纳米多孔PtFe和PtFeCu催化剂的制备及其对小分子物质催化性能研究  

Preparation of nanoporous PtFe and PtFeCu catalysts and their catalytic properties for small molecules

作　　者：王雪涛 孙俊哲 王甜甜 王长通 WANG Xuetao;SUN Junzhe;WANG Tiantian;WANG Changtong(School of Materials and Chemical Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China;Editorial Department of the Journal,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院材料与化工学院,河南郑州450007 [2]中原工学院学报编辑部,河南郑州450007

出　　处：《中原工学院学报》2022年第6期19-25,共7页Journal of Zhongyuan University of Technology

基　　金：国家自然科学基金项目(51701244)。

摘　　要：通过快速凝固法制备Al_(98)Fe_(1)Pt_(1)和Al_(97)Fe_(1)Cu_(1)Pt_(1)前驱体合金条带,利用两步去合金化法对其处理最终获得具有不同结构的纳米多孔PtFe和纳米多孔PtFeCu合金。利用扫描电镜(SEM)和透射电镜(TEM)对去合金化后的样品进行表征分析,发现其存在双连续的韧带-通道结构,该结构能够为小分子物质的传输提供通道,增大接触面积。电化学测试结果表明,与商用Pt/C相比,纳米多孔PtFe和PtFeCu合金对甲醇、乙醇、甲酸的氧化反应均表现出更优异的电催化活性,且具有更好的稳定性。The Al_(98)Fe_(1)Pt_(1) and Al_(97)Fe_(1)Cu_(1)Pt_(1) precursor alloys ribbons were prepared by the rapid solidification method,and nanoporous PtFe and PtFeCu alloys were obtained after the two-step dealloying method.The ligament-channel bicontinuous structure of nanoporous PtFe and PtFeCu catalysts were characterized by scanning electron microscopy(SEM)and transmission electron microscopy(TEM),which provided channels for the transport of small molecules and increased the contact area.Electrochemical measurements showed that both nanoporous PtFe and PtFeCu alloys exhibited excellent electrocatalytic activity and superior stability for the oxidation of methanol,ethanol,and formic acid comparing with Pt/C.

关 键 词：燃料电池 纳米多孔金属 去合金化 稳定性 

分 类 号：O643.36[理学—物理化学]