铂铜合金纳米线的制备及其对乙二醇电催化性能的研究
首发时间:2019-05-13
摘要:催化剂的形貌、结构、成分以及表面状态对其性能有很大影响,通过在铂催化剂中添加一种或多种金属形成二元或多元合金可以促进杂原子相互作用,提高电催化性能。本文在不添加表面活性剂的前提下,采用化学共还原法成功制备出成分可控的Pt-Cu合金纳米线。利用TEM、XRD、EDS等仪器分别对其形貌、结构、成分进行了表征,并将该催化剂应用于电催化乙二醇氧化。通过循环伏安、计时电流法对其电催化性能进行了研究,其中Pt33Cu67表现出最优异的电化学活性和稳定性,电流密度达3.1 Amg-1Pt,是商业Pt/C的3倍。独特的结构以及双官能团的相互作用大大提高了电催化性能,是乙二醇氧化的一个非常理想的催化剂。
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Research on the synthesis of PtCu alloy nanowires and the electrocatalytic performance for ethylene glygol
Abstract:(10 Points, Times New Roman) Researches have shown that the morphology, structure, composition and surface state of the catalyst have great influence on its performance. By adding one or more kind of metals into Pt catalyst to form a binary or multi-component alloy, the electrocatalytic activity and stability can be enhanced via heteroatom interactions. In this dissertation, binary Pt-Cu alloy nanowires were successfully prepared by chemical co-reduction method. The morphology, structure and composition of the Pt-Cualloys were characterized by the multiple detection techniques, such as TEM, XRD, EDS. The electrocatalytic properties of Pt-Cu alloys were studied by electrochemical test method. Pt33Cu67 exhibits the best electrocatalytic performance and stability with a mass current density reaching to 3.1 Amg-1Pt, which is 3 times higher than that of commercial Pt/C. The unique structures and bifunctional interaction greatly enhance the electrocatalytic performance. This is an ideal catalyst for the oxidation of ethylene glycol.
Keywords: Pt-Cu Nanowire Alloy Ethylene glygol Electrocatalysis
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