New Insights into the Interaction between Graphene Oxide and Beta-Blockers.

Yuehua Deng,Wenjie Nie,Yani Li,Shentan Liu,Dongzhuang Hou,Mingming Chen,Xiaochun Tan,Xiang Gao

doi:10.3390/nano9101429

Abstract

As a nano-adsorbent, magnetic graphene oxide (GO/Fe3O4) was synthesized to potentially adsorb propranolol (PRO) from water. The synthetic material was characterized by SEM, TEM, VSM, FTIR, XRD, zeta potential, and XPS. The environmental factors, such as pH, humic acid concentration, PRO concentration, and contact time, were investigated regarding their effect on the adsorption process. The kinetics data fitted the pseudo first-order and second-order kinetics equations. The Langmuir equation, the Freundlich equation, and the Sips equation were used to analyze the adsorption isotherms. Electrostatic attraction, hydrogen bonding, and the π–π interaction all contributed to the adsorption process of PRO onto GO/Fe3O4. The discovery of this study emphasized the feasibility of GO/Fe3O4 removal of PRO and expanded the scope of the application of GO.

Highlights

Graphene, as a member of the group of carbon materials, has attracted enormous attention from researchers since 2004 due to its excellent mechanical and physicochemical properties [1]
The results showed that the oxygen-containing functional groups on the surface of graphene oxide (GO) can effectively remove atenolol and PRO from water via electrostatic interaction and hydrogen bonding
The results suggested that GO/Fe3O4 can be used in a 1w5iodfe18 range of neutral water

Summary

Introduction

As a member of the group of carbon materials, has attracted enormous attention from researchers since 2004 due to its excellent mechanical and physicochemical properties [1]. Both GO and graphene have two-dimensional, sheet-like structures which are connected by carbon atoms through the hybridization of sp and σ bonds to the surrounding carbon atoms to form a hexagonal honeycomb lattice [2,3,4]. After entering the water body as a parent compound, it cannot be completely removed by the traditional sewage treatment process [11,12]. Kyzas et al studied the removal of PRO and atenolol from water by GO adsorption [17]. The results showed that the oxygen-containing functional groups on the surface of GO can effectively remove atenolol and PRO from water via electrostatic interaction and hydrogen bonding. After the adsorption process completes, it must be separated from the aqueous solution via filtration or centrifugation, which is complicated, time-consuming, and costly

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Results

Conclusion