Abstract: A bis Schiff base ligands was synthesized using 2-hydroxy benzaldehyde and ethylenediamine. With schlenk technique and nitrogen protecting conditions, anhydrous cobalt chloride was reacted with the ligands in a 1∶1 molar ratio to form a mononuclear cobalt (II) Schiff base complex used for electrically driven catalytic water oxidation. After purified, the complex was characterized using nuclear magnetic resonance, infrared spectroscopy and high resolution mass spectrometry. And the electrochemical performance of the catalytic oxidation of water was investigated by cyclic voltammetry using electrochemical workstation. The result indicated that the catalyst has an active electrically driven water oxidation catalytic activity under the condition of neutral pH, and the initial oxygen release potential of the oxidation peak is only 0.5 V. The multiple consecutive scan results of the CVs showed that there was no new redox reaction in the process of water oxidation.Therefore the catalytic system was with good stability. Combined with the low synthesis cost and the difficulty of synthesis and purification, the complex is considered to have good research value and application prospect in the field of catalytic water oxidation.

Key words: Catalytic water oxidation,    , Schiff base,    , Mononuclear,    , Cobalt

摘要：         利用2-羟基苯甲醛、乙二胺合成了双席夫碱配体,然后在无水无氧、氮气保护的条件下使其与无水氯化钴按照物质的量比1∶1反应,得到了一种可用于电驱动催化水氧化反应的单核钴基(Ⅱ)席夫碱类配合物。纯化后以核磁共振、红外光谱、高分辨质谱等检测手段对其结构进行表征,并利用电化学工作站以循环伏安法对其催化水氧化的电化学性能进行考察。结果表明,在中性pH 条件下,该催化剂具有活跃的电驱动水氧化催化活性,氧化峰的起始放氧电位仅为0.5V。循环伏安法连续多次的扫描结果显示,该催化体系在水氧化反应过程中没有新的氧化还原反应发生,因此具有较好的稳定性。结合较低的合成成本及纯化难度,该配合物在催化水氧化领域将具有较好的研究价值和应用前景。

关键词: 催化水氧化,   ,  席夫碱,   ,  单核,   ,  钴