Graphite-like material is widely used for preparing various electrodes for wastewater treatment. To enhance the electrochemical degradation efficiency of Nano-graphite (Nano-G) anode, RuO₂-TiO₂/Nano-G composite anode was prepared through the sol-gel method and hot-press technology. RuO₂-TiO₂/Nano-G composite was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and N₂ adsorption-desorption. Results showed that RuO₂, TiO₂ and Nano-G were composited successfully, and RuO₂ and TiO₂ nanoparticles were distributed uniformly on the surface of Nano-G sheet. Specific surface area of RuO₂-TiO₂/Nano-G composite was higher than that of TiO₂/Nano-G composite and Nano-G. Electrochemical performances of RuO₂-TiO₂/Nano-G anode were investigated by cyclic voltammetry, electrochemical impedance spectroscopy. RuO₂-TiO₂/Nano-G anode was applied to electrochemical degradation of ceftriaxone. The generation of hydroxyl radical (•OH) was measured. Results demonstrated that RuO₂-TiO₂/Nano-G anode displayed enhanced electrochemical degradation efficiency towards ceftriaxone and yield of •OH, which is derived from the synergetic effect between RuO₂, TiO₂ and Nano-G, which enhance the specific surface area, improve the electrochemical oxidation activity and lower the charge transfer resistance. Besides, the possible degradation intermediates and pathways of ceftriaxone sodium were identified. This study may provide a viable and promising prospect for RuO₂-TiO₂/Nano-G anode towards effective electrochemical degradation of antibiotics from wastewater.

石墨状材料被广泛用于制备用于废水处理的各种电极。为了提高纳米石墨（Nano-G）阳极的电化学降解效率，通过溶胶-凝胶法和热压技术制备了RuO ₂ -TiO ₂ / Nano-G复合阳极。通过X射线衍射，X射线光电子能谱，透射电子显微镜和N ₂吸附-脱附对RuO ₂ -TiO ₂ / Nano-G复合材料进行了表征。结果表明，RuO ₂，TiO ₂和Nano-G复合成功，RuO ₂和TiO ₂纳米颗粒均匀地分布在纳米G片的表面上。RuO ₂ -TiO ₂ / Nano-G复合材料的比表面积高于TiO ₂ / Nano-G复合材料和Nano-G的比表面积。通过循环伏安法，电化学阻抗谱研究了RuO ₂ -TiO ₂ / Nano-G阳极的电化学性能。将RuO ₂ -TiO ₂ / Nano-G阳极用于头孢曲松的电化学降解。测量了羟基自由基（•OH）的产生。结果表明，RuO ₂ -TiO ₂/ Nano-G阳极表现出提高的对头孢曲松的电化学降解效率和•OH的产率，这是由于RuO ₂，TiO ₂和Nano-G之间的协同作用而产生的，从而增加了比表面积，提高了电化学氧化活性并降低电荷转移电阻。此外，还确定了头孢曲松钠的可能降解中间体和途径。这项研究可能为RuO ₂ -TiO ₂ / Nano-G阳极有效地电化学降解废水中的抗生素提供可行的和有希望的前景。