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- W3215733125 abstract "Microbial fuel cell (MFC) satisfies the needs of power generation and pollutants removal but still requires active electrocatalysts to accelerate cathodic oxygen reduction reaction (ORR). Metal-nitrogen-carbon materials (M − NCs) derived from Prussian blue analogues (PBAs), known for low cost and high yield, fail with satisfactory surface structure and their intrinsic activity requires to be further improved. Here, a [email protected] precursor ([email protected] PBA-1, MOF: metal-Organic framework) is skillfully fabricated by utilizing two-dimensional (2D) leaf-like cobalt-based zeolitic-imidazolate framework (Co-ZIF-L) as the mother MOF to give birth to cobalt iron Prussian blue analogue (CoFe PBA) by adjusting reaction time and solvents with a ligand exchange method. After carbonization, [email protected] PBA-1 transforms into a leaf-shaped carbon nanoplate with heterostructured CoFe alloy and Co (Co0.7Fe0.3@Co-NC-1), which exhibits outstanding ORR activity and high MFC performance (2486 ± 56 mW m-2) compared with Co-NC and Co0.7Fe0.3-NC derived from Co-ZIF-L and leaf-like CoFe PBA, respectively. The interfacial Co0.7Fe0.3@Co efficiently optimizes electronic structure for fast electrons transfer and the porous carbon matrix provides desirable surface structure for oxygen transfer, synergistically triggering a high ORR activity. Our work offers new insights for controllable preparation of PBAs-based dual-MOFs precursors and provides a feasible avenue for enhancing the activity of PBAs-based M − NCs catalysts." @default.
- W3215733125 created "2021-12-06" @default.
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- W3215733125 date "2022-02-01" @default.
- W3215733125 modified "2023-10-11" @default.
- W3215733125 title "Engineering heterostructured Co0.7Fe0.3@Co doped leaf-like carbon nanoplates from dual metal-organic frameworks for high-efficiency oxygen reduction reaction in microbial fuel cell" @default.
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- W3215733125 doi "https://doi.org/10.1016/j.jpowsour.2021.230799" @default.
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