A novel electrocatalyst, PtNi-graphene/carbon dots/graphene (PtNi/GCG), for methanol oxidation was prepared onto the glassy carbon electrode (GCE). The GCG hybrid nanocarbon support with sandwich-structure was dried onto GCE surface. Then, PtNi bimetallic nanoparticles were modified loaded on the GCG hybrid nanocarbon support via electrodeposition to obtain PtNi/GCG electrocatalyst. The as-prepared PtNi/GCG electrocatalyst was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and electrochemical analysis. The structure of PtNi/GCG shows that the PtNi nanoparticles were dispersed between the layered graphene. From electrochemical analysis, compared with Pt and PtNi/graphene catalysts, the as-prepared PtNi/GCG in this work has much better electrocatalytic properities towards methanol oxidation and shows better stability. The sandwich-structured electrocatalys...

中文翻译：

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PtNi纳米颗粒负载在类似三明治的混合纳米碳载体上，用于甲醇氧化

在玻璃碳电极（GCE）上制备了用于甲醇氧化的新型电催化剂PtN​​i-石墨烯/碳点/石墨烯（PtNi / GCG）。将具有夹心结构的GCG杂化纳米碳载体干燥到GCE表面上。然后，通过电沉积将PtNi双金属纳米粒子改性，使其负载在GCG杂化纳米碳载体上，从而获得PtNi / GCG电催化剂。制备的PtNi / GCG电催化剂的特征在于：透射电子显微镜（TEM），配有能量色散X射线光谱仪（EDS）的扫描电子显微镜（SEM），X射线衍射（XRD）和电化学分析。PtNi / GCG的结构表明PtNi纳米颗粒分散在层状石墨烯之间。根据电化学分析，与Pt和PtNi /石墨烯催化剂相比，这项工作中制备的PtNi / GCG对甲醇氧化具有更好的电催化特性，并显示出更好的稳定性。夹心结构的电催化剂