Abstract Electrophoretic deposition (EPD) of Graphene Oxide (GO) has been used in several applications but in a few studies, the kinetics of the process has been considered. In the present work, the EPD of GO in organic (ethanol) and aqueous (deionized water) solutions was carried out without any additives while in-situ measurement of mass and current density were performed. Furthermore, the resistance of the deposit, voltage drop, and the effective field along suspension during EPD have been studied. These results, alongside current density plots, indicated the reduction of GO on the surface of the anode in deionized water. Comparison of the mass results to the Hamaker model indicates good compatibility in deionized water across lower voltages, yet the differences tend to grow as the voltage is increased. However, in ethanol, parabolic changes in mass, lead to an incompatibility of mass variations and the model. The microstructure and thickness of the coatings were investigated by scanning electron microscopy (SEM) indicated that the maximum thickness of the coatings achieved in the appropriate voltage was about 3 µm. It can be concluded that the type of solution is a critical factor in the EPD of GO which can affect the process and properties of the final coating.

中文翻译：

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氧化石墨烯纳米片在有机溶液和水溶液中的电泳沉积动力学比较

摘要 氧化石墨烯 (GO) 的电泳沉积 (EPD) 已用于多种应用，但在一些研究中，已考虑该过程的动力学。在目前的工作中，GO 在有机（乙醇）和水性（去离子水）溶液中的 EPD 是在没有任何添加剂的情况下进行的，同时进行了质量和电流密度的原位测量。此外，还研究了 EPD 期间沉积物的电阻、电压降和沿悬浮的有效场。这些结果，连同电流密度图，表明去离子水中阳极表面的 GO 减少。质量结果与 Hamaker 模型的比较表明，去离子水在较低电压下具有良好的兼容性，但随着电压的增加，差异趋于扩大。然而，在乙醇中，质量的抛物线变化会导致质量变化与模型不兼容。通过扫描电子显微镜 (SEM) 研究涂层的微观结构和厚度表明，在适当的电压下，涂层的最大厚度约为 3 µm。可以得出结论，溶液的类型是 GO 的 EPD 的关键因素，它会影响最终涂层的工艺和性能。