Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Institute of Chemical Technologies and Analytics, Vienna University of Technology, 1060 Vienna, Austria.
Molecules. 2020 Mar 4;25(5):1148. doi: 10.3390/molecules25051148.
Graphene oxide (GO) is a chemical compound with a form similar to graphene that consists of one-atom-thick two-dimensional layers of sp-bonded carbon. Graphene oxide exhibits high hydrophilicity and dispersibility. Thus, it is difficult to be separated from aqueous solutions. Therefore, functionalization with magnetic nanoparticles is performed in order to prepare a magnetic GO nanocomposite that combines the sufficient adsorption capacity of graphene oxide and the convenience of magnetic separation. Moreover, the magnetic material can be further functionalized with different groups to prevent aggregation and extends its potential application. Until today, a plethora of magnetic GO hybrid materials have been synthesized and successfully employed for the magnetic solid-phase extraction of organic compounds from environmental, agricultural, biological, and food samples. The developed GO nanocomposites exhibit satisfactory stability in aqueous solutions, as well as sufficient surface area. Thus, they are considered as an alternative to conventional sorbents by enriching the analytical toolbox for the analysis of trace organic compounds.
氧化石墨烯（GO）是一种化学化合物，其形态类似于由单层原子厚的 sp 键合碳原子组成的石墨烯。氧化石墨烯具有高亲水性和分散性。因此，很难从水溶液中分离出来。因此，通常通过功能化磁性纳米粒子来制备磁性 GO 纳米复合材料，以结合氧化石墨烯的充分吸附能力和磁性分离的便利性。此外，磁性材料可以进一步功能化不同的基团，以防止团聚并扩展其潜在应用。直到今天，已经合成了大量的磁性 GO 杂化材料，并成功地用于从环境、农业、生物和食品样品中磁性固相萃取有机化合物。所开发的 GO 纳米复合材料在水溶液中表现出令人满意的稳定性，并且具有足够的表面积。因此，它们被认为是传统吸附剂的替代品，通过丰富痕量有机化合物分析的分析工具箱来进行分析。
