Metal–Organic Framework Hybrid‐Assisted Formation of Co3O4/Co‐Fe Oxide Double‐Shelled Nanoboxes for Enhanced Oxygen Evolution |
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| Authors: | Xiao Wang Le Yu Bu Yuan Guan Shuyan Song Xiong Wen Lou |
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| Affiliation: | 1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore;2. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P. R. China |
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| Abstract: | Rational design of complex metal–organic framework (MOF) hybrid precursors offers a great opportunity to construct various functional nanostructures. Here, a novel MOF‐hybrid‐assisted strategy to synthesize Co3O4/Co‐Fe oxide double‐shelled nanoboxes is reported. In the first step, zeolitic imidazolate framework‐67 (ZIF‐67, a Co‐based MOF)/Co‐Fe Prussian blue analogue (PBA) yolk–shell nanocubes are formed via a facile anion‐exchange reaction between ZIF‐67 nanocube precursors and Fe(CN)6]3? ions at room temperature. Subsequently, an annealing treatment is applied to prepare Co3O4/Co‐Fe oxide double‐shelled nanoboxes. Owing to the structural and compositional benefits, the as‐derived Co3O4/Co‐Fe oxide double‐shelled nanoboxes exhibit enhanced electrocatalytic performance for oxygen evolution reaction in alkaline solution. |
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| Keywords: | anion‐exchange reactions double‐shelled electrocatalysis hollow structures MOFs |
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