We report rational design and syntheses of ternary noble metal-metalloid-nonmetal alloy nanowires (NWs) as a novel electrocatalyst for electrochemical ethanol oxidation reaction (EOR). This novel electrocatalyst is formed in an aqueous solution via anisotropic nucleation and growth of ternary PdBP alloy NWs along assembled cylinder template of Plurolic F127 on a nitrogen-functionalized graphene support (denoted as PdBP NWs@N-G). We find that uniformly alloying B and P intrinsically modulates the electronic states of Pd catalyst and also introduces new functions into the catalyst, while NW structure supported on the N-G exposes more electrocatalytic active sites and accelerates electron/mass transfers. Such add-in synergies of PdBP NWs@N-G kinetically facilitate the removal and/or further oxidation of CO-based poisoning intermediates, thus remarkably enhancing the electrocatalytic EOR performance. They exhibit a high mass activity of 4.15 A mg_Pd⁻¹ and superior cycling and chronoamperometric stability for electrocatalytic EOR, much better than previously reported monometallic Pd-based nanocatalysts. More interestingly, this design strategy can be easily extended to develop more sophisticated NWs catalysts with more compositions (for example quaternary PdCuBP NWs@N-G) that further tunes the electronic and bifuntional effects for various desired catalysis and electrocatalysis.

我们报告了三元贵金属-类金属-非金属合金纳米线 (NWs) 的合理设计和合成，作为电化学乙醇氧化反应 (EOR) 的新型电催化剂。这种新型电催化剂是在水溶液中通过三元 PdBP 合金 NW 的各向异性成核和沿着 Plurolic F127 的组装圆柱模板在氮功能化石墨烯载体（表示为 PdBP NWs@NG）上生长而形成的。我们发现均匀合金化的 B 和 P 从本质上调节了 Pd 催化剂的电子状态，并为催化剂引入了新的功能，而负载在 NG 上的 NW 结构暴露了更多的电催化活性位点并加速了电子/质量转移。PdBP NWs@NG 的这种附加协同作用在动力学上促进了基于 CO 的中毒中间体的去除和/或进一步氧化，从而显着提高电催化 EOR 性能。它们表现出 4.15 A mg 的高质量活性_Pd ^-1和电催化 EOR 的优异循环和计时安培稳定性，比之前报道的单金属 Pd 基纳米催化剂好得多。更有趣的是，这种设计策略可以很容易地扩展到开发具有更多成分的更复杂的 NWs 催化剂（例如四元 PdCuBP NWs@NG），进一步调整各种所需催化和电催化的电子和双功能效应。