Graphene oxide (GO) is an amphiphilic, water dispersible, chemical derivative of graphene. Widely used as a pathway to obtain graphene, it also has a number of interesting applications by itself due to its ability to form covalently and non-covalently bonded organic–inorganic hybrids and polymer composites. Thus, GO-based composites are used in numerous applications in membrane and coating technologies. It is important that due to the presence of functional acidic groups, GO possesses tunable physicochemical properties like a negatively charged polyelectrolyte and can be used as stimuli responsive membranes, membranes that can interact with environment and switch their properties on demand. Thus, ionic/molecular separation, water purification, selective sensing, and stimuli responsive properties have already been demonstrated in the laboratory. Good mechanical strength and conductivity (in its partially reduced form) make it attractive for the construction of the membranes for energy devices and sensors. However, concentration and distribution of the functional groups on GO molecules is difficult to control. It makes GO materials difficult to standardize, produce, and apply in industry. To this end, it is important to highlight recent achievement in the synthesis of GO as well as in design of GO-based energy devices, corrosion inhibiting coatings, and biomedical devices with improved working performances to evoke interest on mass production of GO with improved formulation.

中文翻译：

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氧化石墨烯膜技术及应用

氧化石墨烯 (GO) 是石墨烯的两亲性、水分散性化学衍生物。广泛用作获得石墨烯的途径，它本身也具有许多有趣的应用，因为它能够形成共价和非共价键合的有机-无机杂化物和聚合物复合材料。因此，基于 GO 的复合材料被用于膜和涂层技术的众多应用中。重要的是，由于功能性酸性基团的存在，GO 具有可调节的物理化学性质，如带负电荷的聚电解质，可用作刺激响应膜，即可以与环境相互作用并根据需要改变其性质的膜。因此，离子/分子分离、水净化、选择性传感和刺激响应特性已经在实验室中得到证明。良好的机械强度和导电性（部分还原形式）使其对构建用于能源设备和传感器的膜具有吸引力。然而，GO分子上官能团的浓度和分布难以控制。这使得 GO 材料难以标准化、生产和工业应用。为此，重要的是要强调最近在 GO 的合成以及设计基于 GO 的能源设备、腐蚀抑制涂层和具有改进工作性能的生物医学设备方面的成就，以引起人们对改进配方的 GO 大规模生产的兴趣。 . GO分子上官能团的浓度和分布难以控制。这使得 GO 材料难以标准化、生产和工业应用。为此，重要的是要强调最近在 GO 的合成以及设计基于 GO 的能源设备、腐蚀抑制涂层和具有改进工作性能的生物医学设备方面的成就，以引起人们对改进配方的 GO 大规模生产的兴趣。 . GO分子上官能团的浓度和分布难以控制。这使得 GO 材料难以标准化、生产和工业应用。为此，重要的是要强调最近在 GO 的合成以及设计基于 GO 的能源设备、腐蚀抑制涂层和具有改进工作性能的生物医学设备方面的成就，以引起人们对改进配方的 GO 大规模生产的兴趣。 .