Preparation method and application of graphene oxide liquid crystal emulsion

Abstract

The invention discloses a preparation method and application of graphene oxide liquid crystal emulsion, and belongs to the technical field of preparation and water treatment of novel carbon material. Oxidation is conducted with natural graphite as a raw material to obtain graphene oxide, carbon black is added, and the graphene oxide liquid crystal emulsion is obtained after emulsification is conducted on the carbon black and vegetable oil. According to the preparation method, graphite oxide serves as a surface active agent, so the stable emulsion is formed by water and oil; D400 serves as a cross-linking agent and a surface active agent, so stability of the emulsion is enhanced; graphite oxide which has dispersity and surface oxygenic functional groups serves as a good carrier for anchoring and dispersing the carbon black difficult to dissolve, and emulsification is conducted on water and oil through ultrasonic waves to form the stable emulsion. When the emulsion is applied to a flowing desalination process, an excellent desalination effect is achieved; the emulsion is expected to be applied in an industrialized mode. The emulsion can be applied to the fields of desalination of brackish water and seawater, water softening, removal of other heavy metal ions and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a graphene oxide liquid crystal emulsion, which belongs to the technical field of capacitive deionization, a branch of water treatment science and technology. Specifically relates to a method for water treatment by preparing emulsion with graphite oxide and vegetable oil as raw materials. Background technique [0002] With the growth of population, economic development and increasing environmental pollution, the demand for fresh water resources is increasing day by day. How to obtain cheap fresh water from seawater and brackish water, which accounts for 98% of the world's total water storage, has attracted widespread attention worldwide. Currently, seawater desalination technologies mainly include distillation, reverse osmosis, and electrodialysis. However, these methods have disadvantages such as high energy consumption and easy generation of secondary pollution. [0003] Capacitiv...

AI Technical Summary

Problems solved by technology

Due to the poor water solubility of traditional carbon materials (activated carbon, carbon black, carbon nanotubes, etc.), they are easily separated from the electrolyte during the flow process, causing deposition and blocking channels, thus affecting the experimental results

On the other hand, the amount of carbon material required to prepare a flowing carbon electrode is relatively large, and capacitive deionization is an interface reaction, and ions in the salt solution are adsorbed on the surface of the material, thereby achieving the purpose of deionizing and purifying water. The pure carbon paste has the disadvantage of low material utilization

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