利用脱合金的方法制备了纳米多孔铂镍钼(NP-PtNiMo)合金纳米催化剂,通过扫描电子显微镜(SEM)、能量色散X射线光谱仪(EDX)、X射线衍射仪(XRD)和电化学测试的方法对 NP-PtNiMo 合金纳米催化剂的表面形貌、成分、物相和电催化性能进行了表征。运用循环伏安法(CV)和恒电位极化评价了 NP-PtNiMo 合金纳米催化剂在室温下对甲醇的电催化氧化性能。结果表明,NP-PtNiMo 合金纳米催化剂比商业 Pt/C 催化剂具有更好的电催化氧化甲醇的性能,更好的电催化稳定性以及更好的抗CO 中毒的能力。
NP-PtNiMo catalysts were fabricated by dealloying method in present study.The surface morpholo-gy,composition,phase constitutions,and electrocatalytic properties were characterized by scanning electron microscopy (SEM),energy dispersive X-ray spectroscopy (EDX),X-ray diffraction (XRD),and electrochemi-cal measurements,respectively.The electrocatalytic activity of the NP-PtNiMo for methanol electrooxidaion was evaluated characterized by the cyclic voltrametry and chronoamperometry at room temperature.Compared to commercial Pt/C,NP-PtNiMo electrocatalysts exhibit better electrocatalytic performance,better electrocata-lytic stability,and more tolerant to CO poisoning.
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