碳化
催化作用
热解
碳纤维
金属有机骨架
材料科学
吸附
惰性气体
介孔材料
化学工程
纳米技术
化学
有机化学
物理化学
复合材料
工程类
复合数
作者
Ming Wen,Nana Sun,Long Jiao,Shuang‐Quan Zang,Hai‐Long Jiang
标识
DOI:10.1002/ange.202318338
摘要
Abstract Carbon‐based single‐atom catalysts (SACs) have attracted tremendous interest in heterogeneous catalysis. However, the common electric heating techniques to produce carbon‐based SACs usually suffer from prolonged heating time and tedious operations. Herein, a general and facile microwave‐assisted rapid pyrolysis method is developed to afford carbon‐based SACs within 3 min without inert gas protection. The obtained carbon‐based SACs present high porosity and comparable carbonization degree to those obtained by electric heating techniques. Specifically, the single‐atom Ni implanted N‐doped carbon (Ni 1 −N−C) derived from a Ni‐doped metal–organic framework (Ni‐ZIF‐8) exhibits remarkable CO Faradaic efficiency (96 %) with a substantial CO partial current density (j CO ) up to 1.06 A/cm 2 in CO 2 electroreduction, far superior to the counterpart obtained by traditional pyrolysis with electric heating. Mechanism investigations reveal that the resulting Ni 1 −N−C presents abundant defective sites and mesoporous structure, greatly facilitating CO 2 adsorption and mass transfer. This work establishes a versatile approach to rapid and large‐scale synthesis of SACs as well as other carbon‐based materials for efficient catalysis.
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