Two-dimensional (2D) nanomaterials with unique anisotropy and electronic properties
are deemed as an ideal platform for establishing clear relationships between structure and catalytic
reactivity. Knowledge of their structures is essential for understanding the catalytic behavior, which
further facilitates the development of high-performance catalysts. In this review, we focus on the
recent progress of synchrotron radiation X-ray absorption spectrum (XAS) techniques in exploring
the structure-function relationship of two-dimensional electrocatalysts. Also, we summarize the application
of XAS technique in disclosing key factors that affect the catalytic activity, including identification
of local atomic structure, electronic structure and defect structure. Through the characterization
of the catalytic process with XAS technique, we further highlight the atomic-level correlation
between structure and function in the field of oxygen evolution, oxygen reduction, hydrogen evolution
and CO2 reduction. Finally, we propose the major challenges and prospects of XAS technique
in advancing the development of two-dimensional electrocatalysts. We anticipate that this review provides
critical insights into the application of the XAS technique in electrocatalysis, thereby promoting
the development of advanced characterization techniques and the design of high-active catalysts.
Mimicking the Catalytic Center for the Water-Splitting Reaction in Photosystem II
