化学
钴
金属有机骨架
析氧
氧还原反应
兴奋剂
氢
氧气
电催化剂
金属
无机化学
电化学
有机化学
物理化学
电极
物理
光电子学
吸附
作者
Yunlong Wu,C. Jiao,Fengfeng Wang,Peng‐Fei Tang,Yang‐Tian Yan,Yanyan Song,C. L. Fu,Xinhai He,Guo‐Ping Yang,Yao‐Yu Wang
标识
DOI:10.1016/j.molstruc.2024.138945
摘要
In this study, two Co(II)-based metal-organic frameworks (MOFs) with one-dimensional chain structures: [Co(L1)(H2O)2]n (1) and [Co(HL2)2(H2O)2·2(H2O)]n (2) have been synthesized by using two distinct isomeric ligands [6-(pyridin-4′-yl) isophthalic acid (H2L1) and 6-(pyridin-3′-yl) isophthalic acid (H2L2)] and transition metal ions Co(II) via the solvothermal reaction. And further, a series of electrocatalysts containing Co nanoparticles attached on N-doped graphitized carbon materials (CoX@NC-T; X = 1, 2; T = 600 °C, 800 °C, 900 °C) were obtained via the pyrolysis of the of 1 and 2. The electrocatalytic performances show that the Co1@NC-600 °C material exhibited superior OER with the overpotential of 355.8 mV and the Tafel slope of 34.46 mV dec‑1, while the Co2@NC-800 °C outperformed in catalyzing the hydrogen evolution reaction (HER) with the overpotential 354.5 mV and the Tafel slope of 38.1 mV dec‑1, providing us with new synthesize procedure to obtain the electrocatalysts in water splitting.
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