纳米材料基催化剂
材料科学
三元运算
电催化剂
纳米线
催化作用
纳米技术
贵金属
合金
化学工程
纳米颗粒
制作
金属
电化学
化学
冶金
电极
有机化学
物理化学
工程类
病理
医学
程序设计语言
替代医学
计算机科学
作者
Hao Lv,Lizhi Sun,Dongdong Xu,Yanhang Ma,Ben Liu
标识
DOI:10.1016/j.apcatb.2019.04.066
摘要
Noble metal-phosphorus (NMP) alloys have received special attention in the electrocatalysis. Despite a few efforts, the fabrication of anisotropic multicomponent NMPs is largely unsuccessful. Here we develop a facile yet general surfactant-directed aqueous synthesis for one-dimensional (1D) ternary PdCuP alloy nanowires (NWs), and demonstrate their structural and compositional synergy in promoting catalytic performance towards ethanol electrooxidation. Anisotropic PdCuP NWs with an ultrathin diameter of 2.5 nm and ultralong length of hundreds of nanometers are synthesized via in-the-columnar epitaxial growth of crystalline alloys along columnar assemblies of amphiphilic dioctadecyldimethylammonium chloride (DODAC) by NaH2PO2 as the reducing agent and P source simultaneously. This protocol is also synthetically universal, enables the controllability in tuning the P contents and elemental compositions of multicomponent NMP NWs (for example, binary PdP, ternary PdAgP and PdPtP NWs). With synergistically structural and compositional merits, ultrathin PdCuP NWs display dramatically enhanced ethanol electrooxidation performance with a superior mass activity of 6.7 A mgPd−1, which is 9.4 fold higher than commercial Pd nanoparticle catalyst and also surpasses previously reported nanocatalysts. This approach will provide a new access for rational design of anisotropic non-metal-alloyed multicomponent noble metal-based nanocatalysts with desirable functions and synergies for a wide range of (electro)catalytic applications.
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