Preparation method of graphene-based adsorption material

Abstract

The invention discloses a preparation method of a graphene-based adsorption material. The preparation method comprises the steps: first adopting artemisinin medicine as a reducing agent and a protective agent of nano silver to reduce the nano silver, then soaking a single layer of graphene oxide powder in a nano silver aqueous solution, ultrasonically drying, placing under ultraviolet rays to perform irradiation, and repeating the process of extraction, ultrasonic drying and ultraviolet reduction for 3 to 5 times to finally obtain the graphen-based adsorption material. The preparation method adopts artemisinin medicine as the reducing agent and protective agent of the nano silver and has the characteristics of simple process, wide source of raw materials, moderate reaction, environmental friendliness and the like; and the prepared nano silver simultaneously has double effects of antibiosis and anti-malarial. The method adopting ultraviolet to reduce the graphene is environmentally-friendly, high efficient and cheap, so that the use of a toxic reducing agent such as hydrazine or sodium borohydride is avoided. The process of soaking, ultrasonic drying and ultraviolet reduction is repeated for 3 to 5 times, so that the nano silver is uniformly distributed and stably attached on the graphene and is unlikely to fall off. The prepared graphene-based adsorption material has a promising application prospect in the fields of sewage treatment and air purification.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a preparation method of a graphene-based adsorption material. Background technique [0002] With the rapid development of my country's economy and society, the continuous growth of population, the acceleration of industrialization and urbanization, frequent water pollution and air pollution incidents have brought serious damage to the environment and people's health. Therefore, sewage treatment and air purification have become an urgent task. [0003] There are many treatment technologies for polluted water bodies, among which the adsorption method is widely used because of its easy preparation, low cost and good adsorption effect. Commonly used adsorbent materials include polymer adsorbents such as activated carbon and chitosan, microbial adsorbents, and mineral adsorbents. The adsorption performance of activated carbon is easily affected by the size and polarity of adsorbat...

AI Technical Summary

Problems solved by technology

The physical method has high requirements on instruments and equipment, and the production cost is expensive

Chemical methods often use hydrazine hydrate, formaldehyde, polyols, organic amines, etc. as reducing agents. Although these reducing agents have high activity, they are harmful to the environment, and the prepared nano-silver is prone to agglomeration