ZIF-67衍生物微纳米花状Co3O4催化剂的制备及其OER催化性能研究
Preparation of ZIF-67 Derivative Micro-Nano Flower-Like Co3O4 Catalyst and Its OER Catalytic Performance
DOI: 10.12677/HJCET.2020.102016, PDF,  被引量    国家自然科学基金支持
作者: 任顺政, 冯丽娟, 姚 硕*：中国海洋大学化学化工学院，山东 青岛
关键词: 电催化剂；金属有机骨架；四氧化三钴；析氧反应；ZIF-67；Electrocatalysts； MOFs； Co3O4； Oxygen Evolution Reaction； ZIF-67
摘要: 以ZIF-67为前驱体，基于离子辅助溶剂热条件下实现ZIF-67的形态演变得到微纳米花状ZIF-67(f)，然后采用热处理的方法，在空气气氛下，制备了微纳米花状Co3O4(f)催化剂材料。采用电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射仪(XRD)、傅里叶红外光谱仪(FT-IR)、气体吸附仪(BET)对材料的形貌和结构进行了表征。采用电化学工作站对材料的电化学性能进行了测试，探讨了不同温度下制备的催化剂的析氧反应(OER)性能。结果表明，所制备的花状Co3O4(f)的电催化性能较商业Co3O4和Co3O4(r)有大幅度提高。在450℃下煅烧制备的微纳米花状Co3O4(f)材料具有最为优异的电催化性能，其在电流密度为10 mA∙cm−2时的过电位为390 mV，Tafel斜率为60 mV∙dec−1。
Abstract: Using ZIF-67 as a precursor, micro-nano flower-like ZIF-67(f) was obtained based on the mor-phological evolution of ZIF-67 based on ion-assisted solvothermal conditions, and micro-nano flowers-like Co3O4(f) was prepared in an air atmosphere by heat treatment. Electron micro-scope (SEM), transmission electron microscope (TEM), X-ray diffractometer (XRD), Fourier in-frared spectrometer (FT-IR), and gas adsorption instrument (BET) were used to characterize the morphology and structure of the material. The electrochemical performance of the material was tested using an electrochemical workstation, and the oxygen evolution reaction (OER) per-formance of the catalyst prepared at different temperatures was discussed. The results show that the electrocatalytic performance of the prepared flower-like Co3O4(f) is greatly improved compared with commercial Co3O4 and Co3O4(r). The micro-nano flower-like Co3O4(f) material prepared by calcination at 450˚C has the most excellent electrocatalytic performance. Its over-potential at a current density of 10 mA∙cm−2 is 390 mV, and the Tafel slope is 60 mV∙dec−1.
文章引用：任顺政, 冯丽娟, 姚硕. ZIF-67衍生物微纳米花状Co3O4催化剂的制备及其OER催化性能研究[J]. 化学工程与技术, 2020, 10(2): 111-118. https://doi.org/10.12677/HJCET.2020.102016

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