Programmable Synthesis of Multimetallic Phosphide Nanorods Mediated by Core/Shell Structure Formation and Conversion
Programmable Synthesis of Multimetallic Phosphide Nanorods Mediated by Core/Shell Structure Formation and Conversion
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DOI：
10.1021/jacs.0c02584
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发表时间：
2020-05-06
影响因子：
15
通讯作者：
Zhang, Sen
中科院分区：
文献类型：
--
作者：
Zhang, Yulu;Li, Na;Zhang, Sen
具有明确物理尺寸和广泛化学组成的纳米结构的通用合成策略处于先进纳米材料设计、功能化和应用的前沿。在这里，我们报告了多金属磷化物CoMPx纳米棒（NR）的组成可编程合成，其中M可以控制为Fe，Ni，Mn，Cu及其二元组合。形成Co2 P/MPx核/壳NR并随后通过热后处理将其转化为CoMPx固溶体NR对于克服在具有不同M组成的CoMP（x）的常规合成中所面临的形态/结构不一致的障碍是必不可少的。所得到的CoMPx具有均匀的一维（1-D）结构，为我们提供了一个平台，明确筛选M协同效应，在提高电催化活性，如由析氧反应举例说明。这种以核/壳纳米结构的形成和转化为中介的新方法可以推广到其他多组分体系（金属合金、混合氧化物和硫族化物等）。适用于各种应用。
Generalized synthetic strategies for nanostructures with well-defined physical dimensions and broad-range chemical compositions are at the frontier of advanced nanomaterials design, functionalization, and application. Here, we report a composition-programmable synthesis of multimetallic phosphide CoMPx nanorods (NRs) wherein M can be controlled to be Fe, Ni, Mn, Cu, and their binary combinations. Forming Co2P/MPx core/shell NRs and subsequently converting them into CoMPx solid-solution NRs through thermal post-treatment are essential to overcome the obstacle of morphology/structure inconsistency faced in conventional synthesis of CoMP(x)with the different M compositions. The resultant CoMPx with uniform one-dimensional (1-D) structure provides us a platform to unambiguously screen the M synergistic effects in improving the electrocatalytic activity, as exemplified by the oxygen evolution reaction. This new approach mediated by core/shell nanostructure formation and conversion can be extended to other multicomponent nanocrystal systems (metal alloy, mixed oxide, and chalcogenide, etc.) for diverse applications.