Enhancing Oxygen Evolution Reaction with Two-Dimensional Nickel Oxide on Au (111)

The nature of the active sites of transition metal oxides during the oxygen evolution reaction (OER) has attracted much attention. Herein, we constructed well-defined nickel oxide/Au (111) model catalysts to study the relationship between the structures and their OER activity using scanning tunnelin...

Full description

Saved in:
Bibliographic Details
Published inCatalysts Vol. 14; no. 5; p. 284
Main Authors Zhang, Handing, Zhang, Haoyu, Wang, Ruijing, Lv, Jiayu, Huang, Wugen, Guo, Chenyan, Yang, Fan
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.05.2024
Subjects
Analysis
Annealing
Density functional theory
electrochemistry
Gold
Islands
Metal catalysts
Molecular beam epitaxy
Morphology
Nickel
Nickel compounds
Nickel oxides
NiOx model catalysts
oxygen evolution reaction
Oxygen evolution reactions
Photoelectrons
Scanning tunneling microscopy
Spectrum analysis
Structure
Temperature
Transition metal oxides
X ray photoelectron spectroscopy
China
Online AccessGet full text

Cover

More Information
Summary:The nature of the active sites of transition metal oxides during the oxygen evolution reaction (OER) has attracted much attention. Herein, we constructed well-defined nickel oxide/Au (111) model catalysts to study the relationship between the structures and their OER activity using scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), electrochemical measurements, and density functional theory (DFT) calculations. The deposited nickel oxides on Au (111) were found to exhibit a two-dimensional (2D)/three-dimensional (3D) structure by regulating the annealing temperature. Combining STM, XPS and electrochemical measurements, our results demonstrated an optimal OER reactivity could be achieved for NiOx with a 2D structure on Au and provided a morphological description of the active phase during electrocatalysis.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal14050284