School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, People's Republic of China.
School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China.
Environ Technol. 2023 Sep;44(21):3183-3195. doi: 10.1080/09593330.2022.2053754. Epub 2022 Mar 31.
Graphene oxide (GO), an important derivative of graphene, with a variety of active oxygen-containing groups (hydroxyl, carboxyl and epoxy) on its surface is easy to be functionalized to obtain adsorbent with high adsorption capacity. To date, the adsorption behaviour of organic pollutants by functionalized GO adsorbents have been extensively studied, but there has been no systematic review regarding the functionalization method of GO for the purpose to remove organic pollutants from wastewater. The leading objective of this review is to (i) summarize the functionalization strategies of GO for organic pollutants removal (covalent functionalization and non-covalent functionalization), (ii) evaluate the adsorption performance of functional GO towards organic pollutants by taking aromatic pollutants and dyes as examples and (iii) discuss the regeneration property and adsorption mechanism of functional GO adsorbent. In addition, the problems of existing studies and future research directions are also identified briefly.
氧化石墨烯（GO）是石墨烯的重要衍生物，其表面含有多种活性含氧基团（羟基、羧基和环氧基），易于功能化，从而获得具有高吸附容量的吸附剂。迄今为止，已经广泛研究了功能化 GO 吸附剂对有机污染物的吸附行为，但对于为了从废水中去除有机污染物而对 GO 进行功能化的方法，还没有系统的综述。本综述的主要目的是：（i）总结去除有机污染物的 GO 的功能化策略（共价功能化和非共价功能化）；（ii）以芳香族污染物和染料为例，评估功能化 GO 对有机污染物的吸附性能；（iii）讨论功能化 GO 吸附剂的再生性能和吸附机理。此外，还简要地指出了现有研究存在的问题和未来的研究方向。
