塔菲尔方程
过电位
化学
析氧
异质结
催化作用
双层
铱
化学工程
制作
金属有机骨架
纳米技术
电子转移
电化学
光电子学
电极
光化学
物理化学
材料科学
有机化学
病理
替代医学
吸附
工程类
医学
生物化学
膜
作者
Wei Liang,Cheng Wang,Jie Liu,Jiongting Yin,Zhengying Wu,Shujin Li,Yukou Du
标识
DOI:10.1021/acs.inorgchem.3c02852
摘要
The fabrication of hollow nanoelectrocatalysts with multilayered heterogeneous interfaces, derived from metal-organic framework (MOF) materials, represents a highly efficient strategy that promotes the oxygen evolution reaction (OER). Within this research, we successfully synthesized a hollow nanobox of Ir-doped ZIF-67@CoFe PBA with bilayer heterointerfaces. The distinctive structure of Ir-ZIF-67@CoFe PBA provides a substantial number of active sites for reaction intermediates, resulting in improved utilization of precious metals. Furthermore, experimental results indicate the outstanding electrocatalytic performance of the optimized Ir-ZIF-67@CoFe PBA, as indicated by a mere 269 mV overpotential at 10 mA·cm-2, accompanied by a small Tafel slope of 80.1 mV·dec-1. Moreover, the Schottky junction formed between the heterojunction and Ir within Ir-ZIF-67@CoFe PBA accelerates the electron-transfer rate, contributing to its exceptional catalytic performance compared to that of a catalyst derived solely from ZIF-67. This distinctive feature of the catalyst holds tremendous application value.
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