Graphene oxide composites for dye removal in textile, printing and dyeing wastewaters: a review
摘要
The textile, printing and dyeing industries are producing wastewater containing hazardous dye contaminants, which require advanced remediation methods to avoid environmental pollution. Here we review graphene oxide-based materials for the removal of dye contaminants in waters and wastewater, with focus on the properties of graphene oxide, adsorption mechanisms, factors controlling the adsorption, and applications. Dye adsorption is controlled by temperature, adsorbent and dye concentrations, and adsorption time. Graphene oxide composites include membranes and aerogels. Graphene oxide displays suitable hydrophilicity, acid‐alkali resistance, and strong adsorption capabilities. Increasing the surface activity and specific surface area of graphene oxide promotes the adsorption of graphene oxide on textile wastewater and dyeing wastewater.