Department of Energy and Chemical Engineering, Incheon National University , Incheon 22012, Republic of Korea.
Department of Applied Chemistry, Kyung Hee University , Yongin, Gyeonggi 17104, Republic of Korea.
ACS Appl Mater Interfaces. 2017 Aug 30;9(34):28758-28765. doi: 10.1021/acsami.7b08786. Epub 2017 Aug 15.
Active, stable electrocatalysts based on non-precious metals for the oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) are critical for the development of cost-effective, efficient renewable energy technologies. Here, Fe/FeC-embedded nitrogen-doped carbon was fabricated via pyrolysis of iron-porphyrin-encapsulated mesoporous metal-organic frameworks [PCN-333 (Fe), where "PCN" stands for "porous coordination network"] at 700 °C. The various characterization techniques confirmed that Fe- and FeC-containing Fe-N-C material (FeP-P333-700) was successfully prepared by pyrolysis of porphyrin-encapsulated PCN-333 (Fe). FeP-P333-700 exhibited superior electrocatalytic performance for the ORR and HER owing to the synergistic effect of Fe/FeC and Fe-N-C active sites.
基于非贵金属的活性、稳定的电催化剂对于开发具有成本效益、高效的可再生能源技术至关重要。在此，通过在 700°C 下热解包裹铁卟啉的介孔金属有机骨架[PCN-333(Fe)，其中“PCN”代表“多孔配位网络”]，制备了 Fe/FeC 嵌入的氮掺杂碳。各种表征技术证实，通过包裹卟啉的 PCN-333(Fe)的热解成功制备了含有 Fe 和 FeC 的 Fe-N-C 材料(FeP-P333-700)。由于 Fe/FeC 和 Fe-N-C 活性位点的协同作用，FeP-P333-700 对 ORR 和 HER 表现出优异的电催化性能。
