Skip to Main content Skip to Navigation
Journal articles

In-situ desorption of acetaminophen from the surface of graphene oxide driven by an electric field: A study by molecular dynamics simulation

Abstract : In the present study, molecular dynamics (MD) simulation was performed to study the effect of electric field on the adsorption characteristics of acetaminophen (APAP) on graphene oxide (GO) under alkaline conditions by calculating and analyzing the structural and energy parameters of a ternary system containing GO, APAP and water molecules. Our simulations result shows that when there is no electric field, the adsorption of APAP on the GO surface is mainly due to the Van de Waals interaction. When the external electric field exists, it can significantly weaken the interaction energy between GO and APAP, destroy the hydrogen bond, and reduce the hydration energy barrier during the escape of APAP from the GO surface, thereby making APAP can desorb from the GO surface more easily. In addition, the applied electric field can change the hydrophobicity on both sides of GO, which means the hydrophobicity and hydrophilicity of both sides of the GO can be switched by changing the direction and strength of the electric field. Our research results are expected to propose a novel GO regeneration method and provide a new perspective to explore the mechanism.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-03273815
Contributor : Suzette Astruc <>
Submitted on : Tuesday, June 29, 2021 - 3:28:18 PM
Last modification on : Tuesday, September 7, 2021 - 3:44:15 PM

Identifiers

Collections

Citation

Yong Han, Shuren Ma, Jun Ma, Pascal Guiraud, Xiaoqiang Guo, et al.. In-situ desorption of acetaminophen from the surface of graphene oxide driven by an electric field: A study by molecular dynamics simulation. Chemical Engineering Journal, Elsevier, 2021, 418, ⟨10.1016/j.cej.2021.129391⟩. ⟨hal-03273815⟩

Share

Metrics

Record views

35