Graphene and graphene-based nanocomposites used for antibiotics removal in water treatment: A review

• Published in: Chemosphere (Oxford) Vol. 226; pp. 360 - 380
• Main Authors: Li, Mei-fang, Liu, Yun-guo, Zeng, Guang-ming, Liu, Ni, Liu, Shao-bo
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01-07-2019
• Subjects: Adsorption; Antibiotics; Graphene-based nanocomposites; Mechanism; Photodegradation; Photodegradation; Adsorption; Antibiotics; Graphene-based nanocomposites; Mechanism
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/j.chemosphere.2019.03.117

Due to their extensive application in human and veterinary medicine, antibiotics have been found worldwide and studied as new pollutants in the aquatic environment. In order to remove such pollutants, adsorption and photocatalysis have attracted tremendous attention because of their great potential in antibiotics removal from aqueous solutions. Graphene, as a novel two-dimensional nanomaterial, possesses unique structure and physicochemical properties, which can be used to efficiently adsorb and photodegrade antibiotics. This review provides an overview of the adsorptive and catalytic properties of graphene, and recent advances in adsorption and photodegradation of antibiotics by graphene and its derivatives. The factors that affect the adsorption and photodegradation of antibiotics are reviewed and discussed. Furthermore, the underlying mechanisms of adsorption and photodegradation are summarized and analyzed. Meanwhile, statistical analysis is conducted based on the number of papers and the maximum adsorption and photodegradation ability on various antibiotics removal. Finally, some unsolved problems together with major challenges that exist in the fabrication and application of graphene-based nanocomposites and the development for antibiotics removal is also proposed. This work provides theoretical guidance for subsequent research in the field of adsorption and photocatalytic removal of antibiotics from aqueous solution, especially on influence factors and mechanisms aspects.
•Recent studies on antibiotics removal from water by adsorption and photocatalysis.•Graphene and its derivatives as adsorbents and photocatalysts are reviewed.•Graphene properties and circumambient conditions influence the antibiotics removal.•The mechanisms of antibiotics removal via adsorption/photocatalysis are discussed.•Challenges and outlook are proposed to realize practical application.