CoFeO 修饰的 ZIF-8 复合材料的电化学氧气进化的绿色合成。
A Green Synthesis of CoFeO Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution.
机构信息
Department of Mechanical Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of Korea.
出版信息
Int J Mol Sci. 2023 May 31;24(11):9585. doi: 10.3390/ijms24119585.
Low-cost, sustainable hydrogen production requires noble metal-free electrocatalysts for water splitting. In this study, we prepared zeolitic imidazolate frameworks (ZIF) decorated with CoFeO spinel nanoparticles as active catalysts for oxygen evolution reaction (OER). The CoFeO nanoparticles were synthesized by converting agricultural bio-waste (potato peel extract) into economically valuable electrode materials. The biogenic CoFeO composite showed an overpotential of 370 mV at a current density of 10 mA cm and a low Tafel slope of 283 mV dec, whereas the ZIF@CoFeO composite prepared using an in situ hydrothermal method showed an overpotential of 105 mV at 10 mA cm and a low Tafel slope of 43 mV dec in a 1 M KOH medium. The results demonstrated an exciting prospect of high-performance noble metal-free electrocatalysts for low-cost, high-efficiency, and sustainable hydrogen production.
低成本、可持续的氢气生产需要用于水分解的无贵金属电催化剂。在这项研究中，我们制备了沸石咪唑骨架（ZIF）负载 CoFeO 尖晶石纳米粒子作为用于析氧反应（OER）的活性催化剂。CoFeO 纳米粒子是通过将农业生物废料（土豆皮提取物）转化为具有经济价值的电极材料来合成的。生物源 CoFeO 复合材料在电流密度为 10 mA cm 时表现出 370 mV 的过电势和 283 mV dec 的低塔菲尔斜率，而使用原位水热法制备的 ZIF@CoFeO 复合材料在 1 M KOH 介质中在 10 mA cm 时表现出 105 mV 的过电势和 43 mV dec 的低塔菲尔斜率。结果表明，用于低成本、高效率和可持续制氢的高性能无贵金属电催化剂具有令人兴奋的前景。
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