具有枝状形貌的PdPt双金属纳米颗粒的甲醇氧化活性增强研究(英文)

被引:8
作者
张媛
张金凤
陈泽霖
刘赟威
张萌萌
韩晓鹏
钟澄
胡文彬
邓意达
机构
[1] TianjinKeyLaboratoryofCompositeandFunctionalMaterials,SchoolofMaterialsScienceandEngineering,TianjinUniversity
关键词
one-pot approach; bayberry tannin; dendritic nanoparticles; controllable composition; methanol oxidation electro-catalysis;
D O I
暂无
中图分类号
O643.36 [催化剂]; TB383.1 [];
学科分类号
摘要
本文利用一步法制备了具有小粒径、组成可控和高催化活性的高度分散的枝状PdPt双金属纳米颗粒.PdPt双金属纳米颗粒通过单宁酸(BT)作为还原剂和表面活性剂得到,起到了简化工艺的作用.此外,具有不同Pd/Pt原子比的PdPt双金属纳米颗粒可以通过改变Pd和Pt前躯体的量来获得.与其他成分PdPt纳米颗粒(Pd82Pt18,Pd69Pt31,Pd36Pt64)和商业Pt/C(20 wt.%)催化剂相比,Pd52Pt48催化剂具有最高的甲醇氧化电催化活性,这归因于其独特的树枝状结构以及Pd和Pt之间的协同效应.该研究具有易于制备和高催化性能的优点,在电化学能量转换高性能催化剂方面具有巨大的应用前景.
引用
收藏
页码:697 / 706
页数:10
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