Preparation of Graphene Oxide-Molecular Sieve Composite Adsorbent and its Adsorption Performance for Heavy Metals in Water

Abstract

Graphene has inherent physical and chemical properties, but there are few reactive sites on the surface of graphene, and its use is limited. In the field of water treatment, especially in the adsorption treatment of heavy metals, it has shown great advantages and good development prospects. Dye wastewater is one of the more difficult industrial wastewaters to treat. Among various processes for removing dye wastewater, adsorption technology is considered to be the most promising method of water purification due to its fast, efficient, and low energy consumption characteristics. Molecular sieves have the characteristics of good adsorption selectivity, stable structure, easy regeneration, low price, and environmental protection. They are widely used as adsorbents. However, the adsorption efficiency of a single molecular sieve on organics is also low. In recent years, molecular sieve composite adsorption materials have begun to enter our field of vision. Hydrothermal treatment technology simply and quickly prepared composite materials with different graphene oxide content through chemical action, and studied the synergistic effect between the two composites on the adsorption performance of pollutants.