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A device and method for separating two-dimensional nanomaterials by continuous hypergravity diafiltration

A two-dimensional nanomaterial and two-dimensional material technology, applied in the field of continuous hypergravity percolation separation of two-dimensional nanomaterials, can solve the problems of high energy consumption, inability to achieve high-quality large-scale production, and slow separation rate, etc., to achieve The effects of large pore void ratio, small liquid flow resistance, and wide pore distribution

Active Publication Date: 2021-01-15
ZHEJIANG OCEAN UNIV
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Problems solved by technology

[0004] In order to overcome the problems of high energy consumption, extremely slow separation rate and inability to realize high-quality large-scale production in the traditional two-dimensional nanomaterial stripping method, the present invention provides a simple structure, convenient operation, and the ability to realize the separation of two-dimensional nanosheets with few layers. A device for separating two-dimensional nanomaterials by continuous high-gravity diafiltration for rapid separation between solvents

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  • A device and method for separating two-dimensional nanomaterials by continuous hypergravity diafiltration
  • A device and method for separating two-dimensional nanomaterials by continuous hypergravity diafiltration

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Embodiment Construction

[0037] The technical solutions of the present invention will be further specifically described below through specific embodiments and in conjunction with the accompanying drawings.

[0038] In the present invention, unless otherwise specified, all equipment and raw materials can be purchased from the market or commonly used in this industry. The methods in the following examples, unless otherwise specified, are conventional methods in this field.

[0039] The process of exfoliating and preparing few-layer graphene materials is illustrated as a specific example. Isopropanol aqueous solution (English abbreviation: IPA) is used as the exfoliating agent. The specific gravity of the solution is 0.95 to 0.96 g / mL. .

[0040] The specific operation steps are as follows: the graphite concentration in the graphite slurry flowing out of the continuous stripping device is 0.8%, the concentration of the few-layer graphene contained in it fluctuates between 0.01 mg / mL and 0.02 mg / mL, and t...

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Abstract

The invention relates to the fields of chemical engineering and technologies, and especially relates to a device and a method for separating a two-dimensional nanomaterial by continuous hypergravity percolation. The device comprises a rotor, a stator and a rotary percolating bed, and the rotary percolating bed is fixed in the center position of the inner chamber of the rotor, and is rotatably connected with the stator; a rotary packed bed is arranged in the rotary percolating bed, and the rotary packed bed is filled with two-dimensional material bulk phase particles; the outer wall of the rotary percolating bed is provided with a plurality of percolating holes; a plurality of channels are symmetrically arranged at positions, having the same distance to the axle center, of the bottom of therotary percolating bed; a feed inlet is arranged at the upper end of the rotary percolating bed along the central axis, the feed inlet is connected with a spraying device penetrating through the central axis of the rotary percolating bed, and the outer wall of the spraying device is provided with a plurality of spray holes; and the stator is provided with an upper discharging port and a lower discharging port. The continuous hypergravity rotary percolating bed device can realize rapid separation of a small amount of two-dimensional nano-sheets and a stripping solvent in a clarified liquid flowing out of a continuous hypergravity centrifuge.

Description

technical field [0001] The invention relates to the field of chemical engineering and technology, in particular to a device and method for separating two-dimensional nanomaterials by continuous hypergravity percolation. Background technique [0002] The supergravity technology was produced in the early 1980s. The supergravity field has the characteristics of significantly strengthening the momentum, mass and heat transfer in the chemical process. Under the normal gravity field conditions of the earth, we usually use the centrifugal force to form the supergravity field. Two-dimensional nanomaterials have attracted extensive attention due to their unique properties, and the research on related preparation and application has shown a blowout development in recent years. The excellent properties of these materials make them exhibit great application potential in energy storage, adsorption, catalysis, and optoelectronics. Taking graphene as an example, single-layer graphene has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D24/32B01D24/40B01D24/46B01D36/02B01D15/10B01D15/14B01D15/42C01B32/19
CPCB01D15/10B01D15/14B01D15/424B01D24/32B01D24/40B01D24/46B01D24/4673B01D36/02C01B32/19
Inventor 王东光文建军王玉华葛志强竺柏康
Owner ZHEJIANG OCEAN UNIV
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