Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen 518118, China.
Adv Colloid Interface Sci. 2021 Mar;289:102360. doi: 10.1016/j.cis.2021.102360. Epub 2021 Jan 20.
Graphene-based materials have received much attention as attractive candidates for the adsorptive removal of pollutants from water due to their large surface area and diverse active sites for adsorption. The design of graphene-based adsorbents for target pollutants is based on the underlying adsorption mechanisms. Understanding the adsorption performance of graphene-based materials and its correlation to the interaction mechanisms between the pollutants and adsorbents is crucial to the further development of graphene-based functional materials and their practical applications. This review summarizes recent advances on the development of graphene-based materials for the adsorption of heavy metal ions, dyes, and oils, and the co-adsorption of their mixture from water. The material design, performance, regeneration and reuse of adsorbents, and the associated adsorption mechanisms are discussed. Various techniques for mechanistic studies of the adsorption of heavy metal ions, dyes, and oils on graphene-based materials are highlighted. The remaining challenges and perspectives for future development and investigation of graphene-based materials as adsorbents are also presented.
基于石墨烯的材料因其大的表面积和多种吸附活性位点而受到关注，被认为是从水中吸附去除污染物的有吸引力的候选材料。基于石墨烯的吸附剂对目标污染物的设计是基于潜在的吸附机制。了解基于石墨烯的材料的吸附性能及其与污染物和吸附剂之间相互作用机制的相关性，对于进一步开发基于石墨烯的功能材料及其实际应用至关重要。本文综述了近年来基于石墨烯的材料在吸附重金属离子、染料和油，以及从水中混合吸附方面的发展。讨论了吸附剂的材料设计、性能、再生和再利用，以及相关的吸附机制。强调了用于研究基于石墨烯的材料吸附重金属离子、染料和油的各种机制研究技术。还提出了作为吸附剂的基于石墨烯的材料未来发展和研究的剩余挑战和展望。
