Preparation method of efficient two-dimensional nano material filtering film

A technology of two-dimensional nanomaterials and thin films, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of high cost, long functionalization time and low efficiency of two-dimensional nanomaterials, and achieve simple equipment. , The film thickness is easy to control and the effect is less time-consuming

CN113274893APending Publication Date: 2021-08-20江苏城乡建设职业学院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-08-20

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Abstract

The invention belongs to the field of filter materials, and provides a preparation method of an efficient two-dimensional nano material and cellulose nanocrystal composite filtering film, which comprises the following steps of putting hexagonal boron nitride, graphite, molybdenum disulfide, glucose and grinding balls into a grinding tank for ball milling to obtain mixed powder of boron nitride nanosheets, graphene, molybdenum disulfide nanosheets and glucose, carrying out ultrasonic treatment on the mixed powder in deionized water to form a suspension, and carrying out suction filtration and washing to obtain mixed powder of boron nitride nanosheets, graphene and molybdenum disulfide nanosheets, carrying out ultrasonic treatment on the mixed powder in deionized water to form a suspension, and centrifuging to remove more layers of nanosheets to obtain mixed powder of few-layer boron nitride nanosheets, graphene and molybdenum disulfide nanosheets, adding a proper proportion of cellulose nanocrystals into the mixed powder, carrying out ultrasonic treatment in deionized water to form a suspension, and carrying out vacuum suction filtration to obtain the filtering film containing the boron nitride nanosheets, the graphene, the molybdenum disulfide nanosheets and the cellulose nanocrystals on the surface of the nylon film.
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Description

technical field

[0001] The invention relates to the technical field of filter membranes, in particular to two-dimensional nanomaterial filter membranes, and in particular to a method for preparing a high-efficiency two-dimensional nanomaterial and cellulose nanocrystal composite filter membrane. Background technique

[0002] With the rapid development of industry, the pollution of industrial wastewater is becoming more and more serious. Among them, industrial dye wastewater has the characteristics of high chroma, complex components, strong toxicity, stable chemical properties, and difficult biochemical degradation, which makes industrial wastewater treatment face great challenges. In order to solve the problem of wastewater treatment, some two-dimensional nanomaterials such as boron nitride nanosheets, graphene and molybdenum disulfide nanosheets have good chemical stability, high strength, high temperature oxidation resistance, large specific surface area, low cost and easy...

Examples

Embodiment 1

[0020] The invention is a method for preparing a high-efficiency two-dimensional nanomaterial filter film, comprising the following steps:

[0021] S1. Put hexagonal boron nitride, graphite, molybdenum disulfide and corundum grinding balls into the corundum ball milling tank. The corundum grinding balls are set to two types, including 150g of corundum grinding balls with a diameter of 10mm and 15g of corundum grinding balls with a diameter of 1mm. , the total weight of hexagonal boron nitride, graphite and molybdenum disulfide is 3g, the average particle size is 5-9μm, and the mass ratio is 1:1:1;

[0022] S2. The corundum ball milling tank is rotated and ball milled under the protection of argon to obtain a mixed powder of boron nitride nanosheets, graphene, molybdenum disulfide nanosheets and glucose. The ball milling speed is 300r / min, and the ball milling time is 6h;

[0023] S3. Weigh 2 g of the mixed powder obtained by ball milling in step S2, put it into 1000 ml of deio...

Embodiment 2

[0030] The invention is a method for preparing a high-efficiency two-dimensional nanomaterial filter film, comprising the following steps:

[0031] S1. Put hexagonal boron nitride, graphite, molybdenum disulfide and corundum grinding balls into the corundum ball milling tank. The corundum grinding balls are set to two types, including 200g of corundum grinding balls with a diameter of 10mm and 20g of corundum grinding balls with a diameter of 1mm. , the total weight of hexagonal boron nitride, graphite and molybdenum disulfide is 4g, the average particle size is 3-8μm, and the mass ratio is 1:1:1;

[0032] S2. The corundum ball milling tank is rotated and milled under the protection of argon to obtain a mixed powder of boron nitride nanosheets, graphene, molybdenum disulfide nanosheets and glucose. The ball milling speed is 200r / min, and the ball milling time is 8h;

[0033] S3. Weigh 1 g of the mixed powder obtained by ball milling in step S2, put it into 800 ml of deionized ...