Graphene loaded nano ZnO/Ag composite material and preparation method thereof

Abstract

The invention relates to a graphene loaded nano ZnO / Ag composite material and a preparation method thereof. A technical scheme is characterized in that the preparation method comprises the steps of mixing Zn powder, an AgNO3 aqueous solution and a graphene oxide solution according to the mass ratio of the solid content being (1.2 to 6) : (0.06 to 3): 1, stirring under room temperature, performing ultrasound, stirring again until the mixed solution is uniformly mixed; putting the obtained mixed solution into a reaction still, performing hydrothermal reaction at 130 to 200 DEG C for 1 to 6h; taking out the mixed solution and cooling, then filtering, centrifuging, and performing solid-liquid separation, performing drying treatment, then a precursor of the graphene loaded nano ZnO / Ag composite material; performing calcining treatment on the obtained precursor, so as to obtain the graphene loaded nano ZnO / Ag composite material. According to the graphene loaded nano ZnO / Ag composite material and the preparation thereof, the operation is simple, the process is easily controlled, the prepared composite material is stable in structure, the particle size is uniform, the antimicrobial activity is good, superior performances on the aspects such as removal of indoor formaldehyde, anti-mildew and degradation of organic pollutant are achieved.

Description

technical field [0001] The invention relates to a graphene-supported nano ZnO / Ag composite material and a preparation method thereof, belonging to the field of composite materials. Background technique [0002] In the field of material science, composite materials complement each other in performance and produce synergistic effects, showing great application prospects in many fields such as industry and biomedicine. Studies have found that both silver nanoparticles and zinc oxide nanoparticles have good antibacterial activity, but the preparation of silver nanoparticles is expensive and the cost is high. Nano-ZnO micropowder has superior antibacterial, disinfection, deodorizing functions and adsorption properties, but as a semiconductor material, ZnO has poor electrical conductivity, and the probability of recombination of photogenerated electrons and holes is high, which affects the antibacterial catalytic effect. Graphene is a two-dimensional carbon atom crystal with a si...

AI Technical Summary

Problems solved by technology

[0004] In the above disclosed technical solutions, graphene composite technology mainly focuses on graphene composite single material. Although the antibacterial activity is better, or the adsorption efficiency of ZnO is improved, the performance is single and the application field is narrow.