasonically disperse to obtain a graphite oxide aqueous solution with good stability. Clean the desired copper plate ultrasonically with an organic solvent (ethanol or acetone) and then dry it and place it at the bottom of the glass vessel (10 cm from the liquid surface) filled with the previously configured graphite oxide aqueous solution. Put the glassware on a horizontal platform for 1 day and keep the temperature at 20°C. Take out the bottom copper plate. At this time, a layer of graphene / graphite oxide hydrogel is deposited on the surface of the copper plate. Put the copper plate in a drying oven at 25°C It was taken out after drying for 6 hours, and then the film was peeled off from the copper plate. figure 2 It is the field emission scanning electron microscope figure of the graphene / graphite oxide film cro...

Embodiment 2

[0039] Disperse the highly exfoliated graphite oxide in deionized water at a concentration of 5 mg / ml, add sulfuric acid dropwise to adjust the pH to 4, and then ultrasonically disperse to obtain a graphite oxide aqueous solution with good stability. Clean the desired copper plate ultrasonically with an organic solvent (ethanol or acetone) and then dry it and place it at the bottom of the glass vessel (10 cm from the liquid surface) filled with the previously configured graphite oxide aqueous solution. Put the glassware on a horizontal platform for 1 day and keep the temperature at 30°C. Take out the bottom copper plate. At this time, a layer of graphene / graphite oxide hydrogel is deposited on the surface of the copper plate. Put the copper plate in a drying oven at 50°C After drying for 2 hours, it was taken out, and then the film was peeled off from the copper plate. The removed film is in a flat state, and it is placed on a water vapor permeable non-woven fabric (hot water ...

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Abstract

The invention relates to a preparation method of a multi-response graphene / graphite oxide film. The method comprises the following steps of: ultrasonically dispersing the graphite oxide in deionized water to obtain a graphite oxide aqueous solution, and then, regulating the pH value to 2-6 by using acid; placing an active metal plate in the graphite oxide aqueous solution, placing the graphite oxide aqueous solution on a horizontal platform and maintaining temperature of 10-15 DEG C, standing, taking out the active metal plate 1-7 days later, washing, drying, and peeling off the film, then, thereby obtaining the multi-response graphene / graphite oxide film. The preparation method provided by the invention is simple, and can implement large-scale and low-cost production.

Description

technical field [0001] The invention belongs to the field of preparation of multiple response materials, in particular to a preparation method of a multiple response graphene / graphite oxide film. Background technique [0002] The stimulus deformable material is a kind of material whose shape will change in different degrees according to the degree of stimulus when it is stimulated by the external environment (such as light, temperature, humidity, etc.). Common actuation mechanisms include electrostatic actuation, piezoelectric actuation, electromagnetic actuation, shape memory alloy actuation, light actuation, and thermal actuation. In recent years, as an artificial intelligence material, it has attracted more and more attention from scientific researchers, especially in the fields of artificial muscles, optical drives and micro-optomechanical systems, which have shown great application prospects. Compared with other actuation methods, light (temperature) actuation has the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04
Inventor 张青红穆九柯王宏志李耀刚
Owner DONGHUA UNIV
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