材料科学
金属有机骨架
热解
合金
化学工程
复合数
纳米颗粒
纳米技术
碳纤维
聚苯乙烯
复合材料
吸附
聚合物
有机化学
化学
工程类
作者
Song Lin Zhang,Buyuan Guan,Xiong Wen Lou
出处
期刊:Small
[Wiley]
日期:2019-02-12
卷期号:15 (13)
被引量:237
标识
DOI:10.1002/smll.201805324
摘要
Abstract Metal–organic framework (MOF) composites have recently been considered as promising precursors to derive advanced metal/carbon‐based materials for various energy‐related applications. Here, a dual‐MOF‐assisted pyrolysis approach is developed to synthesize Co–Fe alloy@N‐doped carbon hollow spheres. Novel core–shell architectures consisting of polystyrene cores and Co‐based MOF composite shells encapsulated with discrete Fe‐based MOF nanocrystallites are first synthesized, followed by a thermal treatment to prepare hollow composite materials composed of Co–Fe alloy nanoparticles homogeneously distributed in porous N‐doped carbon nanoshells. Benefitting from the unique structure and composition, the as‐derived Co–Fe alloy@N‐doped carbon hollow spheres exhibit enhanced electrocatalytic performance for oxygen reduction reaction. The present approach expands the toolbox for design and preparation of advanced MOF‐derived functional materials for diverse applications.
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