析氧
催化作用
无定形固体
双金属片
材料科学
合理设计
吸附
化学工程
金属有机骨架
纳米技术
化学物理
金属
物理化学
化学
结晶学
有机化学
电化学
冶金
工程类
电极
作者
Jian Zhou,Fei Qiao,Zhichu Ren,Xianbiao Hou,Zongkun Chen,Shuixing Dai,Ge Su,Zhengwen Cao,Heqing Jiang,Minghua Huang
标识
DOI:10.1002/adfm.202304380
摘要
Abstract Amorphous metal‐organic frameworks (MOFs) with aperiodic atomic arrangements, featuring high intrinsic activity and rich active sites, have emerged as promising oxygen evolution reaction (OER) catalysts. However, the quantitative structure‐activity relationships (SARs) that determine the OER activity, the key to a rational catalyst design, remain unresolved. Inspired by controllable amorphization engineering, the amorphous MOF structures are rationally constructed as an ideal platform to explore the SAR in catalyzing OER. The mechanistic studies show that the OER activity could be volcano‐shape correlated with either constant adsorption energy difference between OOH* and O* (Δ G OOH* − Δ G O* ) or the position of the d band center. The amorphous MOF (Ni 8 Co 2 ‐BDC), situated close to the volcano summit, possesses an appropriate E d energy level, which exhibits the balanced intermediates adsorption/desorption ability and consequently results in the boosted catalytic activity and long‐term stability. This work supplies new perspectives to investigate the SAR in amorphous MOF structures, thereby guiding the rational design of advanced OER catalysts.
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