Ren Guohong, Zhang Xichen, Zhang Zhicheng, Liang Ying, Wu Shishan, Shen Jian
School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Qixia District, Nanjing 210023, China.
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210046, China.
Langmuir. 2020 Mar 17;36(10):2584-2591. doi: 10.1021/acs.langmuir.9b03401. Epub 2020 Mar 4.
Pt-based nanomaterials have been proven to be effective catalysts for direct alcohol fuel cells (DAFCs). Specifically, the ternary nanoalloys (NAs) composed of Pt with other noble metals and transition metals can not only reduce the component of Pt but also enhance the electrocatalytic property and durability for alcohol oxidation. Herein, ternary PdPtCu NAs were synthesized through the solvothermal method using ethylene glycol as the solvent and reducing agent. The morphology and composition of PdPtCu NAs can be effectively controlled via selecting suitable surfactants and adjusting the proportion of precursors. The three-dimensional (3D) PdPtCu NAs with spiny rambutan-like morphology were obtained using the triblock copolymer Pluronic F-127 (PF-127) as the surfactant and adding three precursors with an equal molar ratio. The unique structure of PdPtCu NAs and the synergistic effect between the components significantly improved the electrocatalytic activity toward ethanol oxidation. Compared with different atomic ratio binary or ternary nanomaterials, 3D PdPtCu NAs manifested the best electrocatalytic performance.
基于铂的纳米材料已被证明是直接醇类燃料电池（DAFCs）的有效催化剂。具体而言，由铂与其他贵金属和过渡金属组成的三元纳米合金（NAs）不仅可以减少铂的用量，还能增强醇氧化的电催化性能和耐久性。在此，以乙二醇作为溶剂和还原剂，通过溶剂热法合成了三元PdPtCu纳米合金。通过选择合适的表面活性剂和调整前驱体的比例，可以有效控制PdPtCu纳米合金的形态和组成。以三嵌段共聚物Pluronic F-127（PF-127）作为表面活性剂，并加入等摩尔比的三种前驱体，获得了具有刺状红毛丹样形态的三维（3D）PdPtCu纳米合金。PdPtCu纳米合金的独特结构以及各组分之间的协同效应显著提高了对乙醇氧化的电催化活性。与不同原子比的二元或三元纳米材料相比，3D PdPtCu纳米合金表现出最佳的电催化性能。
