Atrazine adsorption by graphene-based materials: Interaction mechanism and application in real samples

• DOI: 10.1016/j.eti.2022.102823
• Publication Date: 2022-07-17T00:23:03Z
• Authors: Caihong Cheng; Xuejuan Shi; Gengwen Yin; Fei Peng; Wenlong Hou; Weiguo Zhang; Xiaohu Lin; Jun Li; Xiuping Wang
• Keywords: Langmuir adsorption model

The wide use of atrazine (ATZ) as a triazine herbicide poses serious threats to the environment and human health. Therefore, it is particularly necessary develop some effective methods for removal ATZ from environment. Here, we studied aqueous solutions by three graphene-based materials (GBMs), including graphene oxide (GO), reduced (rGO) nanoplatelets (GNP). results revealed that all GBMs had extremely high adsorption capacity, which followed order rGO (1083.94 mg/g) > GO (1011.94 GNP (1005.77 mg/g), they were also confirmed be applicable actual samples. was well fitted Elovich kinetic model with determination coefficient (R2) 0.985, 0.998 0.993 GO, GNP, respectively. Moreover, isotherm data Langmuir, Freundlich, Temkin, Dubinin–Radushkevich Sips models. process best fit model. fitting kinetics demonstrated multi-mechanism process. In addition, interaction mechanism adsorbents investigated density functional theory (DFT), visual illustration driven synergistically H-bonding π−π conjugation interactions. developed are convenience feasibility, have great application potential in other pesticides