石墨烯/二氧化锆纳米复合材料的制备及其防腐性能研究

采用静电吸附与水热法制备一种石墨烯/二氧化锆（rGO/ZrO₂）复合材料，将所制备的rGO/ZrO₂作为填料加入环氧树脂涂料中，得到环氧复合防腐涂料。通过X射线衍射（XRD）、透射电子显微镜（TEM）及红外光谱（FI-IR）分析rGO/ZrO₂的结构及微观形貌，采用电化学阻抗谱（EIS）分析rGO/ZrO₂环氧涂层的防腐性能。结果表明：ZrO₂纳米颗粒均匀分散在rGO上，平均粒径约为5~10 nm；与纯环氧涂层、rGO环氧涂层、ZrO₂环氧涂层相比，rGO/ZrO₂环氧涂层的防腐性能最好，其阻抗值为7.00 GΩ·cm²。

Preparation of a graphene/zirconia nanocomposite and its anticorrosion properties

A graphene/zirconium oxide (rGO/ZrO₂) composite has been prepared by electrostatic adsorption and hydrothermal method. The prepared rGO/ZrO₂ was added as a filler to an epoxy resin coating to obtain an epoxy composite anti-corrosion coating. The microstructure and morphology of rGO/ZrO₂ were analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and infrared spectroscopy (FT-IR). The anti-corrosion properties of the rGO/ZrO₂ epoxy coating were analyzed by electrochemical impedance spectroscopy (EIS). It was found that the interlayer spacing of graphene is about 0.36 nm after adding ZrO₂. The ZrO₂ nanoparticles are evenly dispersed on rGO and the average particle size is 5-10 nm. The anticorrosion performance of the rGO/ZrO₂ epoxy coating is superior to that of the pure epoxy coating, rGO epoxy coating, and the ZrO₂ epoxy coating, with an impedance of 7.00 GΩ·cm².