CoP/CoMoP纳米复合材料的制备及催化析氢性质的研究

Preparation and Hydrogen Evolution Properties of CoP/CoMoP Nanocomposites

分别采用一步和两步水热法制备前驱体,再将前驱体以次磷酸钠热解法进行磷化制备磷化物复合材料。采用X射线衍射仪对样品进行物相表征,以扫描电子显微镜(SEM)对其进行了形貌表征。采用循环扫描伏安法(CV)和线性扫描伏安法(LSV)分别测试制备的磷化物复合材料的析氢性能。实验结果显示,在电催化析氢反应中,相比一步水热法再磷化得到的磷化物复合材料,经过两步水热法后磷化得到的CoP/CoMoP纳米复合材料的析氢性能更优越。

The precursor was prepared by one-step hydrothermal method and two-step hydrothermal method respectively,and then the precursor was phosphated by sodium hypophosphite pyrolysis method to prepare phosphide composites.The phase of the samples was characterized by X-ray diffraction,and the morphology was characterized by scanning electron microscope(SEM).Cyclic scanning voltammetry(CV)and linear scanning voltammetry(LSV)were used to test the hydrogen evolution properties of the phosphide composites.The experimental results showed that in the electrocatalytic hydrogen evolution reaction,compared with the phosphide composite obtained by one-step hydrothermal method,CoP/CoMoP nanocomposite obtained by two-step hydrothermal method had better hydrogen evolution performance.