纳米片
材料科学
异质结
纳米材料
过渡金属
纳米技术
普鲁士蓝
纳米结构
密度泛函理论
多面体
制作
化学工程
催化作用
电化学
物理化学
化学
光电子学
几何学
电极
计算化学
医学
生物化学
替代医学
病理
工程类
数学
作者
Jinghui Shi,Wei Peng,Yifei Yang,Bo Li,Jianhang Nie,Hui Wan,Yao Li,Gui‐Fang Huang,Wangyu Hu,Wei‐Qing Huang
出处
期刊:Small
[Wiley]
日期:2023-05-14
卷期号:19 (30)
被引量:23
标识
DOI:10.1002/smll.202302906
摘要
The hollow sandwich core-shell micro-nanomaterials are widely used in materials, chemistry, and medicine, but their fabrication, particularly for transition metal phosphides (TMPs), remains a great challenge. Herein, a general synthesis strategy is presented for binary TMPs hollow sandwich heterostructures with vertically interconnected nanosheets on the inside and outside surfaces of polyhedron FeCoPx /C, demonstrated by a variety of transition metals (including Co, Fe, Cd, Mn, Cu, Cr, and Ni). Density functional theory (DFT) calculation reveals the process and universal mechanism of layered double hydroxide (LDH) growth on Prussian blue analog (PBA) surface in detail for the first time, which provides the theoretical foundations for feasibility and rationality of the synthesis strategy. This unique structure exhibits a vertical nanosheet-shell-vertical nanosheet configuration combining the advantages of sandwich, hollow and vertical heterostructures, effectively achieving their synergistic effect. As a proof-of-concept of their applications, the CoNiPx @FeCoPx /C@CoNiPx hollow sandwich polyhedron architectures (representative samples) show excellent catalytic performance for the oxygen evolution reaction (OER) in alkaline electrolytes. This work provides a general method for constructing hollow-sandwich micro-nanostructures, which provides more ideas and directions for design of micro-nano materials with special geometric topology.
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