Oxidized graphene-rhamnolipid composite material and preparation method and application thereof

A technology of rhamnolipid and composite materials, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve the problems of high biological toxicity, poor treatment effect, and low adsorption capacity, and achieve biological Low toxicity, easy solid-liquid separation, large adsorption effect
CN103418348AActive Publication Date: 2013-12-04HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUNAN UNIV
Publication Date
2013-12-04

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Abstract

The invention discloses an oxidized graphene-rhamnolipid composite material which is black gray powder and is of a laminar multi-hole nano structure. The invention further discloses a preparation method of the composite material. The preparation method includes the following steps that oxidized graphene is added into a dispersing agent, and oxidized graphene mixed liquor is formed after ultrasonic dispersion; rhamnolipid, 1-ethyl-(3-dimethyl amino propyl) carbodiimide hydrochloride and 4-dimethylamino pyridine are added into the mixed liquor, then the ultrasonic reaction is performed, and a certain amount of absolute methanol is added and mixed for generating sediments; the sediments are washed and centrifuged, and finally the oxidized graphene-rhamnolipid composite material is prepared through vacuum freeze drying. The invention further relates to application, in aspect of cationic dye absorption, of the composite material prepared through the method. The prepared composite material is low in biological toxicity and not prone to agglomeration, the preparation method is simple and easy to carry out, and in the process of the cationic dye absorption, the prepared composite material has the advantages of being free of secondary pollution and enabling solids and liquids to be separated easily.
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Description

technical field

[0001] The invention belongs to the field of material preparation and environmental protection, and in particular relates to a graphene oxide-rhamnolipid composite material, a preparation method thereof and the application of adsorbing cationic dyes. Background technique

[0002] With the development of the economy, dyes are widely used in textiles, leather, food, paint, ink and rubber and other fields. Therefore, the environmental problems caused by dye wastewater in my country are becoming increasingly prominent. Most dyes have strong chemical stability and biodegradability, so they can exist in water for a long time and cause serious environmental pollution. At present, in order to reduce the pollution of dye wastewater to the environment, methods such as photocatalytic degradation, membrane filtration, flocculation and precipitation, electrochemical technology, and adsorption have been applied to the decolorization of dye wastewater. Adsorption treatment...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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