A Review on Fabrication and Use of Graphene as Adsorbent in Dye-Containing Industrial Wastewater Treatment

Today’s, discharge of toxic industrial effluents into the environment is one of the major problems of societies. Recently, graphene as member of carbon allotropes have attracted researcher's attention to color removal due to high surface area. Graphene is a monolayer of sp2-hybridized carbon atoms arranged in a two dimensional lattice. Dyes contain aromatic rings in their chemical structure that can be adsorbed well by grapheme through the π- π interactions. Several researches have been investigated on the use of dispersed graphene nanosheets as an efficient adsorbent for removal of dyes. The results indicated graphene can adsorb dyes very well but their performance has been limited by extend of dispersion. Now, the high cost of production is the major obstacles to its industrial using. In this paper, the commonly used methods for the synthesis of graphene and its application in the removal of color compounds from industrial wastewater have been reviewed.